Radar transceiver with phase noise cancellation

A radar transceiver, comprising:

• a local oscillator (LO) operably generating a radio frequency (RF) oscillator signal that includes phase noise;
• at least one transmit antenna coupled to the LO, for transmitting the RF oscillator signal to a radar channel;
• at least one receive antenna for receiving a first RF radar signal from the radar channel,
• the first RF radar signal including at least one radar echo of the RF oscillator signal and a short-range (SR) leakage signal caused by a SR target, and
• the SR target being associated with a round-trip delay time (RTDT) that is greater than a delay associated with an artificial radar target;
• the artificial radar target coupled to the LO and configured to receive the RF oscillator signal, and composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate a second RF radar signal;
• a modulator, coupled to the artificial radar target, to:
• receive the second RF radar signal, and
• modulate the second RF radar signal with a modulation signal to generate a frequency-shifted RF radar signal;
• and
• an RF subtractor circuit coupled to the at least one receive antenna and the modulator, and configured to subtract the frequency-shifted RF radar signal from the first RF radar signal.