SIGNAL_POWERED_TRANSPONDER

Published:2009/7/16 5:30:00 Author:Jessie | From:SeekIC

Power received at frequency of tuned antenna circuit energizes crystal transistor stage, to make it oscillate at a different frequency. Can be used in aircraft or vehicle to make it radiate position-determining signal when interrogated by powerful transmitter at base station. –L. R. Crump, Radio Waves Power Transistor Circuits, Electronics, 31:19, p 63-65.



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