Patent ID: 8417192

Claim:
A radio frequency (RF) transceiver, comprising: a signal generator configured to output a first signal and a second signal, wherein the first signal comprises a local oscillator signal and a frequency of the second signal is derived from a frequency of the first signal; a frequency multiplier circuit configured to upconvert the first and second signals output by the generator by frequency multiplication, and to output an upconverted first signal and an upconverted second signal as separate signals; a receiver circuit configured to process a received signal using the upconverted first signal; a transmitter circuit configured to provide the upconverted second signal to a transmitter channel; and a switching device configured to provide the upconverted first signal to the receiver circuit and the upconverted second signal to the transmitter circuit, wherein the transmitter circuit comprises: an input hybrid device; an output hybrid device having a first output coupled to a first transmitter channel and a second output coupled to a second transmitter channel; a plurality of switches configured to provide the upconverted transmit signal between first and second inputs of the input hybrid device; a first pair of hybrid devices, each having an input coupled to a respective output of the input hybrid device; a second pair of hybrid devices, each having an output coupled to a respective input of the output hybrid device; and at least one amplifier coupled between respective outputs of the first pair of hybrid devices and respective inputs of the second pair of hybrid devices, wherein the transmitter circuit is configured to provide the upconverted second signal to one of the first and second outputs of the output hybrid device.