Title:
ノイズ抑制回路
Document Type and Number:
Japanese Patent JP4483863
Kind Code:
B2
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.
Inventors:
Mitsuru Suzuki
Application Number:
JP2006512266A
Publication Date:
June 16, 2010
Filing Date:
January 31, 2005
Export Citation:
Assignee:
tdk Corporation
International Classes:
H02M1/14; H02H9/00; H02H9/04; H02M1/12; H03H1/00; H03H7/09
Domestic Patent References:
| JP56002632U | ||||
| JP53064446A | ||||
| JP57117822U | ||||
| JP10013180A |
Attorney, Agent or Firm:
Yasushi Santanzaki
Yoichiro Fujishima
Yoichiro Fujishima