Adaptive linearization technique for communication building...

Details Adaptive linearization technique for communication building... Adaptive linearization technique for communication building...

2006-02-21

2006-02-21

Mottola, Steven J. (Department: 2817)

Amplifiers

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

C330S084000

Reexamination Certificate

active

07002410

ABSTRACT:
The present invention is directed to a linearization apparatus and method. Preferred embodiments according to the present invention can combine an auxiliary non-linear block to a functional block of a system to increase linearity of an output signal of the system such as a communication system. System overhead due to the non-linear auxiliary block can be small because of circuit structure, cost and low consumption. Further, the non-linear auxiliary block can be designed so that no feedback path is required. Further preferred embodiments can use a feedback path without loss of stability by using a cancellation apparatus or process based on an averaging detection of the output signal. For example, a feedback loop can detect power leakage in a sideband caused by non-linearities of the communication system.

REFERENCES:
patent: 3970953 (1976-07-01), Walker et al.
patent: 5508657 (1996-04-01), Behan
patent: 5610554 (1997-03-01), Anvari
patent: 6211734 (2001-04-01), Ahn
patent: 6292055 (2001-09-01), Chabas

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