| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 333240100 | Nonreciprocal gyromagnetic type (e.g., directional phase shifters) | 32 |
| 20090167454 | Non-Reciprocal Circuit Device - A non-reciprocal circuit device comprising a first inductance element disposed between a first input/output port and a second input/output port; a second inductance element disposed between the second input/output port and the ground; a first capacitance element constituting a first parallel resonance circuit with the first inductance element; a resistance element parallel-connected to the first parallel resonance circuit; a third inductance element series-connected between the second inductance element and the ground; and a second capacitance element constituting a second parallel resonance circuit with the second and third inductance elements. | 07-02-2009 |
| 20160006092 | NONRECIPROCAL TRANSMISSION LINE APPARATUS WHOSE PROPAGATION CONSTANTS IN FORWARD AND BACKWARD DIRECTIONS ARE DIFFERENT FROM EACH OTHER - When a phase constant in a first mode of propagation in the forward direction is β | 01-07-2016 |
| 333240200 | Nonreciprocal attenuators or isolators | 30 |
| 20080218288 | NONRECIPROCAL CIRCUIT DEVICE - A nonreciprocal circuit device includes a ferrite to which a direct magnetic field is applied using permanent magnets, central electrodes arranged on the ferrite, and a circuit substrate. The first central electrode is made of conductive films, and the second central electrode is made of conductive films. Some of the conductive films of the second central electrode are arranged on the first main surface of the ferrite, and a conductive film of the first central electrode is arranged on the conductive films through an insulating film. Furthermore, another one of the conductive films of the first central electrode is arranged on the second main surface, and the remainder of the conductive films of the second central electrode are arranged through an insulating film on the conductive film. | 09-11-2008 |
| 20080218289 | NONRECIPROCAL CIRCUIT DEVICE AND MANUFACTURING METHOD OF THE SAME - A nonreciprocal circuit device includes permanent magnets, a ferrite to which a direct current magnetic field is applied by the permanent magnets, first and second central electrodes arranged on the ferrite, and a circuit substrate. A ferrite-magnet assembly mounted on the circuit substrate is covered with a resin layer. The resin layer includes an innermost layer made of a non-magnetic resin material and a magnetic resin layer having a magnetic filler mixed therein. | 09-11-2008 |
| 20080309426 | IRREVERSIBLE CIRCUIT ELEMENT - An irreversible circuit element is configured by including a magnetic substance, a plurality of central conductors L | 12-18-2008 |
| 20090002090 | Integrated Non-Reciprocal Component Comprising a Ferrite Substrate - The invention relates to a non-reciprocal component ( | 01-01-2009 |
| 20090045884 | NON-RECIPROCAL CIRCUIT DEVICE - A non-reciprocal circuit device comprising a first inductance element L | 02-19-2009 |
| 20090058551 | NONRECIPROCAL CIRCUIT ELEMENT - A non-reciprocal circuit element capable of improving an isolation characteristic without increasing an insertion loss includes a permanent magnet, a ferrite arranged to receive a direct-current magnetic field from the permanent magnet, and first and second center electrodes disposed on the ferrite. One end of the first center electrode is connected to an input port, whereas the other end is connected to an output port. One end of the second center electrode is connected to the output port, whereas the other end is connected to a ground port. A matching capacitor and a resistor are connected between the input port and the output port. An inductor and a capacitor constituting an LC resonant circuit are connected in series with the resistor. | 03-05-2009 |
| 20090219106 | TWO-PORT ISOLATOR - A two-port isolator comprising a central conductor assembly comprising first and second central conductors disposed on a ferrite plate, the first central conductor being connected between a first input/output port and a second input/output port, and the second central conductor being connected between a second input/output port and a ground, wherein the first and second central conductors are constituted by two conductor strip patterns formed on both surfaces of an insulating substrate, wherein the conductor strip patterns are crossing at a predetermined angle with insulation, and wherein both end portions of the conductor strip patterns extend from edges of the insulating substrate and are bent to cover side surfaces of the ferrite plate. | 09-03-2009 |
| 20090261920 | NON-RECIPROCAL CIRCUIT ELEMENT - A non-reciprocal circuit element (for example, a 2-port isolator) includes a tabular yoke, permanent magnets, a ferrite to which a direct current magnetic field is applied from the permanent magnets, a first center electrode and a second center electrode disposed on the ferrite, and a circuit board. The tabular yoke is disposed on the upper surface of a ferrite magnet assembly with a dielectric layer therebetween. For example, the dielectric layer could be an adhesive agent layer made of an epoxy-based resin. The above arrangement provides a non-reciprocal circuit element having a simplified structure, a stable electrical characteristic, and a high reliability is provided. | 10-22-2009 |
