Patent application number | Description | Published |
20080238570 | Spst Switch, Spdt Switch and Mpmt Switch - A single pole single throw switch for controlling propagation of a high frequency signal between an input terminal ( | 10-02-2008 |
20100045348 | OSCILLATOR, TRANSMITTER-RECEIVER AND FREQUENCY SYNTHESIZER - An output terminal | 02-25-2010 |
20110267141 | MULTIPORT AMPLIFIER AND WIRELESS DEVICE USING THE SAME - A multiport amplifier and a wireless device using the same are obtained in which isolation among output terminals is improved, whereby the quality of communication is improved. The multiport amplifier includes an input hybrid, an output hybrid, a plurality of amplifiers and a plurality of gain and phase control circuits that are inserted between the input hybrid and the output hybrid, a plurality of output coupling circuits that are inserted between the output hybrid and a plurality of output terminals so that they receive output extraction signals corresponding to a plurality of output signals, and a feedback circuit including a frequency selection circuit that is inserted between the plurality of output coupling circuits and the plurality of gain and phase control circuits. | 11-03-2011 |
20120128106 | RECEPTION CIRCUIT - A reception circuit is provided which can detect the beginning of data regardless of a preamble or a unique word contained or not in a received signal and regardless of coding systems for received signals. The reception circuit includes a correlation operation portion that performs a correlation operation to generate a correlation signal while sliding one symbol of reference signal in relation to a received signal. The reference signal goes to a high level during a first half symbol period and goes to a low level during a second half symbol period. The reception circuit further includes: a delay portion that outputs a delay signal by delaying the reference signal for a half symbol period in relation to the received signal; and a data beginning timing detection portion that detects a beginning peak timing for the correlation signal as a beginning timing of data contained in the delay signal. | 05-24-2012 |
20120319746 | ARRAY ANTENNA APPARATUS - An array antenna apparatus in which an SN ratio is improved. Antenna elements having transmission modules, respectively, are arranged in plurality, wherein the plurality of transmission modules respectively have transmission signal generators that each output a transmission intermediate frequency signal, local oscillation signal generators that each output a local oscillation signal, and transmission mixers that each mix the transmission intermediate frequency signal and the local oscillation signal with each other, thereby to carry out frequency conversion to a transmission high frequency signal. A reference signal source inputs a reference signal to the transmission signal generators and the local oscillation signal generators. The transmission intermediate frequency signal and the local oscillation signal are synchronized with each other by the reference signal. | 12-20-2012 |
20120326781 | TRANSMISSION MODULE AND PHASED ARRAY ANTENNA APPARATUS - A transmission module including a power supply voltage control unit that sets a power supply voltage to the high frequency amplifier in a variable manner, and a control circuit that controls an amplitude control unit, a phase control unit and the power supply voltage control unit. The control circuit and the power supply voltage control unit control the power supply voltage in accordance with an output power of the high frequency amplifier. The transmission module can carry out not only phase control but also amplitude control in a continuous manner, while suppressing amplitude and phase variation, and a high frequency amplifier in the transmission module is made highly efficient. In addition, a large directional gain, a low side lobe level and a low power consumption are achieved, as a phased array antenna apparatus using a transmission module. | 12-27-2012 |
20130214836 | FREQUENCY SYNTHESIZER - A phase difference detecting circuit | 08-22-2013 |
20140103996 | FRONT-END AMPLIFIER - A front-end amplifier has an impedance detector that detects an impedance seen looking into an antenna side from a power amplifier from a radio-frequency signal output from the power amplifier and a radio-frequency signal reflected from the antenna, in which a control circuit decides on whether the impedance detected by the impedance detector belongs to a specific region or not, and controls, if the impedance belongs to the specific region, at least one of the bias condition of the power amplifier and the impedance of a variable-matching circuit. | 04-17-2014 |
20140232467 | HIGH-FREQUENCY AMPLIFIER MODULE AND HIGH-FREQUENCY AMPLIFIER MODULE UNIT - A high-frequency amplifier module includes a driver-stage amplifier | 08-21-2014 |
20140300420 | ANALOG FEEDBACK AMPLIFIER - An analog feedback amplifier is capable of suppressing extraneous phase fluctuations and broadening a bandwidth by preventing effects of a group delay element by using an amplitude regulator | 10-09-2014 |
20150048887 | AMPLIFIER CIRCUIT - An amplifier circuit is configured in such a manner that the withstand voltage between the terminals of a FET | 02-19-2015 |