Patent ID: 7821318

Claim:
A wireless transceiver comprising: a mixer that includes: a first differential input pair that includes first and second transistors, each having a control terminal that respectively receives first and second signals of a differential oscillator signal, wherein the differential oscillator signal is one of a first phase and a second phase; a second differential input pair that includes first and second transistors, each having a control terminal that respectively receives the first and second signals of the differential oscillator signal; first and second bias transistors that receive a first signal of a differential input signal, and that respectively communicate with first terminals of the first and second transistors of the first differential input pair, wherein the differential input signal is the one of the first phase and the second phase; third and fourth bias transistors that receive a second signal of the differential input signal, and that respectively communicate with first terminals of the first and second transistors of the second differential input pair; a first capacitive element having first and second ends that respectively communicate with the first terminals of the first and second transistors of the first differential input pair; a second capacitive element having first and second ends that respectively communicate with the first terminals of the first and second transistors of the second differential input pair; and four current sourcing elements that respectively communicate with first terminals of the first, second, third, and fourth bias transistors; and a frequency divider that provides the differential oscillator signal, wherein the frequency divider includes: a first frequency divider differential input pair; a second frequency divider differential input pair; and a circuit that communicates with second terminals of the first and second transistors of the first and second frequency divider differential input pairs, and that outputs first and second signals of a differential first phase signal and first and second signals of a differential second phase signal, wherein the differential first phase signal and the differential second phase signal have a phase difference of ninety degrees, wherein the differential oscillator signal is one of the differential first phase signal and the differential second phase signal.