Patent ID: 8787431
Filing Date: 2014-07-22
Classification: H03F,H04B

Abstract:
1. A transmitter which outputs a transmission signal, the transmitter comprising: a signal generation section for performing predetermined signal conversion processing on an input signal, and generating first I and Q signals, a phase signal representing a phase component of the input signal, and a first amplitude signal representing a magnitude of the input signal; an IQ mapping section for converting the phase signal into second I and Q signals; a first low-pass filter (LPF) for removing a spurious component from the second I and Q signals; a quadrature modulator for performing quadrature modulation on the second I and Q signals inputted via the first LPF, and outputting a radio frequency signal; an amplitude modulator for performing amplitude modulation on the radio frequency signal with the first amplitude signal, and outputting the transmission signal; and a compensation section for compensating for amplitude modulation/phase modulation (AM/PM) distortion contained in the transmission signal, based on the first I and Q signals, wherein the compensation section includes: