| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 343781000 | With external reflector or director | 38 |
| 20080204342 | Reflector Antenna - A reflector antenna includes a feed configured to always point during operation in a direction that opposes ingress of water into the feed, and a reflector having a truncated spherical reflecting surface, wherein a relative orientation of the reflector and the feed is adjustable. Another reflector antenna includes a feed configured to always point during operation in a direction that opposes ingress of water into the feed, and a reflector spaced apart from the feed by a focal length at least as great as a diameter of the reflector. Another reflector antenna includes a feed and a reflector having a truncated spherical reflecting surface, wherein the reflector is spaced apart from the feed by a focal length at least as great as a diameter of the reflector. | 08-28-2008 |
| 20080231533 | Flat-aperture waveguide sidewall-emitting twist-reflector antenna - A flat aperture waveguide sidewall-emitting twist-reflector (FAWSET) antenna, having an E-plane sectoral flare having a depth merely the H-plane width of the waveguide. Extending the E-plane sectoral flare is a twist-reflector tilted from one sidewall of the E-plane flare and a trans-reflector extending from another opposing sidewall of the E-plane flare. An angle between distal end of the twist-reflector and the trans-reflector is a function of the frequency of the incoming wave. | 09-25-2008 |
| 20100194656 | LEAKY WAVE ANTENNA USING WAVES PROPAGATING BETWEEN PARALLEL SURFACES - A leaky wave antenna has electrically conductive surfaces in parallel to each other. At one place a two-dimensional array of slots is provided in one of the surfaces. Elsewhere a feed structure is realized comprising one or more electrically conductive elements coupled between the first and second electrically conductive surface and configured to direct an electromagnetic wave pattern travelling between surfaces towards the array. In an embodiment the feed structure comprises a waveguide formed between walls connecting the surfaces. One of the walls is made to leak in order to feed the array of slots. In an embodiment the feed structure comprises a reflector comprising connections between the surfaces, to direct waves between the surfaces to the array of slots. | 08-05-2010 |
| 20110140980 | BEAM CONTROLLER FOR APERTURE ANTENNA, AND APERTURE ANTENNA THEREWITH - The present invention relates to an aperture antenna capable of controlling a shape of a radiated beam without changing a structure of an aperture antenna by connecting a beam controller with a single aperture antenna. The aperture antenna including a beam controller according to the present invention includes: a waveguide; an aperture horn of which one end is connected to the waveguide and the other end is provided with an opening; and a beam controller including a feeding unit connected to the opening and provided with a plurality of slits, a dielectric layer connected to the feeding unit, and a plurality of patches connected to the dielectric layer to control a beam shape of a signal introduced into the feeding unit and radiated through the patches. | 06-16-2011 |
| 20120098723 | ANTENNA DEVICE - An antenna device including: a reflector antenna including a primary radiator, a feed waveguide for feeding radio waves to the primary radiator, and a reflector; and a radome that covers the reflector antenna, in which the antenna device further includes a sidelobe reduction member attached to a vicinity of the primary radiator or the feed waveguide, the sidelobe reduction member reducing a sidelobe in a specific direction of an antenna by at least one of scattering and absorbing of radio waves reflected by the radome out of the radio waves radiated from the reflector antenna. Therefore, it is possible to reduce a sidelobe deterioration caused by reflection waves from the radome. | 04-26-2012 |
| 20130027262 | WIRELESS COMMUNICATION SYSTEM - A wireless communication system, comprises a tower-shaped antenna includes a leaky coaxial cable that leaks a radio wave and a reflective member that reflect the radio wave leaked from the leaky coaxial cable in the direction perpendicular to an axial direction of the leaky coaxial cable. | 01-31-2013 |
| 20130307741 | WIDE BEAM ANTENNA - A wide beam radio frequency (RF) antenna includes a waveguide and one or more electrically conductive protrusions. The waveguide has at least one electrically conductive interior wall surface, a boresight defined by a longitudinal axis, and an aperture plane, transverse to the longitudinal axis, disposed at a distal end of the waveguide. A first proximal portion of each protrusion is electrically coupled to the electrically conductive interior wall surface, a distal portion of the protrusion being outside the aperture plane. | 11-21-2013 |
| 20130342412 | ANTENNA FEEDHORN WITH ONE-PIECE FEEDCAP - An antenna for use with electromagnetic waves includes a waveguide body having an open end and first threads and a cap having second threads which interface with the first threads to press the cap against the open end. The cap includes a cover which covers the open end when the cap is screwed onto the open end using the first and second threads while allowing the electromagnetic waves to pass through the cover. The antenna can be a horn antenna, and can also be a feedhorn antenna used with a reflector in a reflector antenna. | 12-26-2013 |
| 20140176379 | SATELLITE ANTENNA AND WAVEGUIDE FILTER THEREOF - A waveguide filter is provided. The waveguide filter includes a pipe and a first rib structure. The pipe includes a first inner wall. The first rib structure includes a first rib. The first rib is disposed in the pipe and formed on the first inner wall. The first rib includes a first section and a second section, wherein the first section and the second section extend on a first straight line and are perpendicular to the first inner wall, and a first gap is formed between the first section and the second section, and a first gap distance of the first gap is between 0.1 to 1.2 mm. | 06-26-2014 |
| 20160020523 | Foldable Radio Wave Antenna - A foldable radio wave antenna includes a foldable parabolic reflector member formed a foldable tension member attachable to the peripheral rim of the reflector member. | 01-21-2016 |
| 20160036134 | Foldable Radio Wave Antenna Deployment Apparatus for a Satellite - The present disclosure describes an antenna that has a parabola-shaped, flexible reflector member and one or more radial ribs embedded in the flexible reflector member and arranged to bias the reflector member in an open state. | 02-04-2016 |
| 20160087346 | ANTENNA ASSEMBLY FOR LONG-RANGE HIGH-SPEED WIRELESS COMMUNICATIONS - Various embodiments of antenna assemblies are disclosed herein. In one embodiment, the antenna assembly includes a reflector comprising a center opening, a feed-antenna subassembly situated in front of the reflector, a rear housing situated behind the reflector, and a pole-mounting bracket comprising a base plate situated between the reflector and the rear housing. The feed-antenna subassembly comprises a feed tube that houses at least one of: a transmitter circuit and a receiver circuit. The rear housing is coupled to a front side of the reflector via the center opening. The rear housing comprises a center cavity, and a back end of the feed tube is inserted in and coupled to the center cavity. The base plate is coupled to the reflector and the rear housing in such a way that decoupling between the base plate and the reflector requires a prior decoupling between the feed-antenna subassembly and the rear housing and a prior decoupling between the rear housing and the reflector. | 03-24-2016 |
| 20160104929 | ANTENNA WAVEGUIDE QUICK CONNECT COUPLER - A quick connect coupler assembly for connecting a first waveguide portion to a second waveguide portion is provided. The coupler assembly includes: a first coupler component affixed to the first waveguide portion and a second coupler component affixed to the second waveguide portion. The first coupler component has a plurality of perturbations, while the second coupler component has a plurality of slots and a radially disposed guide or channel. The perturbations align with and pass through the slots into the guide or channel such that the perturbations rotatably move about the guide or channel in a radial direction from an unlocked to a locked position. | 04-14-2016 |
