Radar device with noise cancellation

A radar device comprising:

• an RF transceiver configured to transmit an RF oscillator signal to a radar channel and receive a respective first RF radar signal from the radar channel;
• an artificial radar target composed of circuitry that provides a gain and a delay to the RF oscillator signal to generate a second RF radar signal;
• a first frequency conversion circuit that includes a first mixer configured to down-convert the first RF radar signal;
• a second frequency conversion circuit that includes a second mixer configured to down-convert the second RF radar signal;
• an analog-to digital conversion circuitry configured to digitize the down-converted first RF radar signal and the down-converted second RF radar signal to generate a first digital signal and a second digital signal, respectively;
• a digital signal processing circuitry configured to receive the first and second digital signals, and further configured to:
• estimate a phase noise signal included in the second digital signal, the phase noise signal approximating phase noise in the radar channel associated with short-range leakage;
• generate a cancellation signal based on the estimated phase noise signal;
• and
• subtract the cancellation signal from the first digital signal to obtain a noise compensated digital radar signal.