Title:
ELECTROMAGNETIC FIELD BAND-STOP FILTER
Document Type and Number:
WIPO Patent Application WO/2019/163910
Kind Code:
A1
Abstract:
An electromagnetic field band-stop filter according to an embodiment is provided with a plurality of unit structures each having a reflection characteristic for an electromagnetic wave of a predetermined frequency. Each of the plurality of unit structures is provided with a plurality of pole parts which are disposed in a mutually non-contact manner along the respective sides of a polygon, and a plurality of conductor parts which are provided in a one-to-one correspondence to the plurality of pole parts, each have at least one bend between one end and the other end, the one ends being joined to the pole parts on a one-to-one basis, and the other ends being joined at one point inside the unit structure when viewed from the pole parts. The plurality of unit structures are regularly two-dimensionally disposed while the respective pole parts of the plurality of unit structures adjoin each other with a gap that reflects the predetermined frequency therebetween.
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Inventors:
ITAMI GO (JP)
TORIUMI YOHEI (JP)
OKAMOTO KEN (JP)
KATO JUN (JP)
TORIUMI YOHEI (JP)
OKAMOTO KEN (JP)
KATO JUN (JP)
Application Number:
PCT/JP2019/006605
Publication Date:
August 29, 2019
Filing Date:
February 21, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01P1/20; H05K9/00
Foreign References:
| US20120105295A1 | 2012-05-03 | |||
| US20090096545A1 | 2009-04-16 |
Other References:
FILHO ET AL.: "Multiband FSS with Fractal Characteristic Based on Jerusalem Cross Geometry, Journal of Microwaves", OPTOELECTRONICS AND ELECTROMAGNETIC APPLICATIONS, vol. 16, no. 4, December 2017 (2017-12-01), pages 932 - 941, XP055632897
KUMAR ET AL.: "Multi-layer FSS for Gain Improvement of a Wide-Band Stacked Printed Antenna", PROCEEDINGS OF INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION 2015, November 2015 (2015-11-01), pages 985 - 988, XP032889008
ITAMI, GO ET AL.: "Study of Variable-Frequency Band-Stop Filter Using Three-Tier FSS.", PROCEEDINGS OF THE IEICE SOCIETY CONFERENCE, September 2017 (2017-09-01), pages 232
KUMAR ET AL.: "Multi-layer FSS for Gain Improvement of a Wide-Band Stacked Printed Antenna", PROCEEDINGS OF INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION 2015, November 2015 (2015-11-01), pages 985 - 988, XP032889008
ITAMI, GO ET AL.: "Study of Variable-Frequency Band-Stop Filter Using Three-Tier FSS.", PROCEEDINGS OF THE IEICE SOCIETY CONFERENCE, September 2017 (2017-09-01), pages 232
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
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