Methods and apparatus to test RADAR integrated circuits

A method to test a radar circuit including an oscillator, a transmitter, and multiple receivers, the method comprising:

• generating, by the oscillator, a frequency modulated continuous waveform (FMCW);
• modulating, by the transmitter, the FMCW to produce a modulated FMCW;
• transmitting, by the transmitter, the modulated FMCW to a transmission network;
• processing, by the transmission network, the modulated FMCW to generate an internal signal;
• outputting, by the transmission network, a receiver input signal for each of the multiple receivers based on the internal signal;
• outputting, by each of the multiple receivers, a corresponding output signal based on the corresponding receiver input signal;
• and
• comparing each output signal to an expected output signal for the corresponding receiver.

An apparatus to test a radar circuit that includes an oscillator, a transmitter, and a receiver, the apparatus comprising:

• a modulator manager configured to:
• cause the oscillator to generate a frequency modulated continuous waveform (FMCW);
• cause the transmitter to modulate the FMCW to output a modulated FMCW;
• cause the transmitter to transmit the modulated FMCW via a transmission network to obtain an output signal from the transmission network;
• cause the receiver output a receiver FMCW in response to the output signal;
• and
• a signal analyzer configured to compare the receiver FMCW with an expected FMCW for the receiver with respect to a performance characteristic of the radar circuit.