Noise suppression circuit

Details Noise suppression circuit Noise suppression circuit

2005-01-31

2008-12-02

Le, Don P (Department: 2819)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S181000

Reexamination Certificate

active

07459995

ABSTRACT:
A small-sized noise suppression circuit capable of suppressing noise in a wide frequency range is realized. A noise suppression circuit has first and second inductors inserted in series in a first conductive line, and a series circuit configured to have a third inductor and a first capacitor connected in series. One end of the series circuit is connected to a junction of the first and second inductors and the other end is connected to a second conductive line. Even when a coupling coefficient k between the first and second inductors is smaller than 1, by adjusting the value of the inductance of the third inductor in accordance with the value of the coupling coefficient k, an attenuation characteristic which is almost the same as or similar to that in an ideal state is obtained.

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