Quadratic amplitude control circuit for cosite interference...

Details Quadratic amplitude control circuit for cosite interference... Quadratic amplitude control circuit for cosite interference...

2011-08-15

2011-12-27

Nguyen, Hai L (Department: 2816)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S307000, C455S340000, C455S296000

Reexamination Certificate

active

08086206

ABSTRACT:
A quadratic amplitude matching system and associated method with an associated tuning control system is provided for continuously and automatically tuning a quadratic amplitude matching filter (QAMF) to a band center of an interfering signal to provide improved rejection of an interfering signal coupled from a transmission antenna into a local receive antenna in the presence of local multi-path, thereby providing improved interference cancellation system performance. The matching control system is provided as an element of an interference cancellation system.

REFERENCES:
patent: 6693971 (2004-02-01), Kowalski
patent: 7299027 (2007-11-01), Sudo
patent: 7310507 (2007-12-01), Mizumasa et al.
patent: 7450924 (2008-11-01), Mostafa et al.
patent: 7515895 (2009-04-01), Vorenkamp et al.
patent: 7672657 (2010-03-01), Cowley et al.
patent: 8023921 (2011-09-01), Lackey

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