| 20080204341 | BEAM WAVEGUIDE INCLUDING MIZUGUCHI CONDITION REFLECTOR SETS - A beam waveguide may include a first set of dual offset reflectors and a second set of dual offset reflectors. The first set of dual offset reflectors and the second set of dual offset reflectors may each include reflector geometries to produce a radiation pattern that is symmetric about a first axis between the first and second set of dual offset reflectors and to produce an axi-symmetric beam from the second set of dual offset reflectors that is unaffected by any rotation of the first and second set of dual offset reflectors relative to one another about the first axis. | 08-28-2008 |
| 20120287007 | Method and Apparatus for Reflector Antenna with Vertex Region Scatter Compensation - A method and apparatus for enhancing the electrical performance of a reflector antenna. A boom disc mounted upon a feed waveguide supporting a subreflector is dimensioned and positioned for reflection cancellation against the reflected components from the reflector vertex region in the direction of edge illumination half angle T. A dielectric sleeve or RF absorbing material may be placed between the vertex region and the boom disc. | 11-15-2012 |
| 20120306712 | RADIOWAVE ABSORBER AND PARABOLIC ANTENNA - A radiowave absorber of the present invention includes: an upper plate that includes a dielectric material containing conductive particles; a lower plate that is arranged parallel to the upper plate, and includes a dielectric material that contains conductive particles; and a plate-shaped support portion that is arranged between the upper plate and the lower plate, and supports the upper plate and the lower plate. | 12-06-2012 |
| 20130057445 | LOW SIDELOBE REFLECTOR ANTENNA - A front feed reflector antenna with a dish reflector has a reflector focal length to reflector diameter ratio of less than 0.25. A wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block is coupled to a distal end of the waveguide and a sub-reflector is coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. The sub-reflector diameter is dimensioned to be 2.5 wavelengths or more of a desired operating frequency. | 03-07-2013 |
| 20140253402 | Enclosure for Radio, Parabolic Dish Antenna, and Side Lobe Shields - Enclosures for radios, parabolic dish antennas, and side lobe shields are provided herein. A dish antenna includes a parabolic circular reflector bounded by a side lobe shield that extends along a longitudinal axis of the dish antenna in a forward direction forming a front cavity, and a sidewall that extends along the longitudinal axis of the dish antenna in a rearward direction forming a rear cavity. | 09-11-2014 |
| 20090021442 | Self-Supporting Unitary Feed Assembly - A feed assembly for a reflector antenna having a unitary portion of dielectric material, a proximal end of the unitary portion configured for connection with the reflector antenna. The unitary portion having a waveguide portion extending between the proximal end and a sub reflector support having a sub reflector surface at a distal end. The waveguide portion and the sub reflector surface covered with an RF reflective material. The unitary portion may be cost effectively formed via, for example injection molding and or machining. Alternatively, the feed assembly may be formed as a horn feed, without a sub reflector. | 01-22-2009 |
| 20090027289 | BACKFIRE ANTENNA WITH UPWARDLY ORIENTED DIPOLE ASSEMBLY - In one embodiment, a backfire antenna comprises a cup-shaped member defining an outer aperture and an interior cavity, a splash-plate disposed within a plane, and a dipole assembly comprising first and second arms. The first and second arms are both oriented non-parallel to the splash-plate towards the plane. | 01-29-2009 |
| 20100085265 | ARRAY FOR INFLUENCING THE RADIATION CHARACTERISTICS OF A REFLECTOR ANTENNA, PARTICULARLY A CENTRALLY FOCUSED REFLECTOR ANTENNA - The invention relates to an array for influencing the radiation characteristics of a reflector antenna, particularly a centrally focused reflector antenna ( | 04-08-2010 |
| 20110241956 | CASSEGRAIN ANTENNA FOR HIGH GAIN - Provided is a high gain Cassegrain antenna. The antenna includes a feed unit that radiates radio waves, a subreflector that faces a radiation surface of the feed unit and reflects the radiated radio waves, and a main reflector that has a plurality of hole scatterers of different depths facing the subreflector and reflecting again the radio waves reflected from the subreflector. Accordingly, it is possible to manufacture a high-gain broadband antenna at low costs. | 10-06-2011 |
| 20120056793 | REFLECTOR AND PARABOLIC ANTENNA USING THE SAME - A reflector includes a reflective body | 03-08-2012 |
| 20130057444 | CONTROLLED ILLUMINATION DIELECTRIC CONE RADIATOR FOR REFLECTOR ANTENNA - A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface. | 03-07-2013 |
| 20130162492 | ANTENNA PROVIDED WITH FALL-OUT PREVENTING ARRANGEMENT - Provided is an antenna, including: a dielectric support portion mounted to a tip of a waveguide; and a reflector bonded and fixed to the dielectric support portion. The dielectric support portion includes: an accommodating portion accommodating the reflector therein; and a fall-off preventing arrangement preventing the reflector from falling off under a state in which the reflector is accommodated in the accommodating portion. | 06-27-2013 |
| 20130300621 | LOW SIDELOBE REFLECTOR ANTENNA WITH SHIELD - A front feed reflector antenna with a dish reflector has a wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block may be coupled to a distal end of the waveguide and a sub-reflector coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. A subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is | 11-14-2013 |
| 20140139386 | High Efficiency Agile Polarization Diversity Compact Miniaturized Multi-Frequency Band Antenna System With Integrated Distributed Transceivers - A compact, agile polarization diversity, multiband antenna with integrated electronics for satellite communications antenna systems is disclosed. The antenna includes a feed assembly having integrated microwave electronics that are mechanically and electromagnetically coupled thereto in a distributed arrangement so that diverse polarization senses having a low axial ratio and electronic switching control is provided. The microwave electronics include a distributed transmitter that can include high-band and low-band transceivers. The high-band and low-band transceivers can include high-band and low-band transmitter and receiver pairs, respectively. The antenna presented enables the mechanical rotation of the orientation of the high-band transceiver for skew alignment while the low-band transceiver remains stationary relative to the antenna assembly. The low-band transmitter and receiver pair can include planar interfaces electromagnetically coupled to the feed assembly between a main reflector and subreflector via OMTs. The highly compact antenna system presented offers polarization performance previously achievable by only larger devices. | 05-22-2014 |
| 20140247191 | COMPACT LOW SIDELOBE ANTENNA AND FEED NETWORK - An antenna may include a primary reflector having a ring focus; a feed body along an axis of the primary reflector, the feed body including a circular waveguide coaxial with the axis of the primary reflector; a sub-reflector disposed facing an end of the circular waveguide; and a generally cylindrical stem extending from a center of the sub-reflector into the circular waveguide to form a section of annular waveguide. A sub-reflector support may mechanically connect a perimeter of the sub-reflector and an outside surface of the feed body. The sub-reflector, the stem, and the feed body may be collectively configured to couple microwave energy between the annular waveguide and the primary reflector. | 09-04-2014 |
| 20140292605 | REFLECTOR ANTENNA INCLUDING DUAL BAND SPLASHPLATE SUPPORT - A reflector antenna includes a dual-band waveguide feed and a splashplate support arranged to define a space between the waveguide feed aperture and the splashplate. The dual-band waveguide feed is configured to receive an input signal in a first transmission mode, to convert a transmission mode of an upper frequency band from a first transmission mode to a mixed transmission mode including the first transmission mode and a second transmission mode. The supporting portion can be spaced apart from the aperture of the waveguide feed, and may have a thickness corresponding to half a wavelength of a beam emitted from the aperture. | 10-02-2014 |