| 20090273410 | NONRECIPROCAL CIRCUIT DEVICE AND MANUFACTURING METHOD THEREOF - A nonreciprocal circuit device includes a ferrite-magnet element having ferrite provided with first and second central electrodes intersecting each other in an insulated manner and two permanent magnets arranged to sandwich the ferrite to apply a DC magnetic field thereto, a substrate on which the ferrite-magnet element and matching circuit elements are mounted, and a flat plate yoke. A first resin layer made of a cured liquid resin is provided at bonding portions of the ferrite-magnet element to the substrate, and a second resin layer made of a cured soft sheet-shaped resin adhered to a rear surface of the flat plate yoke is provided around the ferrite-magnet element and the matching circuit elements. | 11-05-2009 |
| 20100060374 | NON-RECIPROCAL CIRCUIT DEVICE AND ITS CENTRAL CONDUCTOR ASSEMBLY - A central conductor assembly for a non-reciprocal circuit device, at least a first central conductor constituting a first inductance element and a second central conductor constituting a second inductance element being integrally formed in a laminate comprising pluralities of magnetic layers, the first central conductor being formed by series-connecting first and second lines formed on a first main surface of the laminate to third lines formed in the laminate through via-holes, and the second central conductor being formed on the first main surface of the laminate such that it extends between the first and second lines and crosses the third lines via a magnetic layer. | 03-11-2010 |
| 20100079217 | Multilayer metamaterial isolator - A multilayer metamaterial isolator and method of fabricating the same. A first layer or surface of a multilayer dielectric substrate includes a first leg of a first resonator loop. A second layer or surface of the multilayer dielectric substrate includes a second leg of the first resonator loop. A third leg of the first resonator loop extends through the multilayer dielectric substrate interconnecting the first and second legs of the first resonator loop. | 04-01-2010 |
| 20100127792 | NONRECIPROCAL CIRCUIT DEVICE - A nonreciprocal circuit device (2-port isolator) includes a ferrite-magnet assembly including a ferrite, a first center electrode, and a second center electrode. The ferrite is sandwiched between a pair of permanent magnets and receives a direct-current magnetic field applied thereto. The first and second center electrodes are arranged on the ferrite. The ferrite includes a center layer and an outer layer ensuring an insulation state of the first and second center electrodes. The saturation magnetization of the outer layer is larger than the saturation magnetization of the center layer. | 05-27-2010 |
| 20100127793 | NONRECIPROCAL CIRCUIT DEVICE - A nonreciprocal circuit device (2-port isolator) includes a ferrite-magnet assembly including a ferrite, a first center electrode, and a second center electrode. The ferrite is sandwiched between a pair of permanent magnets and receives a direct-current magnetic field applied thereto. The first and second center electrodes are arranged on the ferrite. The ferrite includes a center layer and an outer layer ensuring an insulation state of the first and second center electrodes. The saturation magnetization of the outer layer is smaller than that of the center layer. | 05-27-2010 |
| 20100127794 | NON-RECIPROCAL CIRCUIT DEVICE - A non-reciprocal circuit device capable of preventing and minimizing disturbances in magnetic field distribution in a ferrite to thereby improve insertion loss characteristics and isolation characteristics includes a ferrite to which a DC magnetic field is applied by permanent magnets and first and second center electrodes disposed on the ferrite. A conductive material is embedded in a recess provided in an end surface of the ferrite that is perpendicular or substantially perpendicular to the first and second principal surfaces of the ferrite, and the first and second center electrodes are electrically connected to the conductive material to define a circuit. Opening portions of the recess facing the first and second principal surfaces are arranged such that the opening portion at a downstream side of a direction of application of the DC magnetic field by the permanent magnets is larger than the opening portion at an upstream side thereof. | 05-27-2010 |
| 20100164642 | NON-RECIPROCAL CIRCUIT DEVICE - A non-reciprocal circuit device includes a ferrite arranged to receive a direct-current magnetic field from a permanent magnet, a first central electrode and a second central electrode arranged on main surfaces of the ferrite. Electrodes are provided in recesses provided on both top and bottom surfaces of the ferrite. These electrodes are soldered to terminal electrodes provided on a circuit board and include a countermeasure to prevent the electrodes from detaching from the recesses when a pulling force is applied to a joining portion therebetween. | 07-01-2010 |
| 20100182095 | NON-RECIPROCAL CIRCUIT DEVICE - A non-reciprocal circuit device includes a yoke that is small-sized, has a simple structure, has sufficient adhesive strength, and can achieve favorable performance characteristics. The non-reciprocal circuit device includes a planar yoke, permanent magnets, a ferrite to which a DC magnetic field is applied by the permanent magnets, and first and second center electrodes located on the ferrite. The planar yoke is located on the upper surface of the ferrite-magnet assembly through an adhesive layer. On the rear surface of the yoke, protrusions are arranged in a lattice manner, and the protrusions increase the adhesive strength and facilitate the flow of a high-frequency field generated from the second center electrode. | 07-22-2010 |
