Variable impedance load for a variable gain radio frequency...

Details Variable impedance load for a variable gain radio frequency... Variable impedance load for a variable gain radio frequency...

2006-09-26

2006-09-26

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S148000, C330S278000

Reexamination Certificate

active

07113033

ABSTRACT:
A variable impedance load (104) is provided at the output of a radio frequency (RF) driver amplifier (102) having a variable gain. In an exemplary embodiment, the variable load (104) comprises a resistor (R) in series with a semiconductor device (M1). The semiconductor device (M1) has an impedance level determined by a drive current. The value of the drive current is related to the gain of the RF driver amplifier (102).

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