| 20150042527 | Sub-Reflector Assembly With Extended Dielectric Radiator - In one embodiment, a sub-reflector assembly for a reflector antenna has (i) a waveguide transition at a waveguide end of the sub-reflector assembly and configured to fit within a waveguide, (ii) a dielectric radiator connected to the waveguide transition and extending both laterally and back towards the waveguide end of the sub-reflector assembly, and (iii) a sub-reflector connected to the dielectric radiator. By configuring the dielectric radiator to extend both laterally and back towards the dielectric end of the assembly, radiated energy from the waveguide is directed such that the sub-reflector assembly can be used with shallow reflector dishes (e.g., F/D ratio greater than 0.25) and still achieve sufficiently high directivity. | 02-12-2015 |
| 20150061956 | ANTENNA - A compact antenna that includes a power feeding waveguide, a sub reflection mirror, and a main reflection mirror. Radio waves comprised of a vertical polarized wave and a horizontal polarized wave are transmitted to the power feeding waveguide. The sub reflection mirror is disposed to face an opening of the power feeding waveguide and reflects the radio wave radiated from the opening. The main reflection mirror is disposed to face the sub reflection mirror and outwardly radiates the radio wave reflected by the sub reflection mirror. A front surface of the main reflection mirror has a shape formed by rotating a line reaching one side and the other side of a predetermined parabola curve at least once, around a rotational axis. A front surface of the sub reflection mirror has a shape formed by rotating either one of a stepped line and a wavy line around the rotational axis. | 03-05-2015 |
| 20150084821 | ANTENNA FOR MULTIPLE FREQUENCY BANDS - An exemplary embodiment of an antenna in accordance with the present invention utilizes a sub-reflector and a main reflector with each of them having its own focal-ring type geometry. The antenna cooperates with a signal transmission feed disposed at the center of the antenna axis between the first and main reflectors to emit radio signals towards the sub-reflector. The sub-reflector reflects radio waves towards a main reflector which in turn reflects the radio waves to form the beam pattern emitted by the antenna. The reflecting surface of the sub-reflector is formed by a portion of an axially-displaced ellipse rotated about the antenna axis. The reflecting surface of the main reflector is defined by a section of a parabola rotated about the antenna axis to form a reflecting surface that concavely slopes away from the antenna axis. An embodiment of the antenna provides a wide coverage conical beam with selectable beam peaks that operate over a 2.25:1 frequency band range and provides substantially iso-flux beam density. | 03-26-2015 |
| 20150091768 | RING FOCUS ANTENNA - An antenna includes a main reflector with a focal circle about an axis. A waveguide horn extends from the main reflector along this axis. A sub-reflector is mounted beyond the distal end of the waveguide horn with an annular gap remaining between the sub-reflector and the distal end of the waveguide horn. The annular gap forms a radial transmission line between a first wall on the sub-reflector and a second wall having outer annular corrugated surfaces on the distal end of the waveguide horn. The first wall of the transmission line is a body of revolution of elliptical shape on the sub-reflector. This ellipse is tilted at an angle with respect to the axis, and has a first focal point on the axis. The other focal point is preferably on or near the focal circle. The phase center of the waveguide horn does not coincide with either foci. | 04-02-2015 |
| 20150091769 | DISH ANTENNA HAVING A SELF-SUPPORTING SUB-REFLECTOR ASSEMBLY - An antenna has a waveguide horn extending from a main reflector. A dielectric tube extends from the distal end of the waveguide horn to support a sub-reflector in the focal region of the main reflector. An insert is placed into the dielectric tube to seat against the distal end of the dielectric tube. A fastener secures the insert to the sub-reflector, thereby securing the sub-reflector to the distal end of the dielectric tube. The surface of the insert serves as a continuation of the sub-reflector. The dielectric tube can be equipped with an inwardly-extending collar about its distal end to engage the insert. | 04-02-2015 |
| 20150138029 | CASSEGRAIN-TYPE METAMATERIAL ANTENNA - A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector. | 05-21-2015 |
| 20150357719 | ANTENNA DEVICE - An antenna device capable of performing precise positioning by using a small number of components and having a low side-lobe characteristic is provided. An antenna device includes a primary radiator ( | 12-10-2015 |
| 20160043474 | CONTROLLED ILLUMINATION DIELECTRIC CONE RADIATOR FOR REFLECTOR ANTENNA - A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface. | 02-11-2016 |
| 20160126638 | METHOD FOR DISH REFLECTOR ILLUMINATION VIA SUB-REFLECTOR ASSEMBLY WITH DIELECTRIC RADIATOR PORTION - A method for illuminating a dish reflector of a reflector antenna, including providing a waveguide coupled to a vertex of a dish reflector at a proximal end, a sub-reflector supported by a dielectric block coupled to a distal end of the waveguide, the dielectric block provided with a dielectric radiator portion proximate the distal end of the waveguide. An RF signal passing through the waveguide and the dielectric block to reflect from the sub-reflector through the dielectric block and at least partially through the dielectric radiator portion to the dish reflector illuminates the dish reflector with a maximum signal intensity and/or signal intensity angular range that is spaced outward from the vertex area of the dish reflector. | 05-05-2016 |
| 343781000 | Plural reflectors | 5 |
| 20080204342 | Reflector Antenna - A reflector antenna includes a feed configured to always point during operation in a direction that opposes ingress of water into the feed, and a reflector having a truncated spherical reflecting surface, wherein a relative orientation of the reflector and the feed is adjustable. Another reflector antenna includes a feed configured to always point during operation in a direction that opposes ingress of water into the feed, and a reflector spaced apart from the feed by a focal length at least as great as a diameter of the reflector. Another reflector antenna includes a feed and a reflector having a truncated spherical reflecting surface, wherein the reflector is spaced apart from the feed by a focal length at least as great as a diameter of the reflector. | 08-28-2008 |
| 20080231533 | Flat-aperture waveguide sidewall-emitting twist-reflector antenna - A flat aperture waveguide sidewall-emitting twist-reflector (FAWSET) antenna, having an E-plane sectoral flare having a depth merely the H-plane width of the waveguide. Extending the E-plane sectoral flare is a twist-reflector tilted from one sidewall of the E-plane flare and a trans-reflector extending from another opposing sidewall of the E-plane flare. An angle between distal end of the twist-reflector and the trans-reflector is a function of the frequency of the incoming wave. | 09-25-2008 |
| 20100194656 | LEAKY WAVE ANTENNA USING WAVES PROPAGATING BETWEEN PARALLEL SURFACES - A leaky wave antenna has electrically conductive surfaces in parallel to each other. At one place a two-dimensional array of slots is provided in one of the surfaces. Elsewhere a feed structure is realized comprising one or more electrically conductive elements coupled between the first and second electrically conductive surface and configured to direct an electromagnetic wave pattern travelling between surfaces towards the array. In an embodiment the feed structure comprises a waveguide formed between walls connecting the surfaces. One of the walls is made to leak in order to feed the array of slots. In an embodiment the feed structure comprises a reflector comprising connections between the surfaces, to direct waves between the surfaces to the array of slots. | 08-05-2010 |
| 20110140980 | BEAM CONTROLLER FOR APERTURE ANTENNA, AND APERTURE ANTENNA THEREWITH - The present invention relates to an aperture antenna capable of controlling a shape of a radiated beam without changing a structure of an aperture antenna by connecting a beam controller with a single aperture antenna. The aperture antenna including a beam controller according to the present invention includes: a waveguide; an aperture horn of which one end is connected to the waveguide and the other end is provided with an opening; and a beam controller including a feeding unit connected to the opening and provided with a plurality of slits, a dielectric layer connected to the feeding unit, and a plurality of patches connected to the dielectric layer to control a beam shape of a signal introduced into the feeding unit and radiated through the patches. | 06-16-2011 |
