Reducing noise and distortion in a receiver system

Details Reducing noise and distortion in a receiver system Reducing noise and distortion in a receiver system

2007-02-13

2007-02-13

Trinh, Sonny (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S283000, C455S296000

Reexamination Certificate

active

10711680

ABSTRACT:
A receiver, implemented with low noise and low distortion, to process an input signal containing signals of interest and unwanted interference signal. In an embodiment, the receiver contains a mixer which generates an intermediate signal in the form of an electric current, and a filter which filters the unwanted interference signals from the intermediate signal. The intermediate signal is centered around a lower frequency compared to a carrier frequency of the input signal. Due to the current mode interface between the mixer and the filter circuit, low noise and low distortion may be attained.

REFERENCES:
patent: 5872540 (1999-02-01), Casabona et al.
patent: 6005506 (1999-12-01), Bazarjani et al.
patent: 6240150 (2001-05-01), Darveau et al.
patent: 6373909 (2002-04-01), Lindquist et al.
patent: 6998908 (2006-02-01), Sternowski
patent: 2004/0152437 (2004-08-01), Behzad
patent: 2004/0176034 (2004-09-01), Hunter et al.
patent: 2004/0264602 (2004-12-01), Lewis

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