Radar transceiver

A radar transceiver comprising:

• a transmitter;
• a receiver including:
• a first amplifier having an output;
• a phase shifter having a first input configured to receive an oscillating signal and a second input configured to receive a control signal, the phase shifter having an output;
• quadrature (Q) channel circuitry including:
• a second amplifier having an input coupled to the output of the first amplifier;
• a signal generator having an input coupled to the output of the phase shifter, the signal generator having a quadrature (Q) channel output configured to output a quadrature phase version of the oscillating signal;
• a mixer having a first input coupled to the output of the second amplifier, and a second input coupled to the Q channel output of the signal generator;
• and
• a feedback path coupled to the transmitter and including a filter having an output and an input coupled to an output of the mixer, and an integrator having an input coupled to the output of the filter, the integrator having an output coupled to the second input of the phase shifter.

A radar transceiver comprising:

• a transmitter;
• and
• a receiver configured to:
• generate an amplified signal in a quadrature (Q) channel of the receiver based on received radar signals;
• receive an oscillating signal, and apply a phase shift to the oscillating signal to generate a phase-shifted oscillating signal in response to a control signal;
• generate an output signal that is a quadrature phase version of one of the oscillating signal and the phase-shifted oscillating signal;
• mix the output signal with the amplified signal to generate a mixed signal;
• apply a filter operation to the mixed signal to generate a filtered signal;
• and
• integrate the filtered signal to generate the control signal.