Gain control circuit and method for providing gain control of a

Details Gain control circuit and method for providing gain control of a Gain control circuit and method for providing gain control of a

1998-05-29

1999-10-05

Mottola, Steven J.

Amplifiers

With pilot frequency control means

330136, 330137, H03F 366, H03G 320

Patent

active

059630876

ABSTRACT:
The present invention provides for a gain control circuit (10) and method for providing gain control of a variable amplification circuit (16) using a pilot signal. A pilot signal is added to the received signal. The pilot signal has at least a minimum signal level which when added to the signal received insures the sampled input signal has a level above the point where offset or low power errors are experienced. Preferably the pilot signal will be a sinusoidal signal having a frequency within the operational bandwidth of the amplifier (16), but outside the frequency range of the input signal.

REFERENCES:
patent: 2974224 (1961-03-01), Ule
patent: 3378786 (1968-04-01), Andrea
patent: 5617240 (1997-04-01), Hergault et al.

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