| 20100188161 | NON-RECIPROCAL CIRCUIT DEVICE - A nonreciprocal circuit device has a structure that allows a direct current magnetic field having an even density to be applied to a necessary portion of a ferrite without impairing a reduction in profile so as to improve insertion loss. The nonreciprocal circuit device, for example, a two-port isolator, includes permanent magnets, a ferrite to which a direct current magnetic field is applied by the permanent magnets, and a first center electrode and a second center electrode that are disposed on the ferrite. The permanent magnets are disposed so as to oppose principal surfaces of the ferrite. Portions of each of the permanent magnets opposing relay electrodes on top and bottom surfaces are preferably thicker than other portions thereof. | 07-29-2010 |
| 20100219903 | NONRECIPROCAL CIRCUIT DEVICE - A nonreciprocal circuit device attenuates unnecessary waves having a higher frequency than that of a fundamental wave, without increasing insertion loss. The nonreciprocal circuit device in the form of a 2-port type isolator includes a ferrite on which a first central electrode and a second central electrode are arranged to cross each other and so as to be electrically insulated from each other. A bypass circuit including a phase shifter and a filter is provided between an input port and an output port, and the bypass circuit does not allow signals in the fundamental wave band to pass through and also attenuates harmonics. | 09-02-2010 |
| 20110037529 | NON-RECIPROCAL CIRCUIT AND NON-RECIPROCAL CIRCUIT DEVICE, AND CENTRAL CONDUCTOR ASSEMBLY USED THEREIN - A central conductor assembly for use in a non-reciprocal circuit comprising a first inductance element between a first input/output port and a second input/output port, and a second inductance element between the second input/output port and a ground port, a magnetic substrate being integrally provided with a first central conductor constituting the first inductance element and a second central conductor constituting the second inductance element; and the second central conductor being crossing the first central conductor on a main surface side of the substrate via a magnetic layer or a dielectric layer, with at least one end portion thereof bent such that high-frequency current flows therethrough in the same direction as or in an opposite direction to that of high-frequency current flowing through the first central conductor. | 02-17-2011 |
| 20120056690 | MAGNETIC RESONANCE TYPE ISOLATOR - A magnetic resonance type isolator includes a ferrite; a connection conductor that is arranged on the ferrite and includes a first port, a second port and a third port; a permanent magnet that applies a direct current magnetic field to the ferrite; an inductor that defines a reactance element; and capacitors that define an impedance matching circuit. A main line arranged between the first port and the second port of the connection conductor does not resonate, an end portion of a sub-line that branches from the main line serves as the third port, and a wave reflected from the sub-line is modulated so that its phase is shifted by 90° or about 90° at an intersection of the connection conductor. The inductor is connected to the third port and the capacitors are connected to the first and second ports, respectively. | 03-08-2012 |
| 20120056691 | MAGNETIC RESONANCE TYPE ISOLATOR - A magnetic resonance type isolator includes a ferrite; a connection conductor that is arranged on the ferrite and includes first, second and third ports; a permanent magnet that applies a direct current magnetic field to the ferrite; a capacitor (or an inductor) that defines a first reactance element; and a capacitor (or an inductor) that defines a second reactance element. A main line arranged between the first port and the second port of the connection conductor does not resonate, an end portion of a sub-line that branches off from the main line serves as the third port, and a wave reflected from the sub-line is modulated so that its phase is shifted by 90° or about 90° at an intersection of the connection conductor. One of the capacitors is connected to the third port and the other capacitor is connected between the first port and the second port. | 03-08-2012 |
| 20120126911 | ELECTROMAGNETIC WAVE ISOLATOR - Provided is an electromagnetic wave isolator having at least one microstructured surface, which provides a change in electromagnetic properties across the depth of the microstructured surface. | 05-24-2012 |
| 20130147574 | NON-RECIPROCAL CIRCUIT ELEMENT - In a non-reciprocal circuit element, a first center electrode and a second center electrode are disposed in a ferrite so as to intersect with each other in an insulated state. The ferrite receives a direct-current magnetic field from a permanent magnet. One end of the first center electrode is connected to a first port, the other end thereof is connected to a second port, one end of the second center electrode is connected to the second port, and the other end thereof is connected to a third port. Between the first and second ports, a terminating resistor and a capacitance-variable capacitor are connected in parallel to the first center electrode. By changing the capacitance value of the capacitor, the isolation frequency is adjusted. | 06-13-2013 |
