A METHOD OF DETECTION OF RADAR SIGNAL

摘要

The method detects a police radar signal checking the overspeed of a vehicle in a highway. A diode(1) biased by a battery in the car generates 11.558GHz microwave which is mixed with the second high frequency wave 23.116 GHz generated by an oscillation cavity(12) to produce 1.033GHz IF signals for X-band 1.558GHz and K-band 23.116GHz respectively. A detector(10) receives 33MHz signals subtracted from a mixer(7) and drives LED(11).