Programmable filter

Details Programmable filter Programmable filter

2007-01-09

2007-01-09

Nguyen, Simon (Department: 2618)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C455S191100, C455S307000, C455S340000, C375S350000

Reexamination Certificate

active

10894507

ABSTRACT:
A filter wherein the poles and zeroes are programmable in a high speed control loop to form a particular desired filter profile. The control loop retrains the filter's poles and zeroes during the “off” time between the reception or transmission time slots. Desired pole and zero frequencies are injected and peak values are stored in sample and hold circuits. This eliminates variations from voltage supplies, component tolerance, temperature, aging, etc.

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