On-chip high-pass filter with large time constant

Details On-chip high-pass filter with large time constant On-chip high-pass filter with large time constant

2005-04-19

2005-04-19

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S559000

Reexamination Certificate

active

06882216

ABSTRACT:
An on-chip high-pass filter with large time constant comprising a capacitor, a first transistor having a first terminal connected to a first voltage source and a second terminal connected to the capacitor, and a second transistor having a first terminal connected to the second terminal of the first transistor and a second terminal connected to ground, wherein the first transistor and the second transistor are for operating as a large-resistance resistor. The electrical equivalent large-resistance resistor and the capacitor together form a high-pass filter between the input port and the output port.

REFERENCES:
patent: 4924115 (1990-05-01), Yazdy
patent: 5999043 (1999-12-01), Zhang et al.
patent: 6091289 (2000-07-01), Song et al.
patent: 6437639 (2002-08-01), Nguyen et al.
patent: 6559715 (2003-05-01), Frake et al.

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