Programmable radio frequency predistortion linearizer and...

Details Programmable radio frequency predistortion linearizer and... Programmable radio frequency predistortion linearizer and...

2005-09-20

2005-09-20

Mottola, Steven J. (Department: 2817)

Amplifiers

Hum or noise or distortion bucking introduced into signal...

C330S283000

Reexamination Certificate

active

06946908

ABSTRACT:
A radio frequency (RF) predistortion linearizer with a transistor and a control circuit, an input matching circuit and an output matching circuit. The control circuit is electrically coupled to a control voltage source that supplies control voltages via a control node. A resistor and a coupling inductor electrically couples the control circuit to the control node to receive the control voltages. These control voltages set two varactors of the control circuit to provide a capacitance. The capacitance and an inductance provided by an inductive block of the control circuit can thus provide a resonant frequency. This resonant frequency is thus controllable and is based on a centre frequency of an RF input signal provided to an input node of the RF predistortion linearizer.

REFERENCES:
patent: 6111477 (2000-08-01), Klymyshyn et al.
patent: 6724253 (2004-04-01), Hau et al.

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