Phase locked loop, as for MPSK signal detector

Details Phase locked loop, as for MPSK signal detector Phase locked loop, as for MPSK signal detector

1982-04-21

1984-03-27

Heyman, John S.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329124, 375 81, 375 85, H03D 318, H03D 324

Patent

active

044397372

ABSTRACT:
Oscillators phase locked to transitions in the envelope of a bandwidth-limited complex waveform are used, for example, in detecting MPSK signals. The magnitude of the envelope is approximated by linearly combining the real and imaginary components of the complex waveform, or by selecting the larger of the two components, or by using both these techniques in combination.

REFERENCES:
patent: 3792364 (1974-02-01), Ananias
patent: 4143322 (1979-03-01), Shimamura
patent: 4318049 (1982-03-01), Mogensen
patent: 4344178 (1982-08-01), Waters
patent: 4359692 (1982-11-01), Ryan
patent: 4384357 (1983-05-01), De Buda et al.

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