System and method for optimized receiver performance in a...

Details System and method for optimized receiver performance in a... System and method for optimized receiver performance in a...

2007-02-21

2008-12-16

Le, Thanh C (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S324000

Reexamination Certificate

active

07466972

ABSTRACT:
The present disclosure relates generally to systems and methods for optimized receiver performance in a low intermediate frequency (IF) architecture for EDGE (Enhanced Data rates for GSM Evolution). In one example, a method includes mixing a received analog signal with a local oscillator signal to create a mixed signal having an intermediate frequency between 101 kHz and 199 kHz. The mixed signal is compensated to minimize a direct current (DC) component introduced into the mixed signal by the local oscillator signal and an interferer image portion of the mixed signal is rejected. DC introduced into the mixed signal is minimized before final downconverting of the mixed signal, and DC remaining at the intermediate frequency after downconverting the mixed signal is minimized.

REFERENCES:
patent: 7203476 (2007-04-01), Ruelke et al.
patent: 2001/0040932 (2001-11-01), Lindquist et al.
patent: 2002/0151289 (2002-10-01), Rahman et al.
patent: 2008/0153447 (2008-06-01), Cowley et al.

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