Patent ID: 8908575

Claim:
A frequency-division duplexing transceiver, comprising: a first mixer to up-convert a transmit signal; a first switch, coupled to the first mixer, to selectively provide a transmit local oscillator signal or a receive local oscillator signal to the first mixer, wherein the transmit local oscillator signal has a first frequency and the receive local oscillator signal has a second frequency distinct from the first frequency, and wherein the first switch is to provide the transmit local oscillator signal to the first mixer during a normal mode and a transmitter calibration mode; a second mixer to down-convert a receive signal; and a second switch, coupled to the second mixer, to selectively provide the transmit local oscillator signal or the receive local oscillator signal to the second mixer, wherein the second switch is to provide the transmit local oscillator signal to the second mixer during the transmitter calibration mode.