Class / Patent application number | Description | Number of patent applications / Date published |
333021000 | WAVE MODE CONVERTERS | 37 |
20080211604 | High frequency circuit board converting a transmission mode for mounting a semiconductor device - A microstrip line includes a signal strip conductor and a ground conductor. A coplanar line includes two regions. A first region includes a signal strip conductor which is connected to the signal strip conductor of the microstrip line via a wire or the like and a ground strip conductor which continues to the ground conductor. A second region is formed with a ground strip conductor formed above the ground strip conductor via a through hole. A transmission mode changes itself in the microstrip line, the first region of the coplanar line, and the second region of the coplanar line in the sequence as described. This enables converting the transmission mode efficiently from the microstrip line to the coplanar line. | 09-04-2008 |
20080297283 | Mode Transition Circuit for Transferring Radio Frequency Signal and Transceiver Module Having the Same - Provided is a mode transition circuit for transferring a RF signal and a transceiver module having the same. The mode transition circuit includes: a planar transmission line mounted at a RF substrate for receiving a RF signal from a RF signal generating unit; a via formed inside the RF substrate and connected to one side of the planar transmission line for receiving the RF signal from the planar transmission line; at least one of metal patches formed inside the RF substrate and connected to the one side of the via for receiving the RF signal from the via; and a hole formed inside a low frequency substrate and connected to one side of the metal patch for receiving the RF signal from the metal patch. | 12-04-2008 |
20100033272 | Apparatus and method for forming a bandgap surface and waveguide transition modules incorporating a bandgap surface - A bandgap surface for use in a waveguide transition module. The surface may be constructed with a ground plane; a capacitive layer including a plurality of capacitive elements arranged in a polar configuration within a common plane, and spaced apart from said ground plane; and a plurality of electrically conductive vias formed within a dielectric layer of material that conductively couple said ground plane to each of said capacitive elements. | 02-11-2010 |
20100123529 | MODE CONVERTER AND MICROWAVE ROTARY JOINT WITH THE MODE CONVERTER - A microwave rotary joint comprises a mode converter for converting microwave signals of a TE | 05-20-2010 |
20100265014 | Evanescent electromagnetic wave conversion lenses I - Apparatus, methods, and systems provide conversion of evanescent electromagnetic waves to non-evanescent electromagnetic waves and/or conversion of non-evanescent electromagnetic waves to evanescent electromagnetic waves. In some approaches the conversion includes propagation of electromagnetic waves within an indefinite electromagnetic medium, and the indefinite medium may include an artificially-structured material such as a layered structure or other metamaterial. | 10-21-2010 |
20110063053 | Waveguide to Dipole Transition - A radiating element having a transition from a waveguide to a dipole radiator. The radiating element utilizes the electric field of electromagnetic waves propagating in the waveguide to excite a section of a microstrip transmission line that is collinear with the waveguide's propagation direction. A waveguide septum guides the electric field of the electromagnetic waves into the transmission line and provides impedance matching. The transmission line can be formed on a first side of a dielectric substrate having a ground plane on a second side of the substrate. A first dipole leg is formed by making a ninety degree turn in the transmission line. A second dipole leg is extended from the ground plane and turned opposite from the first dipole leg. The transmission line includes a transformer having stepped or gradual changes in width of the transmission line leading to the dipole to provide additional impedance matching. | 03-17-2011 |
20120075040 | Systems and Methods of a Rectangular-to-Circular Waveguide Transition - Systems and methods for a filtering wave energy using a rectangular-to-circular waveguide transition are discussed herein. An exemplary system comprises a rectangular-to-circular waveguide transition and a filter card. The rectangular-to-circular waveguide transition may include a front section and a back section opposite the front section, the rectangular-to-circular waveguide transition defining a circular hole extending from the front section of the rectangular-to-circular waveguide transition through the back section, the rectangular-to-circular waveguide transition further having a first arcuate region on the face of the transition, the first arcuate region defining a first cavity extending from the circular hole through the first arcuate region, the rectangular-to-circular waveguide transition also having a second arcuate region defining a second cavity opposite the first cavity, the second cavity extending from the circular hole through the second arcuate region. The filter card may be configured to be placed across the circular hole of the rectangular-to-circular waveguide transition. | 03-29-2012 |
20140091884 | Substrate Integrated Waveguide to Air Filled Waveguide Transition - A substrate integrated waveguide to air filled waveguide transition includes an electrically conductive top layer, an electrically conductive base layer spaced apart from the top layer, wherein the top and base layers each extend along a length axis from a first end to a second end of the transition, the top layer defining a width axis normal to the length axis in the plane of the top layer, and wherein a separation between the top layer and base layer increases towards the second end in a transition region, wherein the transition further includes a dielectric layer sandwiched between the top and base layers, the dielectric layer including a taper portion having a width which tapers to a point at an end point between first and second ends, the width of the taper decreasing towards the second end. | 04-03-2014 |
