| Patent application number | Description | Published |
|---|
| 20080204168 | VARIABLE RESONATOR, TUNABLE FILTER, AND ELECTRIC CIRCUIT DEVICE - A variable resonator that comprises a loop line ( | 08-28-2008 |
| 20080204169 | VARIABLE RESONATOR, TUNABLE BANDWIDTH FILTER, AND ELECTRIC CIRCUIT DEVICE - A variable resonator that comprises a loop line ( | 08-28-2008 |
| 20080268796 | RADIO COMMUNICATION DEVICE AND POWER SUPPLYING METHOD FOR RADIO COMMUNICATION DEVICE - A radio communication device in which the output transmission signal of a high-frequency power amplifying part is sent out to an antenna via a circulator, a high-frequency signal reflected from the antenna is transferred via the circulator to a rectifying part to obtain a direct current power, and the direct current power is supplied to a power amplifying part or another constituent part in the radio communication device as an aid to the power supply from a power supply unit. | 10-30-2008 |
| 20080278260 | MATCHING CIRCUIT - First, second and third matching parts | 11-13-2008 |
| 20080279122 | LEAKAGE POWER REDUCTION APPARATUS - A circulator extracts a transmission signal sent from a transmitter to antenna via the circulator and a duplexer, reflected by an antenna, and returned via the duplexer to the transmitter side. The amplitude and phase of the extracted signal are adjusted by an amplitude-and-phase adjuster to generate an offset signal having the same amplitude and the opposite phase with respect to a leaking transmission signal included in a signal output from a third terminal of the duplexer when combined by a combiner. The offset signal is combined in the combiner with the leaking transmission signal included in the signal output from the third terminal of the duplexer to suppress the leaking transmission signal. | 11-13-2008 |
| 20080309426 | IRREVERSIBLE CIRCUIT ELEMENT - An irreversible circuit element is configured by including a magnetic substance, a plurality of central conductors L | 12-18-2008 |
| 20090002069 | VARIABLE CIRCUIT, COMMUNICATION APPARATUS, MOBILE COMMUNICATION APPARATUS AND COMMUNICATION SYSTEM - A variable circuit that has a device that changes the mechanical state thereof and has a characteristic that is changed by a change of the mechanical state of the device, the variable circuit including: a controlling section | 01-01-2009 |
| 20090066443 | SIGNAL SELECTING DEVICE - A signal selecting device according to the present invention has two input/output ports, a plurality of resonating parts, a plurality of impedance transforming parts, and a controlling part. The resonating parts have a ring conductor having a length equal to one wavelength at a resonant frequency or an integral multiple thereof and a plurality of switches each of which is connected to a different part of the ring conductor at one end and to a ground conductor at the other end. The controlling part controls the state of the switches. The resonating parts are disposed in series between the two input/output ports. The impedance transforming parts are disposed between the input/output ports in such a manner that the impedance transforming parts at the both ends are disposed between the input/output port and the resonating part and the remaining impedance transforming parts are disposed between the resonating parts. | 03-12-2009 |
| 20090121803 | DUPLEXER AND TRANSCEIVER - A duplexer according to the present invention includes a first port, a second port and a third port for external input/output, a first path formed between the first port and the third port, a second path formed between the second port and the third port, a phase shifting part provided for each path, and a resonating part provided for each path. At least any of the resonating parts has a ring conductor having a length equal to one wavelength at a resonant frequency or an integral multiple thereof, a plurality of passive circuits, and a plurality of switches each of which is connected to a different part of the ring conductor at one end and to any of the passive circuits at the other end. A switch may simply be connected to a ground conductor instead of being connected to the passive circuit. | 05-14-2009 |
| 20090206942 | NON-RECIPROCAL CIRCUIT DEVICE - A non-reciprocal circuit device comprising a magnetic plate F | 08-20-2009 |
| 20100194491 | MULTIBAND MATCHING CIRCUIT AND MULTIBAND POWER AMPLIFIER - A multiband matching circuit includes a first matching unit, a second matching unit, and a third matching unit, with all units being connected in series in a signal path. Matching with target impedance is established at a first frequency by appropriately designing the first matching unit and at a second frequency by appropriately designing the second and third matching units. The second matching unit and the third matching unit are designed to make the conversion ratio of the impedance viewed from the connection point between the second matching unit and the third matching unit to a circuit element to the target impedance smaller than the conversion ratio of the impedance viewed from the connection point between the first matching unit and the second matching unit to the circuit element to the target impedance, at the second frequency. | 08-05-2010 |
| 20110080230 | BIAS CIRCUIT - A bias circuit includes: a bias supply terminal | 04-07-2011 |
| 20110115574 | VARIABLE RESONATOR AND VARIABLE FILTER - A switch is replaced with a parallel resonant circuit | 05-19-2011 |
