Patent ID: 7483678

Claim:
A single chip GSM/EDGE transceiver, comprising: a receiver comprising a fully differential receive chain; a subharmonic mixer in the receive chain, the subharmonic mixer configured to receive a radio frequency (RF) input signal and a local oscillator (LO) signal that is phase-shifted by a nominal 45 degrees; a synthesizer comprising a voltage controlled oscillator and at least one frequency divider to generate desired transmit and receive LO signals, the synthesizer further comprising a phase combiner configured to develop the 45 degree nominally phase-shifted LO signal from a single voltage controlled oscillator (VCO); a transmitter having a closed power control loop; and a harmonic rejection modulator, the use thereof made possible by a frequency plan designed to allow the synthesizer to develop the transmit and receive LO signals without a frequency multiplier, wherein the receiver, synthesizer and transmitter are co-located on a common die.