INTEGRATED MULTIPLE-UP/DOWN CONVERSION RADAR TEST SYSTEM

摘要

A radar test system for testing the performance of an automotive radar system includes circuitry for multiple down and up conversions of a signal from the automotive radar. Conditioning circuitry is further included to delay an intermediate frequency signal (IF2) obtained after the second down conversion to simulate the delay of a return signal from an object located a particular distance from the automotive radar system, and to attenuate the IF2 signal to simulate variable target sizes, and to generate a Doppler shift in the IF2 signal to simulate target speed. The conditioned signal is up-converted and transmitted back to the automotive radar system to determine if the automotive radar provides accurate readings for distance, size and speed. The radar test system further couples the second IF signal to a spectrum analyzer for determining if the automotive radar system is operating in the desired bandwidth and to a power meter for determining if the automotive radar system is transmitting at a desired power level.