| 20120098723 | ANTENNA DEVICE - An antenna device including: a reflector antenna including a primary radiator, a feed waveguide for feeding radio waves to the primary radiator, and a reflector; and a radome that covers the reflector antenna, in which the antenna device further includes a sidelobe reduction member attached to a vicinity of the primary radiator or the feed waveguide, the sidelobe reduction member reducing a sidelobe in a specific direction of an antenna by at least one of scattering and absorbing of radio waves reflected by the radome out of the radio waves radiated from the reflector antenna. Therefore, it is possible to reduce a sidelobe deterioration caused by reflection waves from the radome. | 04-26-2012 |
| 20130027262 | WIRELESS COMMUNICATION SYSTEM - A wireless communication system, comprises a tower-shaped antenna includes a leaky coaxial cable that leaks a radio wave and a reflective member that reflect the radio wave leaked from the leaky coaxial cable in the direction perpendicular to an axial direction of the leaky coaxial cable. | 01-31-2013 |
| 20130307741 | WIDE BEAM ANTENNA - A wide beam radio frequency (RF) antenna includes a waveguide and one or more electrically conductive protrusions. The waveguide has at least one electrically conductive interior wall surface, a boresight defined by a longitudinal axis, and an aperture plane, transverse to the longitudinal axis, disposed at a distal end of the waveguide. A first proximal portion of each protrusion is electrically coupled to the electrically conductive interior wall surface, a distal portion of the protrusion being outside the aperture plane. | 11-21-2013 |
| 20130342412 | ANTENNA FEEDHORN WITH ONE-PIECE FEEDCAP - An antenna for use with electromagnetic waves includes a waveguide body having an open end and first threads and a cap having second threads which interface with the first threads to press the cap against the open end. The cap includes a cover which covers the open end when the cap is screwed onto the open end using the first and second threads while allowing the electromagnetic waves to pass through the cover. The antenna can be a horn antenna, and can also be a feedhorn antenna used with a reflector in a reflector antenna. | 12-26-2013 |
| 20140176379 | SATELLITE ANTENNA AND WAVEGUIDE FILTER THEREOF - A waveguide filter is provided. The waveguide filter includes a pipe and a first rib structure. The pipe includes a first inner wall. The first rib structure includes a first rib. The first rib is disposed in the pipe and formed on the first inner wall. The first rib includes a first section and a second section, wherein the first section and the second section extend on a first straight line and are perpendicular to the first inner wall, and a first gap is formed between the first section and the second section, and a first gap distance of the first gap is between 0.1 to 1.2 mm. | 06-26-2014 |
| 20160020523 | Foldable Radio Wave Antenna - A foldable radio wave antenna includes a foldable parabolic reflector member formed a foldable tension member attachable to the peripheral rim of the reflector member. | 01-21-2016 |
| 20160036134 | Foldable Radio Wave Antenna Deployment Apparatus for a Satellite - The present disclosure describes an antenna that has a parabola-shaped, flexible reflector member and one or more radial ribs embedded in the flexible reflector member and arranged to bias the reflector member in an open state. | 02-04-2016 |
| 20160087346 | ANTENNA ASSEMBLY FOR LONG-RANGE HIGH-SPEED WIRELESS COMMUNICATIONS - Various embodiments of antenna assemblies are disclosed herein. In one embodiment, the antenna assembly includes a reflector comprising a center opening, a feed-antenna subassembly situated in front of the reflector, a rear housing situated behind the reflector, and a pole-mounting bracket comprising a base plate situated between the reflector and the rear housing. The feed-antenna subassembly comprises a feed tube that houses at least one of: a transmitter circuit and a receiver circuit. The rear housing is coupled to a front side of the reflector via the center opening. The rear housing comprises a center cavity, and a back end of the feed tube is inserted in and coupled to the center cavity. The base plate is coupled to the reflector and the rear housing in such a way that decoupling between the base plate and the reflector requires a prior decoupling between the feed-antenna subassembly and the rear housing and a prior decoupling between the rear housing and the reflector. | 03-24-2016 |
| 20160104929 | ANTENNA WAVEGUIDE QUICK CONNECT COUPLER - A quick connect coupler assembly for connecting a first waveguide portion to a second waveguide portion is provided. The coupler assembly includes: a first coupler component affixed to the first waveguide portion and a second coupler component affixed to the second waveguide portion. The first coupler component has a plurality of perturbations, while the second coupler component has a plurality of slots and a radially disposed guide or channel. The perturbations align with and pass through the slots into the guide or channel such that the perturbations rotatably move about the guide or channel in a radial direction from an unlocked to a locked position. | 04-14-2016 |
| 20080204341 | BEAM WAVEGUIDE INCLUDING MIZUGUCHI CONDITION REFLECTOR SETS - A beam waveguide may include a first set of dual offset reflectors and a second set of dual offset reflectors. The first set of dual offset reflectors and the second set of dual offset reflectors may each include reflector geometries to produce a radiation pattern that is symmetric about a first axis between the first and second set of dual offset reflectors and to produce an axi-symmetric beam from the second set of dual offset reflectors that is unaffected by any rotation of the first and second set of dual offset reflectors relative to one another about the first axis. | 08-28-2008 |
| 20120287007 | Method and Apparatus for Reflector Antenna with Vertex Region Scatter Compensation - A method and apparatus for enhancing the electrical performance of a reflector antenna. A boom disc mounted upon a feed waveguide supporting a subreflector is dimensioned and positioned for reflection cancellation against the reflected components from the reflector vertex region in the direction of edge illumination half angle T. A dielectric sleeve or RF absorbing material may be placed between the vertex region and the boom disc. | 11-15-2012 |
| 20120306712 | RADIOWAVE ABSORBER AND PARABOLIC ANTENNA - A radiowave absorber of the present invention includes: an upper plate that includes a dielectric material containing conductive particles; a lower plate that is arranged parallel to the upper plate, and includes a dielectric material that contains conductive particles; and a plate-shaped support portion that is arranged between the upper plate and the lower plate, and supports the upper plate and the lower plate. | 12-06-2012 |
| 20130057445 | LOW SIDELOBE REFLECTOR ANTENNA - A front feed reflector antenna with a dish reflector has a reflector focal length to reflector diameter ratio of less than 0.25. A wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block is coupled to a distal end of the waveguide and a sub-reflector is coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. The sub-reflector diameter is dimensioned to be 2.5 wavelengths or more of a desired operating frequency. | 03-07-2013 |
| 20140253402 | Enclosure for Radio, Parabolic Dish Antenna, and Side Lobe Shields - Enclosures for radios, parabolic dish antennas, and side lobe shields are provided herein. A dish antenna includes a parabolic circular reflector bounded by a side lobe shield that extends along a longitudinal axis of the dish antenna in a forward direction forming a front cavity, and a sidewall that extends along the longitudinal axis of the dish antenna in a rearward direction forming a rear cavity. | 09-11-2014 |