| 20130321094 | ISOLATOR AND ISOLATOR MANUFACTURING METHOD - In certain aspects of the invention, an isolator is configured by a reception circuit, a transmission circuit, and a transformer. In some aspects, the transmission circuit is disposed in an anterior surface of a semiconductor substrate. The transformer is disposed in a posterior surface of the semiconductor substrate and transmits in an electrically isolated state to the reception circuit, a signal input from the transmission circuit. The transformer is configured by a primary coil and a secondary coil. The primary coil can be configured by a metal film embedded in an oxide film inside a coil trench. The secondary coil can be disposed inside an insulating film covering the primary coil so as to oppose the primary coil and is insulated from the primary coil by the insulating film. | 12-05-2013 |
| 20140015620 | HIGH-FREQUENCY MODULE - In a high-frequency module, an input terminal, an output terminal and a ground terminal, which are arranged so as to be capable of being visually checked, and wiring line electrodes located on a mounting surface are electrically connected to each other by wires and therefore the connection state of a non-reciprocal circuit element to the wiring line electrodes on the mounting surface of the substrate can be easily visually checked and an impedance adjustment between the non-reciprocal circuit element and the wiring line electrodes located on the mounting surface of the substrate on which the non-reciprocal circuit element is mounted or electronic components mounted on the mounting surface can be easily performed by adjusting the lengths of the wires. | 01-16-2014 |
| 20150070103 | NON-RECIPROCAL CIRCUIT ELEMENT - A non-reciprocal circuit element includes a permanent magnet, a microwave magnetic body to which a direct current magnetic field is applied by the permanent magnet, a first center electrode that is wrapped around the microwave magnetic body, is connected at one end to an input port, and is connected at another end to an output port, a second center electrode that is wrapped around the microwave magnetic body while intersecting with the first center electrode so as to be insulated from the first center electrode, is connected at one end to the output port, and is connected at another end to a ground port, a first matching capacitance connected between the input port and the output port in parallel with the first center electrode, a terminating resistance connected between the input port and the output port in parallel with the first center electrode, and a second matching capacitance connected between the output port and the ground port. A sub-center electrode is connected in parallel to a portion of the second center electrode. | 03-12-2015 |
| 20150303544 | TWO-PORT NON-RECIPROCAL CIRCUIT ELEMENT - A two-port non-reciprocal circuit element includes a ferrite, a first central electrode disposed on the ferrite and including an end connected to an input port and another end connected to an output port, a second central electrode disposed on the ferrite so as to intersect the first central electrode while being electrically insulated from the first central electrode, the second central electrode including an end connected to the input port and another end connected to a ground port, a capacitor connected between the input port and the output port, a resistor connected between the input port and the output port, a capacitor connected between the output port and the ground port, an input terminal, and an output terminal. A capacitor is connected at least between the input port and the input terminal or between the output port and the output terminal, and a capacitor and an inductor are connected in series between the input terminal and the output terminal. | 10-22-2015 |
| 20150303545 | NON-RECIPROCAL CIRCUIT ELEMENT - A non-reciprocal circuit element includes a ferrite to which a direct current magnetic field is applied by permanent magnets, and first and second central electrodes arranged on the ferrite so as to cross each other while being insulated from each other. One end of the first central electrode is connected to an input port and another end thereof is connected to an output port. One end of the second central electrode is connected to the output port and another end thereof is connected to ground. A first capacitor is connected between the input port and the output port and a second capacitor is connected between the output port and ground. A resistor is connected between the input port and the output port and a third capacitor and an inductor are connected in series with the resistor R. A fourth capacitor is connected between the input port and ground. Capacitances of the first capacitor and the third capacitor are variable. | 10-22-2015 |
| 20150372365 | IRREVERSIBLE CIRCUIT ELEMENT AND MODULE - An irreversible circuit element includes first and second high pass isolators each including first and second center electrodes intersecting with and being insulated from each other on a ferrite to which a direct-current magnetic field is applied with a permanent magnet. One end of the first center electrode is an output port and the other end thereof is an input port, and one end of the second center electrode is another output port and the other end thereof is a ground port. A pass frequency band of the first isolator is higher than a pass frequency band of the second isolator. Respective output portions of the first and second isolators are electrically connected and defined as one output terminal, and a low pass filter LPF is inserted between the output terminal and the output port of the second isolator. | 12-24-2015 |
| 20160079948 | EFFICIENT PASSIVE BROADBAND GYRATOR - A gyrator for AC signals comprises a Hall effect material, means for coupling an alternating current (I | 03-17-2016 |
