| 摘要 |
A PSK demodulator is equipped with a phase lock detector (9), comprising a reverse modulator (11), and a comparison section (12,13,14). The result of the comparison between the received modulated signal and the reverse modulated signal, is used to detect carrier lock. The carrier lock signal controls the bandwidth of the carrier recovery loop (1,3,4,8) and a sweep generator (7). <IMAGE> |