| 20090021442 | Self-Supporting Unitary Feed Assembly - A feed assembly for a reflector antenna having a unitary portion of dielectric material, a proximal end of the unitary portion configured for connection with the reflector antenna. The unitary portion having a waveguide portion extending between the proximal end and a sub reflector support having a sub reflector surface at a distal end. The waveguide portion and the sub reflector surface covered with an RF reflective material. The unitary portion may be cost effectively formed via, for example injection molding and or machining. Alternatively, the feed assembly may be formed as a horn feed, without a sub reflector. | 01-22-2009 |
| 20090027289 | BACKFIRE ANTENNA WITH UPWARDLY ORIENTED DIPOLE ASSEMBLY - In one embodiment, a backfire antenna comprises a cup-shaped member defining an outer aperture and an interior cavity, a splash-plate disposed within a plane, and a dipole assembly comprising first and second arms. The first and second arms are both oriented non-parallel to the splash-plate towards the plane. | 01-29-2009 |
| 20100085265 | ARRAY FOR INFLUENCING THE RADIATION CHARACTERISTICS OF A REFLECTOR ANTENNA, PARTICULARLY A CENTRALLY FOCUSED REFLECTOR ANTENNA - The invention relates to an array for influencing the radiation characteristics of a reflector antenna, particularly a centrally focused reflector antenna ( | 04-08-2010 |
| 20110241956 | CASSEGRAIN ANTENNA FOR HIGH GAIN - Provided is a high gain Cassegrain antenna. The antenna includes a feed unit that radiates radio waves, a subreflector that faces a radiation surface of the feed unit and reflects the radiated radio waves, and a main reflector that has a plurality of hole scatterers of different depths facing the subreflector and reflecting again the radio waves reflected from the subreflector. Accordingly, it is possible to manufacture a high-gain broadband antenna at low costs. | 10-06-2011 |
| 20120056793 | REFLECTOR AND PARABOLIC ANTENNA USING THE SAME - A reflector includes a reflective body | 03-08-2012 |
| 20130057444 | CONTROLLED ILLUMINATION DIELECTRIC CONE RADIATOR FOR REFLECTOR ANTENNA - A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface. | 03-07-2013 |
| 20130162492 | ANTENNA PROVIDED WITH FALL-OUT PREVENTING ARRANGEMENT - Provided is an antenna, including: a dielectric support portion mounted to a tip of a waveguide; and a reflector bonded and fixed to the dielectric support portion. The dielectric support portion includes: an accommodating portion accommodating the reflector therein; and a fall-off preventing arrangement preventing the reflector from falling off under a state in which the reflector is accommodated in the accommodating portion. | 06-27-2013 |
| 20130300621 | LOW SIDELOBE REFLECTOR ANTENNA WITH SHIELD - A front feed reflector antenna with a dish reflector has a wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block may be coupled to a distal end of the waveguide and a sub-reflector coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. A subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is | 11-14-2013 |
| 20140139386 | High Efficiency Agile Polarization Diversity Compact Miniaturized Multi-Frequency Band Antenna System With Integrated Distributed Transceivers - A compact, agile polarization diversity, multiband antenna with integrated electronics for satellite communications antenna systems is disclosed. The antenna includes a feed assembly having integrated microwave electronics that are mechanically and electromagnetically coupled thereto in a distributed arrangement so that diverse polarization senses having a low axial ratio and electronic switching control is provided. The microwave electronics include a distributed transmitter that can include high-band and low-band transceivers. The high-band and low-band transceivers can include high-band and low-band transmitter and receiver pairs, respectively. The antenna presented enables the mechanical rotation of the orientation of the high-band transceiver for skew alignment while the low-band transceiver remains stationary relative to the antenna assembly. The low-band transmitter and receiver pair can include planar interfaces electromagnetically coupled to the feed assembly between a main reflector and subreflector via OMTs. The highly compact antenna system presented offers polarization performance previously achievable by only larger devices. | 05-22-2014 |
| 20140247191 | COMPACT LOW SIDELOBE ANTENNA AND FEED NETWORK - An antenna may include a primary reflector having a ring focus; a feed body along an axis of the primary reflector, the feed body including a circular waveguide coaxial with the axis of the primary reflector; a sub-reflector disposed facing an end of the circular waveguide; and a generally cylindrical stem extending from a center of the sub-reflector into the circular waveguide to form a section of annular waveguide. A sub-reflector support may mechanically connect a perimeter of the sub-reflector and an outside surface of the feed body. The sub-reflector, the stem, and the feed body may be collectively configured to couple microwave energy between the annular waveguide and the primary reflector. | 09-04-2014 |
| 20140292605 | REFLECTOR ANTENNA INCLUDING DUAL BAND SPLASHPLATE SUPPORT - A reflector antenna includes a dual-band waveguide feed and a splashplate support arranged to define a space between the waveguide feed aperture and the splashplate. The dual-band waveguide feed is configured to receive an input signal in a first transmission mode, to convert a transmission mode of an upper frequency band from a first transmission mode to a mixed transmission mode including the first transmission mode and a second transmission mode. The supporting portion can be spaced apart from the aperture of the waveguide feed, and may have a thickness corresponding to half a wavelength of a beam emitted from the aperture. | 10-02-2014 |
| 20150042527 | Sub-Reflector Assembly With Extended Dielectric Radiator - In one embodiment, a sub-reflector assembly for a reflector antenna has (i) a waveguide transition at a waveguide end of the sub-reflector assembly and configured to fit within a waveguide, (ii) a dielectric radiator connected to the waveguide transition and extending both laterally and back towards the waveguide end of the sub-reflector assembly, and (iii) a sub-reflector connected to the dielectric radiator. By configuring the dielectric radiator to extend both laterally and back towards the dielectric end of the assembly, radiated energy from the waveguide is directed such that the sub-reflector assembly can be used with shallow reflector dishes (e.g., F/D ratio greater than 0.25) and still achieve sufficiently high directivity. | 02-12-2015 |
| 20150061956 | ANTENNA - A compact antenna that includes a power feeding waveguide, a sub reflection mirror, and a main reflection mirror. Radio waves comprised of a vertical polarized wave and a horizontal polarized wave are transmitted to the power feeding waveguide. The sub reflection mirror is disposed to face an opening of the power feeding waveguide and reflects the radio wave radiated from the opening. The main reflection mirror is disposed to face the sub reflection mirror and outwardly radiates the radio wave reflected by the sub reflection mirror. A front surface of the main reflection mirror has a shape formed by rotating a line reaching one side and the other side of a predetermined parabola curve at least once, around a rotational axis. A front surface of the sub reflection mirror has a shape formed by rotating either one of a stepped line and a wavy line around the rotational axis. | 03-05-2015 |
| 20150084821 | ANTENNA FOR MULTIPLE FREQUENCY BANDS - An exemplary embodiment of an antenna in accordance with the present invention utilizes a sub-reflector and a main reflector with each of them having its own focal-ring type geometry. The antenna cooperates with a signal transmission feed disposed at the center of the antenna axis between the first and main reflectors to emit radio signals towards the sub-reflector. The sub-reflector reflects radio waves towards a main reflector which in turn reflects the radio waves to form the beam pattern emitted by the antenna. The reflecting surface of the sub-reflector is formed by a portion of an axially-displaced ellipse rotated about the antenna axis. The reflecting surface of the main reflector is defined by a section of a parabola rotated about the antenna axis to form a reflecting surface that concavely slopes away from the antenna axis. An embodiment of the antenna provides a wide coverage conical beam with selectable beam peaks that operate over a 2.25:1 frequency band range and provides substantially iso-flux beam density. | 03-26-2015 |
