Variable gain amplifier device

Details Variable gain amplifier device Variable gain amplifier device

2006-06-20

2006-06-20

Escalante, Ovidio (Department: 2645)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S241100, C330S252000

Reexamination Certificate

active

07065334

ABSTRACT:
A variable gain amplifier device controlled by a first gain control signal comprises a gain controlled amplifier having a gain and including a differential pair of first and second MOS type transistors configured to operate in a weak inversion region; and a control signal converter configured to convert the first gain control signal into a second gain control signal, and supply the second gain control signal to the gain controlled amplifier to exponentially vary the gain with respect to the first gain control signal.

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