Coherent phase detector using a frequency discriminator

Details Coherent phase detector using a frequency discriminator Coherent phase detector using a frequency discriminator

1976-11-09

1978-01-31

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

325320, 325346, 329126, 329136, H03D 302, H04L 2714

Patent

active

040718298

ABSTRACT:
A coherent phase detector using a frequency discriminator for reducing a frequency encoded signal to baseband, thereby avoiding the necessity of generating a coherent RF phase reference signal. A baseband processor is provided to compensate for error components arising in the frequency discriminator output. The baseband processor includes feedback loops for DC level correction and automatic gain correction. A novel scheme is also described for reducing the influence of interbit crosstalk on the operation of the baseband processor.

REFERENCES:
patent: 3179748 (1965-04-01), Farrow
patent: 3501704 (1970-03-01), Webb
patent: 3636454 (1972-01-01), Pasternack et al.

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