Low pass filter

Details Low pass filter Low pass filter

2006-04-04

2006-04-04

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S563000

Reexamination Certificate

active

07023263

ABSTRACT:
A low pass filter includes a differential amplifier including a positive input end, a negative input end, a positive output end, and a negative output end. A first resistive device is coupled between the negative input end and a first node. A second resistive device is coupled between the positive input end and the first node. A third resistive device substantially the same as the second resistive device is coupled between the negative input end and a second node. A fourth resistive device substantially the same as the first resistive device is coupled between the positive input end and the second node. A first capacitive device is coupled between the negative input end and the positive output end. Finally, a second capacitive device substantially the same as the first capacitive device is coupled between the positive input end and the negative output end.

REFERENCES:
patent: 5493246 (1996-02-01), Anderson
patent: 6369645 (2002-04-01), Takahashi
patent: 6437720 (2002-08-01), Yin et al.
patent: 6573785 (2003-06-01), Callucotte et al.
patent: 6583662 (2003-06-01), Lim
patent: 6707405 (2004-03-01), Kuttner
patent: 6833759 (2004-12-01), Sobel
patent: 2003/0146786 (2003-08-01), Gulati et al.

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