Low-pass filter

Details Low-pass filter Low-pass filter

2008-12-04

2011-10-04

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S552000, C327S558000, C327S337000, C327S156000

Reexamination Certificate

active

08030992

ABSTRACT:
A low-pass filter of the present invention comprises a plurality of filter units and a regulation unit. The filter units are coupled in series with each other and receive an input signal to filter the input signal for generating an output signal. The regulation unit is coupled to the filter units to regulate voltage levels of the filter units. The low-pass filter of the present invention can be integrated within the integrated circuit and reduce the prime cost.

REFERENCES:
patent: 5708573 (1998-01-01), Lusher et al.
patent: 6466146 (2002-10-01), Huang
patent: 7471140 (2008-12-01), Salerno
patent: 2004/0155702 (2004-08-01), Danielsson

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