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Patent Searching and Data


Title:
ELECTROMAGNETIC FIELD BAND FILTER
Document Type and Number:
Japanese Patent JP2018113558
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electromagnetic field band filter in size-saving, capable of suppressing the radiation of a leakage electromagnetic wave without impairing radio communication performance.SOLUTION: According to one aspect of the invention, there is provided an electromagnetic field band filter. The electromagnetic field band filter includes a unit cell selectively responding to a frequency of an electromagnetic wave. The unit cell includes: a conductor plate; and a slot formed to the conductor plate and serving as an electromagnetic path of a magnetic current induced by the electromagnetic wave. The slot has an extension extending the effective length of the electromagnetic path.SELECTED DRAWING: Figure 1

Inventors:
ITAMI TAKESHI
CHOKAI YOHEI
TAKATANI KAZUHIRO
Application Number:
JP2017002278A
Publication Date:
July 19, 2018
Filing Date:
January 11, 2017
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
H01Q15/14; H01P1/203; H01P7/08
Domestic Patent References:
JP2014123793A2014-07-03
JP2008536366A2008-09-04
JP2000236214A2000-08-29
Foreign References:
KR20060118813A2006-11-24
US20100019988A12010-01-28
KR100753552B12007-08-30
CN206236783U2017-06-09
CN103165965A2013-06-19
CN107302126A2017-10-27
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Tadashi Inoue