20140285289 | Horn Antenna for Launching Electromagnetic Signal from Microstrip to Dielectric Waveguide - A horn antenna is formed within a multilayer substrate and has a generally trapezoidal shaped top plate and bottom plate formed in different layers of the multilayer substrate. A set of densely spaced vias form two sidewalls of the horn antenna by coupling adjacent edges of the top plate and the bottom plate. The horn antenna has a narrow input end and a wider flare end. A microstrip line is coupled to the top plate and a ground plane element is coupled to the bottom plate at the input end of the horn antenna. | 09-25-2014 |
20150022287 | Wave Mode Converter - Wave mode converters, and methods of using wave mode converters are disclosed. The wave mode converters include a radial waveguide including a generally disk-like structure to receive a radially propagating field derived from rectangular TE10 waveguide mode, and a body including a plurality of spaced apart apertures. | 01-22-2015 |
20150364803 | ELECTROMAGNETIC WAVE MODE TRANSDUCER - Electromagnetic (EM) mode transition or transducer structures and related devices, techniques, and methods are described. An exemplary EM mode transition or transducer structure can comprise a waveguide cavity section configured to transmit a transverse electric mode 20 (TE | 12-17-2015 |
20160049714 | Transition Between a SIW and a Waveguide Interface - The present invention relates to atransition arrangement ( | 02-18-2016 |
20160093936 | RADIO FREQUENCY ELECTRIC POWER CONVERSION MECHANISM - A radio frequency electric power conversion mechanism of the present invention includes a circuit board including a fiber reinforced resin board, instead of an expensive ceramic circuit board. The radio frequency electric power conversion mechanism has a combined configuration of a plurality of fiber reinforced resin boards laminated to each other with a conductive foil therebetween, a via hole array made of an electric conductor passing through the boards, a transmission line closely adhered to the surface of a board, and a waveguide having a notch in a part of the waveguide on the aperture side. The radio frequency electric power conversion mechanism further has other structural features. | 03-31-2016 |
20160111764 | TRANSIT STRUCTURE OF WAVEGUIDE AND SIW - A transit structure of a waveguide and a SIW is provided. According to the present invention, a SIW and a waveguide are directly connected so that when a signal is transited with a reduced loss and a signal is transmitted while satisfying a frequency band width required for an automotive radar. Further, signal transmission characteristic at every frequency in a bandwidth may be uniformly maintained. Further, an additional dielectric substrate is not required so that a reduced size, a reduced weight, and a reduced cost may be achieved and a process of bonding different substrates is not required. | 04-21-2016 |
20160181681 | Non-Contact On-Wafer S-Parameter Measurements of Devices at Millimeter-Wave to Terahertz Frequencies | 06-23-2016 |
20080238579 | Waveguide Corner and Radio Device - A waveguide corner including a first rectangular waveguide and a second rectangular waveguide. An end face of the second rectangular waveguide is made open to an H-plane wall of the first rectangular waveguide and the H-plane walls of the second rectangular waveguide are disposed along the pipe axis of the first rectangular waveguide. Accordingly, planes of polarization of electromagnetic waves being propagated in the first and second rectangular waveguides are made perpendicular to each other. | 10-02-2008 |
20080238580 | T-Shape Waveguide Twist-Transformer - A junction for connecting two waveguides ( | 10-02-2008 |
20090027142 | MULTI-BAND TRANSDUCER FOR MULTI-BAND FEED HORN - A multi-band transducer is described incorporating a coaxial waveguide interface for use with a multi-band feed and incorporating bent shaped probes yielding all-planar interfaces in microstrip for all frequency ranges and suitable for mass production. Hybrids can be incorporated for linear or circular polarization applications. | 01-29-2009 |
20090146764 | Down-converter Having 90-Degree Hybrid Coupler with Open-circuited Transmission line(s) or Short-circuited Transmission line(s) Included Therein - A down-converter includes two low-noise amplifiers, a 90-degree hybrid coupler, and a down-converting circuit. The 90-degree hybrid coupler is coupled to the two low-noise amplifiers for transforming a first amplified signal and a second amplified signal into a first coupler output signal and a second coupler output signal. The 90-degree hybrid coupler includes a coupler main body, a first transmission line, and a second transmission line, wherein the first and the second transmission lines are coupled to the coupler main body. The coupler main body includes two input ports respectively coupled to the two low-noise amplifiers and two output ports for respectively outputting the first and the second coupler output signals. The first and the second transmission lines are each an open-circuited transmission line or a short-circuited transmission line. The down-converting circuit is coupled to the two output ports of the 90-degree hybrid coupler. | 06-11-2009 |
