Selective filter having linear phase

Details Selective filter having linear phase Selective filter having linear phase

2004-03-12

2008-08-19

Mai, Tan V (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical analog calculating computer

Particular function performed

Reexamination Certificate

active

07415495

ABSTRACT:
A method for determining a filter that is very selective and having linear phase is described. The method starts with choosing a pole constellation in the complex frequency plane in a unique manner so that a desired passband phase of the filter is linear while preserving the desired magnitude. The method seeks to design filters that have ideal responses in both gain and phase or gain and time. This process is done methodically by finding locations of poles that yield sensible compromises between the extremes. It also makes full use of well-known traditional characteristics of the filters at the extremes.

REFERENCES:
patent: 5283507 (1994-02-01), Stitt et al.
patent: 5325188 (1994-06-01), Scarpa
patent: 6314444 (2001-11-01), Minuhin et al.

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