Quadrature filter with real conversion

Details Quadrature filter with real conversion Quadrature filter with real conversion

1992-08-14

1996-05-07

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375229, 36472419, 3647241, H04B 110

Patent

active

055154026

ABSTRACT:
A quadrature decimation filter with real output formed from a mixture of both in-phase and quadrature signals by upconversion and alternating stream combination. The in-phase and quadrature branch computations run simultaneously with a delay of the in-phase data stream relative to the quadrature data stream so that a common filter coefficient may be used simultaneously in nonzero branch computations.

REFERENCES:
patent: 4344149 (1982-08-01), Van de Meeberg
patent: 4757516 (1988-07-01), Yoshimoto et al.
patent: 4843581 (1989-06-01), Cupo et al.
patent: 4893265 (1990-01-01), Hirosaki
patent: 5051981 (1991-09-01), Kline
patent: 5067141 (1991-11-01), Chitchlow et al.

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