| 20150091768 | RING FOCUS ANTENNA - An antenna includes a main reflector with a focal circle about an axis. A waveguide horn extends from the main reflector along this axis. A sub-reflector is mounted beyond the distal end of the waveguide horn with an annular gap remaining between the sub-reflector and the distal end of the waveguide horn. The annular gap forms a radial transmission line between a first wall on the sub-reflector and a second wall having outer annular corrugated surfaces on the distal end of the waveguide horn. The first wall of the transmission line is a body of revolution of elliptical shape on the sub-reflector. This ellipse is tilted at an angle with respect to the axis, and has a first focal point on the axis. The other focal point is preferably on or near the focal circle. The phase center of the waveguide horn does not coincide with either foci. | 04-02-2015 |
| 20150091769 | DISH ANTENNA HAVING A SELF-SUPPORTING SUB-REFLECTOR ASSEMBLY - An antenna has a waveguide horn extending from a main reflector. A dielectric tube extends from the distal end of the waveguide horn to support a sub-reflector in the focal region of the main reflector. An insert is placed into the dielectric tube to seat against the distal end of the dielectric tube. A fastener secures the insert to the sub-reflector, thereby securing the sub-reflector to the distal end of the dielectric tube. The surface of the insert serves as a continuation of the sub-reflector. The dielectric tube can be equipped with an inwardly-extending collar about its distal end to engage the insert. | 04-02-2015 |
| 20150138029 | CASSEGRAIN-TYPE METAMATERIAL ANTENNA - A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector. | 05-21-2015 |
| 20150357719 | ANTENNA DEVICE - An antenna device capable of performing precise positioning by using a small number of components and having a low side-lobe characteristic is provided. An antenna device includes a primary radiator ( | 12-10-2015 |
| 20160043474 | CONTROLLED ILLUMINATION DIELECTRIC CONE RADIATOR FOR REFLECTOR ANTENNA - A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface. | 02-11-2016 |
| 20160126638 | METHOD FOR DISH REFLECTOR ILLUMINATION VIA SUB-REFLECTOR ASSEMBLY WITH DIELECTRIC RADIATOR PORTION - A method for illuminating a dish reflector of a reflector antenna, including providing a waveguide coupled to a vertex of a dish reflector at a proximal end, a sub-reflector supported by a dielectric block coupled to a distal end of the waveguide, the dielectric block provided with a dielectric radiator portion proximate the distal end of the waveguide. An RF signal passing through the waveguide and the dielectric block to reflect from the sub-reflector through the dielectric block and at least partially through the dielectric radiator portion to the dish reflector illuminates the dish reflector with a maximum signal intensity and/or signal intensity angular range that is spaced outward from the vertex area of the dish reflector. | 05-05-2016 |
| 343781000 | With main and subreflector (Casse-grain type) | 20 |
| 20080204342 | Reflector Antenna - A reflector antenna includes a feed configured to always point during operation in a direction that opposes ingress of water into the feed, and a reflector having a truncated spherical reflecting surface, wherein a relative orientation of the reflector and the feed is adjustable. Another reflector antenna includes a feed configured to always point during operation in a direction that opposes ingress of water into the feed, and a reflector spaced apart from the feed by a focal length at least as great as a diameter of the reflector. Another reflector antenna includes a feed and a reflector having a truncated spherical reflecting surface, wherein the reflector is spaced apart from the feed by a focal length at least as great as a diameter of the reflector. | 08-28-2008 |
| 20080231533 | Flat-aperture waveguide sidewall-emitting twist-reflector antenna - A flat aperture waveguide sidewall-emitting twist-reflector (FAWSET) antenna, having an E-plane sectoral flare having a depth merely the H-plane width of the waveguide. Extending the E-plane sectoral flare is a twist-reflector tilted from one sidewall of the E-plane flare and a trans-reflector extending from another opposing sidewall of the E-plane flare. An angle between distal end of the twist-reflector and the trans-reflector is a function of the frequency of the incoming wave. | 09-25-2008 |
| 20100194656 | LEAKY WAVE ANTENNA USING WAVES PROPAGATING BETWEEN PARALLEL SURFACES - A leaky wave antenna has electrically conductive surfaces in parallel to each other. At one place a two-dimensional array of slots is provided in one of the surfaces. Elsewhere a feed structure is realized comprising one or more electrically conductive elements coupled between the first and second electrically conductive surface and configured to direct an electromagnetic wave pattern travelling between surfaces towards the array. In an embodiment the feed structure comprises a waveguide formed between walls connecting the surfaces. One of the walls is made to leak in order to feed the array of slots. In an embodiment the feed structure comprises a reflector comprising connections between the surfaces, to direct waves between the surfaces to the array of slots. | 08-05-2010 |
| 20110140980 | BEAM CONTROLLER FOR APERTURE ANTENNA, AND APERTURE ANTENNA THEREWITH - The present invention relates to an aperture antenna capable of controlling a shape of a radiated beam without changing a structure of an aperture antenna by connecting a beam controller with a single aperture antenna. The aperture antenna including a beam controller according to the present invention includes: a waveguide; an aperture horn of which one end is connected to the waveguide and the other end is provided with an opening; and a beam controller including a feeding unit connected to the opening and provided with a plurality of slits, a dielectric layer connected to the feeding unit, and a plurality of patches connected to the dielectric layer to control a beam shape of a signal introduced into the feeding unit and radiated through the patches. | 06-16-2011 |
| 20120098723 | ANTENNA DEVICE - An antenna device including: a reflector antenna including a primary radiator, a feed waveguide for feeding radio waves to the primary radiator, and a reflector; and a radome that covers the reflector antenna, in which the antenna device further includes a sidelobe reduction member attached to a vicinity of the primary radiator or the feed waveguide, the sidelobe reduction member reducing a sidelobe in a specific direction of an antenna by at least one of scattering and absorbing of radio waves reflected by the radome out of the radio waves radiated from the reflector antenna. Therefore, it is possible to reduce a sidelobe deterioration caused by reflection waves from the radome. | 04-26-2012 |
| 20130027262 | WIRELESS COMMUNICATION SYSTEM - A wireless communication system, comprises a tower-shaped antenna includes a leaky coaxial cable that leaks a radio wave and a reflective member that reflect the radio wave leaked from the leaky coaxial cable in the direction perpendicular to an axial direction of the leaky coaxial cable. | 01-31-2013 |
| 20130307741 | WIDE BEAM ANTENNA - A wide beam radio frequency (RF) antenna includes a waveguide and one or more electrically conductive protrusions. The waveguide has at least one electrically conductive interior wall surface, a boresight defined by a longitudinal axis, and an aperture plane, transverse to the longitudinal axis, disposed at a distal end of the waveguide. A first proximal portion of each protrusion is electrically coupled to the electrically conductive interior wall surface, a distal portion of the protrusion being outside the aperture plane. | 11-21-2013 |
| 20130342412 | ANTENNA FEEDHORN WITH ONE-PIECE FEEDCAP - An antenna for use with electromagnetic waves includes a waveguide body having an open end and first threads and a cap having second threads which interface with the first threads to press the cap against the open end. The cap includes a cover which covers the open end when the cap is screwed onto the open end using the first and second threads while allowing the electromagnetic waves to pass through the cover. The antenna can be a horn antenna, and can also be a feedhorn antenna used with a reflector in a reflector antenna. | 12-26-2013 |
| 20140176379 | SATELLITE ANTENNA AND WAVEGUIDE FILTER THEREOF - A waveguide filter is provided. The waveguide filter includes a pipe and a first rib structure. The pipe includes a first inner wall. The first rib structure includes a first rib. The first rib is disposed in the pipe and formed on the first inner wall. The first rib includes a first section and a second section, wherein the first section and the second section extend on a first straight line and are perpendicular to the first inner wall, and a first gap is formed between the first section and the second section, and a first gap distance of the first gap is between 0.1 to 1.2 mm. | 06-26-2014 |
