Low-pass filter and low-pass filter array

Details Low-pass filter and low-pass filter array Low-pass filter and low-pass filter array

2007-03-19

2008-10-28

Tan, Vibol (Department: 2819)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S174000, C333S185000

Reexamination Certificate

active

07443267

ABSTRACT:
A low-pass filter comprises a capacitor, first and second varistors, a resistor, and first to third external electrodes. The capacitor includes a dielectric body and first to third internal electrodes. The first internal electrode is connected to the third external electrode physically and electrically. The second internal electrode is connected to the second external electrode physically and electrically. At least a portion of the second internal electrode opposes the first internal electrode through at least a portion of the dielectric body. The third internal electrode is connected to the first external electrode physically and electrically. At least a portion of the third internal electrode opposes the first internal electrode through at least a portion of the dielectric body. The first varistor is connected in parallel to a capacitor constituted by the first and third internal electrodes. The second varistor is connected in parallel to a capacitor constituted by the first and second internal electrodes. The resistor is connected electrically to the second and third internal electrodes.

REFERENCES:
patent: 2006/0077646 (2006-04-01), Ahn et al.
patent: 2007/0252659 (2007-11-01), Suenaga et al.
patent: A 10-191555 (1998-07-01), None

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