Patent ID: 8301099

Claim:
A circuit comprising: a first antenna; a second antenna; a first receive path configured to receive a first signal from the first antenna, wherein the first receive path comprises (i) a Voltage Controlled Oscillator, and (ii) a first mixer configured to receive a first input signal from the Voltage Controlled Oscillator; and a second receive path configured to receive a second signal from the second antenna, wherein the second receive path comprises a second mixer, wherein the second mixer is configured to receive a second input signal from the Voltage Controlled Oscillator, wherein the first input signal from the Voltage Controlled Oscillator tunes the first mixer to (i) a first phase and (ii) a first frequency, and the second input signal from the Voltage Controlled Oscillator tunes the second mixer to (i) a second phase and (ii) a second frequency, wherein the first phase is substantially equal to the second phase, wherein the first frequency is substantially equal to the second frequency, wherein the Voltage Controlled Oscillator is coupled to the second mixer through an output differential buffer, and wherein a coupling between the first mixer and the Voltage Controlled Oscillator does not include a differential buffer.