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Patent Searching and Data


Title:
IN-VEHICLE FREQUENCY SELECTION BOARD
Document Type and Number:
Japanese Patent JP2013183116
Kind Code:
A
Abstract:

To suppress noise electromagnetic wave interference with a radio communication apparatus used in an automobile.

A frequency selection board 10 comprises: a dielectric plate 12; and a conductor layer 14 installed on a plate surface of the dielectric plate 12. The frequency selection board 10 further comprises a plurality of loop shape slots 18 which are installed in the conductor layer 14 and have annular shapes individually. There are formed small loop sections 24 in four corners of the loop shape slot 18, where the small loop section has a rectangular loop shape from which one corner is chipped. The loop shape slots 18 are arranged so as to make a column in a longitudinal direction and make a row in a lateral direction.


Inventors:
Kumaki, Kiyotaka
Sakakibara, Kunio
Tachikawa, Katsuyuki
Application Number:
JP2012000047711
Publication Date:
September 12, 2013
Filing Date:
March 05, 2012
Export Citation:
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Assignee:
KOJIMA PRESS INDUSTRY CO LTD
NAGOYA INSTITUTE OF TECHNOLOGY
International Classes:
H05K9/00; H01Q17/00
Domestic Patent References:
JPH06152178A1994-05-31
JP2005142298A2005-06-02
JPH06152178A1994-05-31
Foreign References:
WO1997006578A11997-02-20
Attorney, Agent or Firm:
特許業務法人YKI国際特許事務所