Patent ID: 7209720
Filing Date: 2007-04-24
Classification: H04B

Abstract:
1. A multiband transmitter circuit operative to receive a transmitter input signal and to produce a transmitter output signal at a frequency defined in at least one of a first band of frequencies, or a second band of frequencies, the multiband transmitter circuit comprising: at least a first oscillator circuit operative to produce a first output frequency signal defined within the first band of frequencies in response to the transmitter input signal; at least a first signal processing circuit operatively coupled to the first oscillator circuit, and operative to produce the transmitter output signal defined within the first band of frequencies in response to the first output frequency signal; at least a second oscillator circuit operative to produce a second output frequency signal defined within the second band of frequencies in response to the transmitter input signal; at least a second signal processing circuit operatively coupled to the second oscillator circuit, and operative to produce the transmitter output signal defined within the second band of frequencies in response to the second output frequency signal; the first oscillator circuit further comprising a first voltage controlled oscillator (VCO) operative to produce a first VCO output frequency signal defined within the first band of frequencies in response to the transmitter input signal, and the second oscillator circuit further comprising a second VCO operative to produce a second VCO output frequency signal defined within the second band of frequencies in response to the transmitter input signal; and a synthesizer operative to receive the first and second VCO output frequency signals, wherein the synthesizer is operative to provide the transmitter input signal to the first and second VCOs.