20090146765 | Down-converter Having Matching Circuits with Tuning Mechanism Coupled to 90-Degree Hybrid Coupler Included Therein - A down-converter includes two low-noise amplifiers, a 90-degree hybrid coupler, two first matching circuits, and a down-converting circuit. The two low-noise amplifiers respectively amplify a first beacon signal and a second beacon signal to generate a first amplified signal and a second amplified signal. The 90-degree hybrid coupler includes two input ports and two output ports for transforming the first amplified signal and the second amplified signal into a first coupler output signal and a second coupler output signal. The two first matching circuits are respectively coupled to the two input ports or the two output ports of the 90-degree hybrid coupler and each first matching circuit has a first tuning mechanism disposed in one side of the first matching circuit and not contacting the first matching circuit. The down-converting circuit performs a frequency down-conversion on the first coupler output signal and the second coupler output signal. | 06-11-2009 |
20090174506 | WAVEGUIDE AND METHOD FOR ADJUSTING WAVEGUIDE STRUCTURE THEREOF - A waveguide comprises a connecting part, a main chamber and a buffer. The connecting part is connected to the main chamber via the buffer. The side length of the junction between the connecting part and the buffer is smaller than that of the junction between the buffer and the main chamber. | 07-09-2009 |
20090201107 | Waveguide Junction - A junction ( | 08-13-2009 |
20090243761 | Circular Polarizer for Coaxial Waveguide - There is disclosed a linear polarization to circular polarization converter. An outside surface of an inner conductor may be coaxial with the inside surface of an outer conductor. First and second diametrically opposed conductive fins may extend outward from the outer surface of the inner conductor. First and second dielectric fins may be interlocked with the first and second conductive fins, respectively. | 10-01-2009 |
20100109814 | Circular Polarizer Using Interlocked Conductive and Dielectric Fins in an Annular Waveguide - There is disclosed a linear polarization to circular polarization converter. An outside surface of an inner conductor may be coaxial with the inside surface of an outer conductor. First and second diametrically opposed fins may extend outward from the outer surface of the inner conductor. Each of the first and second fins may include a conductive fin and a dielectric fin. | 05-06-2010 |
20100277261 | DUAL-BAND COUPLING DEVICE - A coupling device is provided. The coupling device has a substrate, a ground element, a first feed conductor and a second feed conductor. The substrate has a first surface and a second surface. The ground element is disposed on the second surface, wherein the ground element has a first annular groove, a second annular groove and a feed slot, the second annular groove surrounds the first annular groove, the feed slot is connected to the first annular groove and the second annular groove. The first feed conductor is disposed on the first surface corresponding to the first annular groove and the second annular groove, wherein the first feed conductor couples the ground element to feed an electric current. The second feed conductor is disposed on the first surface corresponding to the feed slot, wherein the second feed conductor couples the feed slot to feed a magnetic current. | 11-04-2010 |
20110018656 | WAVEGUIDE ADAPTER ABLE TO GENERATE CIRCULARLY POLARIZED WAVE - Disclosed is a waveguide adapter able to generate a circularly polarized wave. The waveguide adapter to be coupled with a horn antenna realizes a polarized wave conversion function for converting a linearly polarized wave signal into a circularly polarized wave signal, or vice versa, and an adapter function for converting a waveguide signal into an external transmission line signal, resulting in a simplified configuration and small size of a communication system using a circularly polarized wave signal. The waveguide adaptor includes a probe to transmit a linearly polarized wave signal from an external transmission line to a waveguide transmission line, a polarized wave conversion line reflector located in the rear of the probe to convert a vertically polarized wave into a horizontally polarized wave, and a back-short member to forwardly transmit a rearward signal. The waveguide adapter is applicable to communication systems using circularly polarized wave signals. | 01-27-2011 |
20110133863 | High Power Waveguide Polarizer With Broad Bandwidth and Low Loss, and Methods of Making and Using Same - Embodiments of the invention provide high power waveguide polarizers with broad bandwidth and low loss, and methods of making and using the same. Under one aspect of the present invention, a waveguide polarizer includes a hollow waveguide body having an interior surface; a first ridge disposed on the interior surface of the hollow waveguide body and having an inward-facing surface; and a first plurality of projections disposed on the inward-facing surface of the first ridge. The projections may have a width that is narrower than that of the ridge, and a length that is tunable. The length of the projections may be selected to induce about a 90-degree phase delay in a first mode propagating in a plane parallel to the first ridge relative to a second mode propagating in a plane perpendicular to the first ridge. | 06-09-2011 |
20120229232 | Rotatable Polarizer/Filter Device and Feed Network Using the Same - A feed network may include a cylindrical common waveguide terminating in a common port and an orthomode transducer having a first port for coupling a first linearly polarized mode to the cylindrical common waveguide and a second port for coupling a second linearly polarized mode to the cylindrical common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode. A filter-polarizer element may be disposed within the cylindrical common waveguide. The filter-polarizer element may be rotatable about an axis of the cylindrical common waveguide. The filter-polarizer element may be configured to cause a predetermined relative phase shift between a first signal and a second signal propagating in the cylindrical common waveguide. The filter-polarizer element may be further configured to suppress propagation of at least one undesired mode in the cylindrical common waveguide. | 09-13-2012 |
