Published:2009/7/3 3:42:00 Author:May | From:SeekIC
Low-cost TTL ICs are connected to form phase-locked Ioop narrow-band FM demodulator. With value shown for C, circuit is suitable for IF value around 470 kHz. Article covers advantages of synchronous detection and various direct conversion techniques involving phase-locked loop.-P. Hawker、 synchronous Detection in Radio Reception, Wireless World, Nov.1972,p 525-528
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