LAMINATED BRANCHING FILTER - NGK SPARK PLUG CO

Title:

LAMINATED BRANCHING FILTER

Document Type and Number:

Japanese Patent JP2006101149

Kind Code:

A

Abstract:

To provide a laminated branching filter capable of improving attenuation characteristics.

First and second capacity elements as elements of a low-pass filter circuit and a high-pass filter circuit constituting the laminated branching filter are composed of first and second ground electrodes arranged on a first plane, first and 2nd flat electrodes which are arranged on a second plane and electrostatically coupled to the first and second flat electrodes, third and fourth ground electrodes which are arranged on a third plane and electrostatically coupled to the first and second flat electrodes. The first and second ground electrodes and third and fourth ground electrodes are separated, so signals are prevented from being mixed between the first and second capacity elements and then between the low-pass filter circuit and high-pass filter circuit to improve attenuation characteristics of the laminated branching filter.

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Inventors:

WAKITA MANABU
KAMIYA MUNETAKA
SUEHIRO TETSUDAI

Application Number:

JP2004284321A

Publication Date:

April 13, 2006

Filing Date:

September 29, 2004

Export Citation:

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Assignee:

NGK SPARK PLUG CO

International Classes:

H03H7/46; H03H7/075

Domestic Patent References:

JPH04103209A	1992-04-06
JP2002353851A	2002-12-06

Attorney, Agent or Firm:

Saichi Suyama

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