20120319804 | Circular Polarizer Using Stepped Conductive and Dielectric Fins In An Annular Waveguide - A polarization converter may include an annular waveguide comprising an inner conductor having an outer surface and an outer conductor having an inner surface coaxial with the outer surface of the inner conductor. A plurality of loading structures may be disposed within the annular waveguide to form a plurality of regions within the annular waveguide including an alternating sequence of high phase shift regions and low phase shift regions along a direction of propagation of an electromagnetic wave. The plurality of loading structures may be configured to introduce a predetermined relative phase shift between orthogonally polarized first and second components of the electromagnetic wave for a predetermined operating frequency band. The plurality of loading structures may be further configured to suppress propagation of one or more higher order modes in the annular waveguide over the operating frequency band. | 12-20-2012 |
20130120085 | APPARATUS AND METHOD FOR A VARIABLE-RATIO ROTATIONALLY-POLARIZED HIGH POWER INDUSTRIAL MICROWAVE FEED NETWORK - Disclosed is a waveguide for even dispersion of microwaves into a microwave chamber. The microwaves are dispersed in a manner that the target in the microwave chamber does not need to be turned in order to accomplish even and uniform heating of the target. The waveguide includes a first rectangular section adjacent to the source, and a second rectangular section which is sized to separate, disperse and randomized microwaves received from the first waveguide. | 05-16-2013 |
20130120086 | COMPACT OMT DEVICE - The present invention relates to an orthomode transducer (OMT) device ( | 05-16-2013 |
20130222081 | ANTENNA FEED WITH POLARIZATION ROTATION - Various exemplary embodiments relate to an antenna feed configured to receive a signal having a wavelength. They antenna feed may include a cylindrical body and four pin groups. Each pin group may include two pins in close proximity extending across the center of the cylindrical body. One of the two pins may be rotated approximately 22.5° from the angle of the other pin. Each pin group may be spaced approximately one quarter of a wavelength away from each other, and may be rotated approximately 22.5° from the angle of the previous pin group. | 08-29-2013 |
20140104017 | COMPACT TWIST FOR CONNECTING ORTHOGONAL WAVEGUIDES - A compact interfacing device for rotating electro-magnetic fields between an input and output waveguide includes a support bar extending between opposing sides of a frame, the frame encircling an interior space divided by the support bar; and a dipole bar orientated orthogonal to the support bar. When the input waveguide interfaces an input-side of the frame and is arranged so that an extent of an input width of the input waveguide is orientated at first angle with respect to an extent of the dipole-bar length, and when the output waveguide interfaces an output-side of the frame and is arranged so that an extent of an output width of the output waveguide is orientated at a second angle with respect to the extent of the dipole-bar length, an input electric field aligned perpendicular to the extent of the input width is rotated upon propagating through the compact interfacing device. | 04-17-2014 |
20140152404 | DEVICE FOR SWITCHING BETWEEN LINEAR AND CIRCULAR POLARIZATION USING A ROTATABLE DEPOLARIZER - A system for receiving a signal from one or more satellites or for transmitting a signal to one or more satellites and a method of operating the system, the system comprising a frame, a signal converter for converting between a received/transmitted signal and a corresponding signal, the converter being positioned, in relation to the frame, rotational around a predetermined axis, and a depolarizer mounted, in relation to the frame, rotational around the predetermined axis, the method comprising the sequence of steps of rotating one of the converter and the depolarizer independently of the other of the converter and the depolarizer, fixing the depolarizer in relation to the converter at a predetermined rotational relationship and rotating both the converter and the depolarizer. | 06-05-2014 |
20150091671 | INNER-TUBE WITH OPPOSING SHALLOW-CAVITIES FOR USE IN A COAXIAL POLARIZER - A coaxial polarizer is provided. The coaxial polarizer includes an outer-conductive tube, an inner-conductive tube positioned within and axially aligned with the outer-conductive tube, and two dielectric bars each having a flat-first surface. The inner-conductive tube has two shallow-cavities on opposing portions of an outer surface of the inner-conductive tube. The shallow-cavities each have at least one planar area having a cavity length parallel to a Z axis and a cavity width, including a minimum width, perpendicular to the Z axis and to a radial direction of the inner-conductive tube. The flat-first surface has a dielectric length and width that are parallel and perpendicular to the Z axis, respectively. The dielectric length and dielectric width are less than the cavity length and the minimum width, respectively. The two flat-first surfaces of the respective two dielectric bars contact at least a portion of the respective two planar areas of the two shallow-cavities. | 04-02-2015 |
20150357695 | A POLARIZER AND A METHOD OF OPERATING THE POLARIZER - A polarizer, such as a septum polarizer, which may alter between two states wherein, effectively, the septum is rotated 180 degrees around the longitudinal axis of the waveguide so that the polarization of the signals in the waveguide may easily be altered without having to alter receivers/transmitters connected to the waveguide. | 12-10-2015 |
