Phaselock receiver with input signal measuring capability

Details Phaselock receiver with input signal measuring capability Phaselock receiver with input signal measuring capability

1982-01-18

1984-10-23

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

375 10, 375 98, 455246, 455265, H04B 1700, H04B 116

Patent

active

044792530

ABSTRACT:
In a communications receiver where the AGC signal derived from a phaselock detector is used to measure input signal strength, and that measurement is subject to error as a result of the nonlinear devices used in the carrier demodulation, a signal having inversely corresponding error characteristics is summed to the phaselock detector AGC signal to produce an improved AGC signal which is substantially linearly related to the input signal. That signal, having the inversely corresponding error characteristics, has been found to be the signal representation of the envelope of either the positive or negative cycles of the input signal.

REFERENCES:
patent: 3821649 (1974-06-01), Grosjean
patent: 4048566 (1977-09-01), Carson et al.
patent: 4186351 (1980-01-01), Brefini et al.
patent: 4213096 (1980-07-01), Daniel
patent: 4225976 (1980-09-01), Osborne et al.
patent: 4270221 (1981-05-01), Daniel, Jr.
patent: 4317206 (1982-02-01), Nossen
F. M. Gardner, Phaselock Techniques, 1966, pp. 52-53, 90-100.

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