Patent ID: 8625708

Claim:
A transmission circuit configured to transmit over a plurality of transmission signal bands, comprising: a polar converter configured modulate an amplitude of an input signal to generate an amplitude modulated signal and to modulate a phase of the input signal to generate a phase modulated signal; a digitally controlled oscillator (DCO) configured to generate a DCO signal having a DCO frequency that depends upon the phase modulated signal; one or more frequency dividers configured to selectively generate one or more reduced frequency signals by selectively dividing the DCO signal; a clock selection circuit configured to receive one of the reduced frequency signals and based thereupon to generate a sampling frequency; a digital to analog converter (DAC) configured to receive the sampling frequency from the clock selection circuit and to sample a digital amplitude modulated signal at the sampling frequency to generate an analog amplitude modulated signal; and a mixer configured to combine the analog amplitude modulated signal and the phase modulated signal to generate an output signal having a frequency that is outside of the downlink frequencies of other signals within the plurality of transmission signal bands.