Pilot tone controlled adaptive amplitude equalizer

Details Pilot tone controlled adaptive amplitude equalizer Pilot tone controlled adaptive amplitude equalizer

1975-10-06

1977-01-11

Gensler, Paul L.

Wave transmission lines and networks

Pilot current-controlled systems

325 62, 333 18, H04B 310

Patent

active

040030067

ABSTRACT:
An adaptive equalizer to compensate for the effects of frequency-selective fading on a microwave radio system. The equalizer includes two Bode-type bump networks and an AGC amplifier whose slope and gain are respectively controlled by pilot tones added to the message load. Importantly, the frequency characteristics of the two Bode networks are non-overlapping, thus ensuring stability.

REFERENCES:
patent: 2054657 (1936-09-01), Mayer
patent: 2607851 (1952-08-01), Pfleger
patent: 2719270 (1955-09-01), Ketchledge
patent: 3573667 (1971-04-01), Kao et al.
patent: 3758881 (1973-09-01), Rummler
patent: 3763359 (1973-10-01), Cho et al.
Babler, G. M., "A Study of Frequency Selective Fading etc.," BSTJ, vol. 51, Mar. 1972, pp. 731-757.
Angell, E. H., L5 System: Repeatered Line, BSTJ, vol. 51, Mar. 1972, pp. 1935-1985.

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