Amplification system having mask detection and bias compensation

Details Amplification system having mask detection and bias compensation Amplification system having mask detection and bias compensation

1998-10-19

2000-10-31

Pascal, Robert

Amplifiers

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

330151, 327359, H03F 126

Patent

active

061408743

ABSTRACT:
A method and apparatus for reducing out-of-band frequency components of an RF signal having a carrier frequency which is not known in advance employ a control signal to vary adjustable bias parameters of the circuit. In particular embodiments, the RF signal is generated from a MOSFET power amplifier, which introduces distortion components into its output signal. Bias parameters of the MOSFET amplifier can be varied to reduce out-of-band frequency components, that is, out-of-band distortion. In addition, other elements of the network can be controlled by varying bias parameters, for example, a predistorter.

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patent: 5808512 (1998-09-01), Bainvoll et al.
patent: 5912586 (1999-06-01), Mitzlaff
patent: 5923214 (1999-07-01), Mitzlaff
European Search Report.

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