| 20160020523 | Foldable Radio Wave Antenna - A foldable radio wave antenna includes a foldable parabolic reflector member formed a foldable tension member attachable to the peripheral rim of the reflector member. | 01-21-2016 |
| 20160036134 | Foldable Radio Wave Antenna Deployment Apparatus for a Satellite - The present disclosure describes an antenna that has a parabola-shaped, flexible reflector member and one or more radial ribs embedded in the flexible reflector member and arranged to bias the reflector member in an open state. | 02-04-2016 |
| 20160087346 | ANTENNA ASSEMBLY FOR LONG-RANGE HIGH-SPEED WIRELESS COMMUNICATIONS - Various embodiments of antenna assemblies are disclosed herein. In one embodiment, the antenna assembly includes a reflector comprising a center opening, a feed-antenna subassembly situated in front of the reflector, a rear housing situated behind the reflector, and a pole-mounting bracket comprising a base plate situated between the reflector and the rear housing. The feed-antenna subassembly comprises a feed tube that houses at least one of: a transmitter circuit and a receiver circuit. The rear housing is coupled to a front side of the reflector via the center opening. The rear housing comprises a center cavity, and a back end of the feed tube is inserted in and coupled to the center cavity. The base plate is coupled to the reflector and the rear housing in such a way that decoupling between the base plate and the reflector requires a prior decoupling between the feed-antenna subassembly and the rear housing and a prior decoupling between the rear housing and the reflector. | 03-24-2016 |
| 20160104929 | ANTENNA WAVEGUIDE QUICK CONNECT COUPLER - A quick connect coupler assembly for connecting a first waveguide portion to a second waveguide portion is provided. The coupler assembly includes: a first coupler component affixed to the first waveguide portion and a second coupler component affixed to the second waveguide portion. The first coupler component has a plurality of perturbations, while the second coupler component has a plurality of slots and a radially disposed guide or channel. The perturbations align with and pass through the slots into the guide or channel such that the perturbations rotatably move about the guide or channel in a radial direction from an unlocked to a locked position. | 04-14-2016 |
| 20080204341 | BEAM WAVEGUIDE INCLUDING MIZUGUCHI CONDITION REFLECTOR SETS - A beam waveguide may include a first set of dual offset reflectors and a second set of dual offset reflectors. The first set of dual offset reflectors and the second set of dual offset reflectors may each include reflector geometries to produce a radiation pattern that is symmetric about a first axis between the first and second set of dual offset reflectors and to produce an axi-symmetric beam from the second set of dual offset reflectors that is unaffected by any rotation of the first and second set of dual offset reflectors relative to one another about the first axis. | 08-28-2008 |
| 20120287007 | Method and Apparatus for Reflector Antenna with Vertex Region Scatter Compensation - A method and apparatus for enhancing the electrical performance of a reflector antenna. A boom disc mounted upon a feed waveguide supporting a subreflector is dimensioned and positioned for reflection cancellation against the reflected components from the reflector vertex region in the direction of edge illumination half angle T. A dielectric sleeve or RF absorbing material may be placed between the vertex region and the boom disc. | 11-15-2012 |
| 20120306712 | RADIOWAVE ABSORBER AND PARABOLIC ANTENNA - A radiowave absorber of the present invention includes: an upper plate that includes a dielectric material containing conductive particles; a lower plate that is arranged parallel to the upper plate, and includes a dielectric material that contains conductive particles; and a plate-shaped support portion that is arranged between the upper plate and the lower plate, and supports the upper plate and the lower plate. | 12-06-2012 |
| 20130057445 | LOW SIDELOBE REFLECTOR ANTENNA - A front feed reflector antenna with a dish reflector has a reflector focal length to reflector diameter ratio of less than 0.25. A wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block is coupled to a distal end of the waveguide and a sub-reflector is coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. The sub-reflector diameter is dimensioned to be 2.5 wavelengths or more of a desired operating frequency. | 03-07-2013 |
| 20140253402 | Enclosure for Radio, Parabolic Dish Antenna, and Side Lobe Shields - Enclosures for radios, parabolic dish antennas, and side lobe shields are provided herein. A dish antenna includes a parabolic circular reflector bounded by a side lobe shield that extends along a longitudinal axis of the dish antenna in a forward direction forming a front cavity, and a sidewall that extends along the longitudinal axis of the dish antenna in a rearward direction forming a rear cavity. | 09-11-2014 |
| 20090021442 | Self-Supporting Unitary Feed Assembly - A feed assembly for a reflector antenna having a unitary portion of dielectric material, a proximal end of the unitary portion configured for connection with the reflector antenna. The unitary portion having a waveguide portion extending between the proximal end and a sub reflector support having a sub reflector surface at a distal end. The waveguide portion and the sub reflector surface covered with an RF reflective material. The unitary portion may be cost effectively formed via, for example injection molding and or machining. Alternatively, the feed assembly may be formed as a horn feed, without a sub reflector. | 01-22-2009 |
| 20090027289 | BACKFIRE ANTENNA WITH UPWARDLY ORIENTED DIPOLE ASSEMBLY - In one embodiment, a backfire antenna comprises a cup-shaped member defining an outer aperture and an interior cavity, a splash-plate disposed within a plane, and a dipole assembly comprising first and second arms. The first and second arms are both oriented non-parallel to the splash-plate towards the plane. | 01-29-2009 |
| 20100085265 | ARRAY FOR INFLUENCING THE RADIATION CHARACTERISTICS OF A REFLECTOR ANTENNA, PARTICULARLY A CENTRALLY FOCUSED REFLECTOR ANTENNA - The invention relates to an array for influencing the radiation characteristics of a reflector antenna, particularly a centrally focused reflector antenna ( | 04-08-2010 |
| 20110241956 | CASSEGRAIN ANTENNA FOR HIGH GAIN - Provided is a high gain Cassegrain antenna. The antenna includes a feed unit that radiates radio waves, a subreflector that faces a radiation surface of the feed unit and reflects the radiated radio waves, and a main reflector that has a plurality of hole scatterers of different depths facing the subreflector and reflecting again the radio waves reflected from the subreflector. Accordingly, it is possible to manufacture a high-gain broadband antenna at low costs. | 10-06-2011 |
| 20120056793 | REFLECTOR AND PARABOLIC ANTENNA USING THE SAME - A reflector includes a reflective body | 03-08-2012 |
| 20130057444 | CONTROLLED ILLUMINATION DIELECTRIC CONE RADIATOR FOR REFLECTOR ANTENNA - A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface. | 03-07-2013 |
| 20130162492 | ANTENNA PROVIDED WITH FALL-OUT PREVENTING ARRANGEMENT - Provided is an antenna, including: a dielectric support portion mounted to a tip of a waveguide; and a reflector bonded and fixed to the dielectric support portion. The dielectric support portion includes: an accommodating portion accommodating the reflector therein; and a fall-off preventing arrangement preventing the reflector from falling off under a state in which the reflector is accommodated in the accommodating portion. | 06-27-2013 |
| 20130300621 | LOW SIDELOBE REFLECTOR ANTENNA WITH SHIELD - A front feed reflector antenna with a dish reflector has a wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block may be coupled to a distal end of the waveguide and a sub-reflector coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. A subtended angle between the longitudinal axis and a line between the focal point and a distal periphery of the shield is | 11-14-2013 |
