Amplifier arrangement with controllable gain and method for...

Details Amplifier arrangement with controllable gain and method for... Amplifier arrangement with controllable gain and method for...

2006-09-27

2008-11-04

Choe, Henry K (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S136000

Reexamination Certificate

active

07446605

ABSTRACT:
An amplifier arrangement with controllable gain includes a first and a second amplifier device which each have a control input to receive a control signal to adjust a gain factor of the respective amplifier device. A control device is provided which is coupled to the second amplifier device to derive an effective gain factor of the second amplifier device as a function of the control signal. The control device further includes a control output coupled to the respective control inputs of the first and the second amplifier device to provide the control signal depending on a desired gain factor and the effective gain factor.

REFERENCES:
patent: 6288608 (2001-09-01), Jadus et al.
patent: 6636114 (2003-10-01), Tsutsui et al.
patent: 6798287 (2004-09-01), Wu et al.
patent: 7248845 (2007-07-01), Dunn
patent: 2005/0032499 (2005-02-01), Cho

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