| Patent application number | Description | Published |
|---|
| 20100240331 | POWER AMPLIFYING CIRCUIT, AND TRANSMITTER AND WIRELESS COMMUNICATION DEVICE USING THE SAME - To provide a power amplifier circuit which is capable of reducing a phase error of an output signal in a case where an amplitude of an input signal is relatively small, as well as a transmitter and a wireless communication device using the same. A constant envelope signal generation circuit ( | 09-23-2010 |
| 20100240332 | POWER AMPLIFIER CIRCUIT, AND TRANSMITTER AND WIRELESS COMMUNICATION DEVICE USING THE SAME - To provide a power amplifier circuit, which is capable of amplifying a signal having envelope variation with high power added efficiency, and exhibits low power consumption and high versatility, as well as to provide a transmitter and a wireless communication device using the power amplifier circuit, the power amplifier circuit includes: a constant envelope signal generation circuit ( | 09-23-2010 |
| 20110001541 | POWER AMPLIFICATION DEVICE AND COMMUNICATION DEVICE - In a case where two constant envelope signals corresponding to an input signal are generated through analog signal processing, variation in detection sensitivities of amplitudes of those signals is suppressed. At least one of a mixer ( | 01-06-2011 |
| 20110130106 | POWER AMPLIFICATION DEVICE, AND TRANSMISSION DEVICE AND COMMUNICATION DEVICE BOTH USING THEREOF - To provide a power amplification device having a function of preventing deviation of the amplitude and phase of an output signal having amplified envelope variation from a predetermined value, and a transmission device and a communication device both using the same. A power amplification device comprises a variable phase shifter circuit ( | 06-02-2011 |
| 20110140761 | POWER AMPLIFICATION DEVICE, AND TRANSMISSION DEVICE AND COMMUNICATION DEVICE USING SAME - To provide a power amplification device that can amplify an input signal having an envelope variation with high power-added efficiency in a wide frequency range, and a transmission device and a communication device using the power amplification device. A first orthogonal signal (Sd | 06-16-2011 |
| 20110223871 | ADDER, AND POWER COMBINER, QUADRATURE MODULATOR, QUADRATURE DEMODULATOR, POWER AMPLIFIER, TRANSMITTER AND WIRELESS COMMUNICATOR USING SAME - To provide an adder capable of obtaining an addition signal of a plurality of high frequency signals, and also a power combiner, a quadrature modulator, a quadrature demodulator, a power amplifier, a transmitter, and a wireless communicator, each of which uses the adder. Impedances (Zg, Zh) seen from a common output point (P | 09-15-2011 |
| 20110256839 | ADDITION CIRCUIT, POWER AMPLIFIER CIRCUIT USING SAME, AND TRANSMISSION DEVICE AND COMMUNICATION DEVICE USING THE POWER AMPLIFIER CIRCUIT - Disclosed are an addition circuit that makes it possible to add two vector signals in a high-frequency region, a power amplifier circuit using the same, and a transmission device and communication device using the power amplifier circuit. Disclosed is an addition circuit, wherein first through fourth multipliers ( | 10-20-2011 |
| 20110285446 | POWER AMPLIFICATION DEVICE AND COMMUNICATION DEVICE - In a case where two constant envelope signals corresponding to an input signal are generated through analog signal processing, variation in detection sensitivities of amplitudes of those signals is suppressed. At least one of a mixer ( | 11-24-2011 |