| 20140139386 | High Efficiency Agile Polarization Diversity Compact Miniaturized Multi-Frequency Band Antenna System With Integrated Distributed Transceivers - A compact, agile polarization diversity, multiband antenna with integrated electronics for satellite communications antenna systems is disclosed. The antenna includes a feed assembly having integrated microwave electronics that are mechanically and electromagnetically coupled thereto in a distributed arrangement so that diverse polarization senses having a low axial ratio and electronic switching control is provided. The microwave electronics include a distributed transmitter that can include high-band and low-band transceivers. The high-band and low-band transceivers can include high-band and low-band transmitter and receiver pairs, respectively. The antenna presented enables the mechanical rotation of the orientation of the high-band transceiver for skew alignment while the low-band transceiver remains stationary relative to the antenna assembly. The low-band transmitter and receiver pair can include planar interfaces electromagnetically coupled to the feed assembly between a main reflector and subreflector via OMTs. The highly compact antenna system presented offers polarization performance previously achievable by only larger devices. | 05-22-2014 |
| 20140247191 | COMPACT LOW SIDELOBE ANTENNA AND FEED NETWORK - An antenna may include a primary reflector having a ring focus; a feed body along an axis of the primary reflector, the feed body including a circular waveguide coaxial with the axis of the primary reflector; a sub-reflector disposed facing an end of the circular waveguide; and a generally cylindrical stem extending from a center of the sub-reflector into the circular waveguide to form a section of annular waveguide. A sub-reflector support may mechanically connect a perimeter of the sub-reflector and an outside surface of the feed body. The sub-reflector, the stem, and the feed body may be collectively configured to couple microwave energy between the annular waveguide and the primary reflector. | 09-04-2014 |
| 20140292605 | REFLECTOR ANTENNA INCLUDING DUAL BAND SPLASHPLATE SUPPORT - A reflector antenna includes a dual-band waveguide feed and a splashplate support arranged to define a space between the waveguide feed aperture and the splashplate. The dual-band waveguide feed is configured to receive an input signal in a first transmission mode, to convert a transmission mode of an upper frequency band from a first transmission mode to a mixed transmission mode including the first transmission mode and a second transmission mode. The supporting portion can be spaced apart from the aperture of the waveguide feed, and may have a thickness corresponding to half a wavelength of a beam emitted from the aperture. | 10-02-2014 |
| 20150042527 | Sub-Reflector Assembly With Extended Dielectric Radiator - In one embodiment, a sub-reflector assembly for a reflector antenna has (i) a waveguide transition at a waveguide end of the sub-reflector assembly and configured to fit within a waveguide, (ii) a dielectric radiator connected to the waveguide transition and extending both laterally and back towards the waveguide end of the sub-reflector assembly, and (iii) a sub-reflector connected to the dielectric radiator. By configuring the dielectric radiator to extend both laterally and back towards the dielectric end of the assembly, radiated energy from the waveguide is directed such that the sub-reflector assembly can be used with shallow reflector dishes (e.g., F/D ratio greater than 0.25) and still achieve sufficiently high directivity. | 02-12-2015 |
| 20150061956 | ANTENNA - A compact antenna that includes a power feeding waveguide, a sub reflection mirror, and a main reflection mirror. Radio waves comprised of a vertical polarized wave and a horizontal polarized wave are transmitted to the power feeding waveguide. The sub reflection mirror is disposed to face an opening of the power feeding waveguide and reflects the radio wave radiated from the opening. The main reflection mirror is disposed to face the sub reflection mirror and outwardly radiates the radio wave reflected by the sub reflection mirror. A front surface of the main reflection mirror has a shape formed by rotating a line reaching one side and the other side of a predetermined parabola curve at least once, around a rotational axis. A front surface of the sub reflection mirror has a shape formed by rotating either one of a stepped line and a wavy line around the rotational axis. | 03-05-2015 |
| 20150084821 | ANTENNA FOR MULTIPLE FREQUENCY BANDS - An exemplary embodiment of an antenna in accordance with the present invention utilizes a sub-reflector and a main reflector with each of them having its own focal-ring type geometry. The antenna cooperates with a signal transmission feed disposed at the center of the antenna axis between the first and main reflectors to emit radio signals towards the sub-reflector. The sub-reflector reflects radio waves towards a main reflector which in turn reflects the radio waves to form the beam pattern emitted by the antenna. The reflecting surface of the sub-reflector is formed by a portion of an axially-displaced ellipse rotated about the antenna axis. The reflecting surface of the main reflector is defined by a section of a parabola rotated about the antenna axis to form a reflecting surface that concavely slopes away from the antenna axis. An embodiment of the antenna provides a wide coverage conical beam with selectable beam peaks that operate over a 2.25:1 frequency band range and provides substantially iso-flux beam density. | 03-26-2015 |
| 20150091768 | RING FOCUS ANTENNA - An antenna includes a main reflector with a focal circle about an axis. A waveguide horn extends from the main reflector along this axis. A sub-reflector is mounted beyond the distal end of the waveguide horn with an annular gap remaining between the sub-reflector and the distal end of the waveguide horn. The annular gap forms a radial transmission line between a first wall on the sub-reflector and a second wall having outer annular corrugated surfaces on the distal end of the waveguide horn. The first wall of the transmission line is a body of revolution of elliptical shape on the sub-reflector. This ellipse is tilted at an angle with respect to the axis, and has a first focal point on the axis. The other focal point is preferably on or near the focal circle. The phase center of the waveguide horn does not coincide with either foci. | 04-02-2015 |
| 20150091769 | DISH ANTENNA HAVING A SELF-SUPPORTING SUB-REFLECTOR ASSEMBLY - An antenna has a waveguide horn extending from a main reflector. A dielectric tube extends from the distal end of the waveguide horn to support a sub-reflector in the focal region of the main reflector. An insert is placed into the dielectric tube to seat against the distal end of the dielectric tube. A fastener secures the insert to the sub-reflector, thereby securing the sub-reflector to the distal end of the dielectric tube. The surface of the insert serves as a continuation of the sub-reflector. The dielectric tube can be equipped with an inwardly-extending collar about its distal end to engage the insert. | 04-02-2015 |
| 20150138029 | CASSEGRAIN-TYPE METAMATERIAL ANTENNA - A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector. | 05-21-2015 |
| 20150357719 | ANTENNA DEVICE - An antenna device capable of performing precise positioning by using a small number of components and having a low side-lobe characteristic is provided. An antenna device includes a primary radiator ( | 12-10-2015 |
| 20160043474 | CONTROLLED ILLUMINATION DIELECTRIC CONE RADIATOR FOR REFLECTOR ANTENNA - A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface. | 02-11-2016 |
| 20160126638 | METHOD FOR DISH REFLECTOR ILLUMINATION VIA SUB-REFLECTOR ASSEMBLY WITH DIELECTRIC RADIATOR PORTION - A method for illuminating a dish reflector of a reflector antenna, including providing a waveguide coupled to a vertex of a dish reflector at a proximal end, a sub-reflector supported by a dielectric block coupled to a distal end of the waveguide, the dielectric block provided with a dielectric radiator portion proximate the distal end of the waveguide. An RF signal passing through the waveguide and the dielectric block to reflect from the sub-reflector through the dielectric block and at least partially through the dielectric radiator portion to the dish reflector illuminates the dish reflector with a maximum signal intensity and/or signal intensity angular range that is spaced outward from the vertex area of the dish reflector. | 05-05-2016 |
