Method and apparatus for downconverting a plurality of frequency modulated signals from a carrier frequency to baseband

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.