20160172732 | DIELECTRIC SLAB CIRCULAR WAVEGUIDE POLARIZER | 06-16-2016 |
333021000 | Polarization converters | 22 |
20080211604 | High frequency circuit board converting a transmission mode for mounting a semiconductor device - A microstrip line includes a signal strip conductor and a ground conductor. A coplanar line includes two regions. A first region includes a signal strip conductor which is connected to the signal strip conductor of the microstrip line via a wire or the like and a ground strip conductor which continues to the ground conductor. A second region is formed with a ground strip conductor formed above the ground strip conductor via a through hole. A transmission mode changes itself in the microstrip line, the first region of the coplanar line, and the second region of the coplanar line in the sequence as described. This enables converting the transmission mode efficiently from the microstrip line to the coplanar line. | 09-04-2008 |
20080297283 | Mode Transition Circuit for Transferring Radio Frequency Signal and Transceiver Module Having the Same - Provided is a mode transition circuit for transferring a RF signal and a transceiver module having the same. The mode transition circuit includes: a planar transmission line mounted at a RF substrate for receiving a RF signal from a RF signal generating unit; a via formed inside the RF substrate and connected to one side of the planar transmission line for receiving the RF signal from the planar transmission line; at least one of metal patches formed inside the RF substrate and connected to the one side of the via for receiving the RF signal from the via; and a hole formed inside a low frequency substrate and connected to one side of the metal patch for receiving the RF signal from the metal patch. | 12-04-2008 |
20100033272 | Apparatus and method for forming a bandgap surface and waveguide transition modules incorporating a bandgap surface - A bandgap surface for use in a waveguide transition module. The surface may be constructed with a ground plane; a capacitive layer including a plurality of capacitive elements arranged in a polar configuration within a common plane, and spaced apart from said ground plane; and a plurality of electrically conductive vias formed within a dielectric layer of material that conductively couple said ground plane to each of said capacitive elements. | 02-11-2010 |
20100123529 | MODE CONVERTER AND MICROWAVE ROTARY JOINT WITH THE MODE CONVERTER - A microwave rotary joint comprises a mode converter for converting microwave signals of a TE | 05-20-2010 |
20100265014 | Evanescent electromagnetic wave conversion lenses I - Apparatus, methods, and systems provide conversion of evanescent electromagnetic waves to non-evanescent electromagnetic waves and/or conversion of non-evanescent electromagnetic waves to evanescent electromagnetic waves. In some approaches the conversion includes propagation of electromagnetic waves within an indefinite electromagnetic medium, and the indefinite medium may include an artificially-structured material such as a layered structure or other metamaterial. | 10-21-2010 |
20110063053 | Waveguide to Dipole Transition - A radiating element having a transition from a waveguide to a dipole radiator. The radiating element utilizes the electric field of electromagnetic waves propagating in the waveguide to excite a section of a microstrip transmission line that is collinear with the waveguide's propagation direction. A waveguide septum guides the electric field of the electromagnetic waves into the transmission line and provides impedance matching. The transmission line can be formed on a first side of a dielectric substrate having a ground plane on a second side of the substrate. A first dipole leg is formed by making a ninety degree turn in the transmission line. A second dipole leg is extended from the ground plane and turned opposite from the first dipole leg. The transmission line includes a transformer having stepped or gradual changes in width of the transmission line leading to the dipole to provide additional impedance matching. | 03-17-2011 |
20120075040 | Systems and Methods of a Rectangular-to-Circular Waveguide Transition - Systems and methods for a filtering wave energy using a rectangular-to-circular waveguide transition are discussed herein. An exemplary system comprises a rectangular-to-circular waveguide transition and a filter card. The rectangular-to-circular waveguide transition may include a front section and a back section opposite the front section, the rectangular-to-circular waveguide transition defining a circular hole extending from the front section of the rectangular-to-circular waveguide transition through the back section, the rectangular-to-circular waveguide transition further having a first arcuate region on the face of the transition, the first arcuate region defining a first cavity extending from the circular hole through the first arcuate region, the rectangular-to-circular waveguide transition also having a second arcuate region defining a second cavity opposite the first cavity, the second cavity extending from the circular hole through the second arcuate region. The filter card may be configured to be placed across the circular hole of the rectangular-to-circular waveguide transition. | 03-29-2012 |
20140091884 | Substrate Integrated Waveguide to Air Filled Waveguide Transition - A substrate integrated waveguide to air filled waveguide transition includes an electrically conductive top layer, an electrically conductive base layer spaced apart from the top layer, wherein the top and base layers each extend along a length axis from a first end to a second end of the transition, the top layer defining a width axis normal to the length axis in the plane of the top layer, and wherein a separation between the top layer and base layer increases towards the second end in a transition region, wherein the transition further includes a dielectric layer sandwiched between the top and base layers, the dielectric layer including a taper portion having a width which tapers to a point at an end point between first and second ends, the width of the taper decreasing towards the second end. | 04-03-2014 |
