Automatic-gain-control circuit compensating for changes in gain

Details Automatic-gain-control circuit compensating for changes in gain Automatic-gain-control circuit compensating for changes in gain

1997-01-15

1998-09-22

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330279, 330289, 4552342, H03G 330

Patent

active

058120254

ABSTRACT:
According to a first aspect of the invention, an automatic-gain-control circuit, which generates a control signal that controls the gain of a variable-gain element, modifies the control signal to compensate for changes in the gain control characteristic of the variable-gain element. According to a second aspect of the invention, the automatic-gain-control modifies a fixed value which is added to cancel a direct-current offset, the modification being made in response to changes in the gain control characteristic of the variable-gain element.

REFERENCES:
patent: 5617060 (1997-04-01), Wilson et al.
Soeya et al., "Direct Conversion Receiver with Baseband AGC," Paper from the 1993 Spring Meeting of the Institute of Electronics, Information, and Communication Engineers of Japan, pp. 2-323.

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