Selective call receivers with stepwise variable gain control

Details Selective call receivers with stepwise variable gain control Selective call receivers with stepwise variable gain control

1996-03-27

1998-03-31

Mullen, Thomas

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

330282, 4552491, H04B 106

Patent

active

057349746

ABSTRACT:
A receiver (100) for receiving an input signal and generating an output signal therefrom has a switchable gain circuit (104) with a stepwise variable gain control (118), a local oscillator (106) and an automatic gain control (AGC) detector (114) with a response for detecting a level of the output signal and generating an AGC signal indicative of the level of the output signal and a state machine (116) being responsive to the AGC signal generating a control signal at the stepwise variable gain control to increase or decrease a gain of the switchable gain circuit in discrete stepwise steps.

REFERENCES:
patent: 5036527 (1991-07-01), Halim et al.
patent: 5051707 (1991-09-01), Fujita

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