Repeater with feedback oscillation control

Details Repeater with feedback oscillation control Repeater with feedback oscillation control

1991-04-11

1992-03-10

Eisenzopf, Reinhard J.

Telecommunications

Carrier wave repeater or relay system

Monitoring

455 15, 455 33, 455 69, H04B 160, H04B 714, H04Q 702

Patent

active

050955284

ABSTRACT:
An apparatus for detecting excessive output power from a cellular radio telephone system booster includes input circuitry for receiving incoming radio frequency signals from a mobile source. Amplifiers are provided for amplifying the radio frequency signals either directly or by means of intermediate frequency channels. The output power amplifiers have variable gain. Circuitry detects when the transmitted radio frequency signals exceed a predetermine threshold and reduce the amplifier gain accordingly.

REFERENCES:
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patent: 4355414 (1982-10-01), Inoue
patent: 4578815 (1986-03-01), Persinotti
patent: 4613990 (1986-09-01), Halpern
patent: 4636741 (1987-01-01), Mitzlaff
patent: 4677687 (1987-06-01), Matsuo
patent: 4704734 (1987-11-01), Menich et al.
patent: 4731866 (1988-03-01), Muratani
patent: 4776032 (1988-10-01), Odute et al.
patent: 4811421 (1989-03-01), Havel et al.
patent: 4870696 (1989-09-01), Yorita
patent: 4870698 (1989-09-01), Katsuyama et al.

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