Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Patent
1991-04-01
1993-04-20
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
4552401, 4552411, 4552532, 370 953, H04B 106
Patent
active
052049779
ABSTRACT:
A radio receiver (107) including at least two amplifier (245, 247, 207) stages each having adjustable gain. The receiver (107) generates a first and a second control signal (267, 229). In absence of receiving an input signal, the receiver (107) adjusts the gain of at least the first of the at least two amplifier stages (207) with said first control signal (229). Upon generation of the second control signal (267) the gain of the first of the at least two amplifiers stages (207) is maintained at a constant level. The gain of a second of the at least two amplifier stages (247) is adjusted with said first control signal (229), producing an output signal (269). A predetermined amplitude of the output signal (269) is maintained while receiving an input signal.
REFERENCES:
patent: 3559088 (1969-08-01), Booth et al.
patent: 4574251 (1986-03-01), Jason
patent: 4757502 (1988-07-01), Meuriche et al.
patent: 4933986 (1990-06-01), Leitch
patent: 5081653 (1992-01-01), Saito
patent: 5086437 (1992-02-01), Tomita
Dailey Kirk W.
Eisenzopf Reinhard J.
Faile Andrew
Fisher John A.
Hackbart Roland R.
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