20140285289 | Horn Antenna for Launching Electromagnetic Signal from Microstrip to Dielectric Waveguide - A horn antenna is formed within a multilayer substrate and has a generally trapezoidal shaped top plate and bottom plate formed in different layers of the multilayer substrate. A set of densely spaced vias form two sidewalls of the horn antenna by coupling adjacent edges of the top plate and the bottom plate. The horn antenna has a narrow input end and a wider flare end. A microstrip line is coupled to the top plate and a ground plane element is coupled to the bottom plate at the input end of the horn antenna. | 09-25-2014 |
20150022287 | Wave Mode Converter - Wave mode converters, and methods of using wave mode converters are disclosed. The wave mode converters include a radial waveguide including a generally disk-like structure to receive a radially propagating field derived from rectangular TE10 waveguide mode, and a body including a plurality of spaced apart apertures. | 01-22-2015 |
20150364803 | ELECTROMAGNETIC WAVE MODE TRANSDUCER - Electromagnetic (EM) mode transition or transducer structures and related devices, techniques, and methods are described. An exemplary EM mode transition or transducer structure can comprise a waveguide cavity section configured to transmit a transverse electric mode 20 (TE | 12-17-2015 |
20160049714 | Transition Between a SIW and a Waveguide Interface - The present invention relates to atransition arrangement ( | 02-18-2016 |
20160093936 | RADIO FREQUENCY ELECTRIC POWER CONVERSION MECHANISM - A radio frequency electric power conversion mechanism of the present invention includes a circuit board including a fiber reinforced resin board, instead of an expensive ceramic circuit board. The radio frequency electric power conversion mechanism has a combined configuration of a plurality of fiber reinforced resin boards laminated to each other with a conductive foil therebetween, a via hole array made of an electric conductor passing through the boards, a transmission line closely adhered to the surface of a board, and a waveguide having a notch in a part of the waveguide on the aperture side. The radio frequency electric power conversion mechanism further has other structural features. | 03-31-2016 |
20160111764 | TRANSIT STRUCTURE OF WAVEGUIDE AND SIW - A transit structure of a waveguide and a SIW is provided. According to the present invention, a SIW and a waveguide are directly connected so that when a signal is transited with a reduced loss and a signal is transmitted while satisfying a frequency band width required for an automotive radar. Further, signal transmission characteristic at every frequency in a bandwidth may be uniformly maintained. Further, an additional dielectric substrate is not required so that a reduced size, a reduced weight, and a reduced cost may be achieved and a process of bonding different substrates is not required. | 04-21-2016 |
20160181681 | Non-Contact On-Wafer S-Parameter Measurements of Devices at Millimeter-Wave to Terahertz Frequencies | 06-23-2016 |
20080238579 | Waveguide Corner and Radio Device - A waveguide corner including a first rectangular waveguide and a second rectangular waveguide. An end face of the second rectangular waveguide is made open to an H-plane wall of the first rectangular waveguide and the H-plane walls of the second rectangular waveguide are disposed along the pipe axis of the first rectangular waveguide. Accordingly, planes of polarization of electromagnetic waves being propagated in the first and second rectangular waveguides are made perpendicular to each other. | 10-02-2008 |
20080238580 | T-Shape Waveguide Twist-Transformer - A junction for connecting two waveguides ( | 10-02-2008 |
20090027142 | MULTI-BAND TRANSDUCER FOR MULTI-BAND FEED HORN - A multi-band transducer is described incorporating a coaxial waveguide interface for use with a multi-band feed and incorporating bent shaped probes yielding all-planar interfaces in microstrip for all frequency ranges and suitable for mass production. Hybrids can be incorporated for linear or circular polarization applications. | 01-29-2009 |
20090146764 | Down-converter Having 90-Degree Hybrid Coupler with Open-circuited Transmission line(s) or Short-circuited Transmission line(s) Included Therein - A down-converter includes two low-noise amplifiers, a 90-degree hybrid coupler, and a down-converting circuit. The 90-degree hybrid coupler is coupled to the two low-noise amplifiers for transforming a first amplified signal and a second amplified signal into a first coupler output signal and a second coupler output signal. The 90-degree hybrid coupler includes a coupler main body, a first transmission line, and a second transmission line, wherein the first and the second transmission lines are coupled to the coupler main body. The coupler main body includes two input ports respectively coupled to the two low-noise amplifiers and two output ports for respectively outputting the first and the second coupler output signals. The first and the second transmission lines are each an open-circuited transmission line or a short-circuited transmission line. The down-converting circuit is coupled to the two output ports of the 90-degree hybrid coupler. | 06-11-2009 |
