Patent ID: 7715808
Filing Date: 2010-05-11
Classification: H03C,H03F

Abstract:
1. A polar modulating circuit comprising: a polar coordinate converting unit for generating an amplitude signal on the basis of baseband orthogonal signals generated from transmitted data; an amplitude modulating unit for generating an amplitude-modulated signal on the basis of the amplitude signal; a phase modulating unit for generating a phase-modulated signal in a radio frequency band on the basis of a signal having at least a phase component of the baseband orthogonal signals; an amplifying unit for generating transmitted data in the radio frequency band by receiving the phase-modulated signal as an input high frequency signal and amplitude- modulated signal as a control signal; a delay quantity determining unit for storing delay quantity information for correcting a delay difference between paths of the amplitude signal and the phase signal according to an amplitude value of the amplitude signal or transmission level information indicative of a radio transmission level of the transmitted data; and a delay adjusting unit for giving a delay to the amplitude signal or the signal having at least the phase component on the basis of the delay quantity information.