20090146765 | Down-converter Having Matching Circuits with Tuning Mechanism Coupled to 90-Degree Hybrid Coupler Included Therein - A down-converter includes two low-noise amplifiers, a 90-degree hybrid coupler, two first matching circuits, and a down-converting circuit. The two low-noise amplifiers respectively amplify a first beacon signal and a second beacon signal to generate a first amplified signal and a second amplified signal. The 90-degree hybrid coupler includes two input ports and two output ports for transforming the first amplified signal and the second amplified signal into a first coupler output signal and a second coupler output signal. The two first matching circuits are respectively coupled to the two input ports or the two output ports of the 90-degree hybrid coupler and each first matching circuit has a first tuning mechanism disposed in one side of the first matching circuit and not contacting the first matching circuit. The down-converting circuit performs a frequency down-conversion on the first coupler output signal and the second coupler output signal. | 06-11-2009 |
20090174506 | WAVEGUIDE AND METHOD FOR ADJUSTING WAVEGUIDE STRUCTURE THEREOF - A waveguide comprises a connecting part, a main chamber and a buffer. The connecting part is connected to the main chamber via the buffer. The side length of the junction between the connecting part and the buffer is smaller than that of the junction between the buffer and the main chamber. | 07-09-2009 |
20090201107 | Waveguide Junction - A junction ( | 08-13-2009 |
20090243761 | Circular Polarizer for Coaxial Waveguide - There is disclosed a linear polarization to circular polarization converter. An outside surface of an inner conductor may be coaxial with the inside surface of an outer conductor. First and second diametrically opposed conductive fins may extend outward from the outer surface of the inner conductor. First and second dielectric fins may be interlocked with the first and second conductive fins, respectively. | 10-01-2009 |
20100109814 | Circular Polarizer Using Interlocked Conductive and Dielectric Fins in an Annular Waveguide - There is disclosed a linear polarization to circular polarization converter. An outside surface of an inner conductor may be coaxial with the inside surface of an outer conductor. First and second diametrically opposed fins may extend outward from the outer surface of the inner conductor. Each of the first and second fins may include a conductive fin and a dielectric fin. | 05-06-2010 |
20100277261 | DUAL-BAND COUPLING DEVICE - A coupling device is provided. The coupling device has a substrate, a ground element, a first feed conductor and a second feed conductor. The substrate has a first surface and a second surface. The ground element is disposed on the second surface, wherein the ground element has a first annular groove, a second annular groove and a feed slot, the second annular groove surrounds the first annular groove, the feed slot is connected to the first annular groove and the second annular groove. The first feed conductor is disposed on the first surface corresponding to the first annular groove and the second annular groove, wherein the first feed conductor couples the ground element to feed an electric current. The second feed conductor is disposed on the first surface corresponding to the feed slot, wherein the second feed conductor couples the feed slot to feed a magnetic current. | 11-04-2010 |
20110018656 | WAVEGUIDE ADAPTER ABLE TO GENERATE CIRCULARLY POLARIZED WAVE - Disclosed is a waveguide adapter able to generate a circularly polarized wave. The waveguide adapter to be coupled with a horn antenna realizes a polarized wave conversion function for converting a linearly polarized wave signal into a circularly polarized wave signal, or vice versa, and an adapter function for converting a waveguide signal into an external transmission line signal, resulting in a simplified configuration and small size of a communication system using a circularly polarized wave signal. The waveguide adaptor includes a probe to transmit a linearly polarized wave signal from an external transmission line to a waveguide transmission line, a polarized wave conversion line reflector located in the rear of the probe to convert a vertically polarized wave into a horizontally polarized wave, and a back-short member to forwardly transmit a rearward signal. The waveguide adapter is applicable to communication systems using circularly polarized wave signals. | 01-27-2011 |
20110133863 | High Power Waveguide Polarizer With Broad Bandwidth and Low Loss, and Methods of Making and Using Same - Embodiments of the invention provide high power waveguide polarizers with broad bandwidth and low loss, and methods of making and using the same. Under one aspect of the present invention, a waveguide polarizer includes a hollow waveguide body having an interior surface; a first ridge disposed on the interior surface of the hollow waveguide body and having an inward-facing surface; and a first plurality of projections disposed on the inward-facing surface of the first ridge. The projections may have a width that is narrower than that of the ridge, and a length that is tunable. The length of the projections may be selected to induce about a 90-degree phase delay in a first mode propagating in a plane parallel to the first ridge relative to a second mode propagating in a plane perpendicular to the first ridge. | 06-09-2011 |
20120229232 | Rotatable Polarizer/Filter Device and Feed Network Using the Same - A feed network may include a cylindrical common waveguide terminating in a common port and an orthomode transducer having a first port for coupling a first linearly polarized mode to the cylindrical common waveguide and a second port for coupling a second linearly polarized mode to the cylindrical common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode. A filter-polarizer element may be disposed within the cylindrical common waveguide. The filter-polarizer element may be rotatable about an axis of the cylindrical common waveguide. The filter-polarizer element may be configured to cause a predetermined relative phase shift between a first signal and a second signal propagating in the cylindrical common waveguide. The filter-polarizer element may be further configured to suppress propagation of at least one undesired mode in the cylindrical common waveguide. | 09-13-2012 |
20120319804 | Circular Polarizer Using Stepped Conductive and Dielectric Fins In An Annular Waveguide - A polarization converter may include an annular waveguide comprising an inner conductor having an outer surface and an outer conductor having an inner surface coaxial with the outer surface of the inner conductor. A plurality of loading structures may be disposed within the annular waveguide to form a plurality of regions within the annular waveguide including an alternating sequence of high phase shift regions and low phase shift regions along a direction of propagation of an electromagnetic wave. The plurality of loading structures may be configured to introduce a predetermined relative phase shift between orthogonally polarized first and second components of the electromagnetic wave for a predetermined operating frequency band. The plurality of loading structures may be further configured to suppress propagation of one or more higher order modes in the annular waveguide over the operating frequency band. | 12-20-2012 |
20130120085 | APPARATUS AND METHOD FOR A VARIABLE-RATIO ROTATIONALLY-POLARIZED HIGH POWER INDUSTRIAL MICROWAVE FEED NETWORK - Disclosed is a waveguide for even dispersion of microwaves into a microwave chamber. The microwaves are dispersed in a manner that the target in the microwave chamber does not need to be turned in order to accomplish even and uniform heating of the target. The waveguide includes a first rectangular section adjacent to the source, and a second rectangular section which is sized to separate, disperse and randomized microwaves received from the first waveguide. | 05-16-2013 |
20130120086 | COMPACT OMT DEVICE - The present invention relates to an orthomode transducer (OMT) device ( | 05-16-2013 |
20130222081 | ANTENNA FEED WITH POLARIZATION ROTATION - Various exemplary embodiments relate to an antenna feed configured to receive a signal having a wavelength. They antenna feed may include a cylindrical body and four pin groups. Each pin group may include two pins in close proximity extending across the center of the cylindrical body. One of the two pins may be rotated approximately 22.5° from the angle of the other pin. Each pin group may be spaced approximately one quarter of a wavelength away from each other, and may be rotated approximately 22.5° from the angle of the previous pin group. | 08-29-2013 |
20140104017 | COMPACT TWIST FOR CONNECTING ORTHOGONAL WAVEGUIDES - A compact interfacing device for rotating electro-magnetic fields between an input and output waveguide includes a support bar extending between opposing sides of a frame, the frame encircling an interior space divided by the support bar; and a dipole bar orientated orthogonal to the support bar. When the input waveguide interfaces an input-side of the frame and is arranged so that an extent of an input width of the input waveguide is orientated at first angle with respect to an extent of the dipole-bar length, and when the output waveguide interfaces an output-side of the frame and is arranged so that an extent of an output width of the output waveguide is orientated at a second angle with respect to the extent of the dipole-bar length, an input electric field aligned perpendicular to the extent of the input width is rotated upon propagating through the compact interfacing device. | 04-17-2014 |
20140152404 | DEVICE FOR SWITCHING BETWEEN LINEAR AND CIRCULAR POLARIZATION USING A ROTATABLE DEPOLARIZER - A system for receiving a signal from one or more satellites or for transmitting a signal to one or more satellites and a method of operating the system, the system comprising a frame, a signal converter for converting between a received/transmitted signal and a corresponding signal, the converter being positioned, in relation to the frame, rotational around a predetermined axis, and a depolarizer mounted, in relation to the frame, rotational around the predetermined axis, the method comprising the sequence of steps of rotating one of the converter and the depolarizer independently of the other of the converter and the depolarizer, fixing the depolarizer in relation to the converter at a predetermined rotational relationship and rotating both the converter and the depolarizer. | 06-05-2014 |
20150091671 | INNER-TUBE WITH OPPOSING SHALLOW-CAVITIES FOR USE IN A COAXIAL POLARIZER - A coaxial polarizer is provided. The coaxial polarizer includes an outer-conductive tube, an inner-conductive tube positioned within and axially aligned with the outer-conductive tube, and two dielectric bars each having a flat-first surface. The inner-conductive tube has two shallow-cavities on opposing portions of an outer surface of the inner-conductive tube. The shallow-cavities each have at least one planar area having a cavity length parallel to a Z axis and a cavity width, including a minimum width, perpendicular to the Z axis and to a radial direction of the inner-conductive tube. The flat-first surface has a dielectric length and width that are parallel and perpendicular to the Z axis, respectively. The dielectric length and dielectric width are less than the cavity length and the minimum width, respectively. The two flat-first surfaces of the respective two dielectric bars contact at least a portion of the respective two planar areas of the two shallow-cavities. | 04-02-2015 |
20150357695 | A POLARIZER AND A METHOD OF OPERATING THE POLARIZER - A polarizer, such as a septum polarizer, which may alter between two states wherein, effectively, the septum is rotated 180 degrees around the longitudinal axis of the waveguide so that the polarization of the signals in the waveguide may easily be altered without having to alter receivers/transmitters connected to the waveguide. | 12-10-2015 |
20160172732 | DIELECTRIC SLAB CIRCULAR WAVEGUIDE POLARIZER | 06-16-2016 |