Title:
ARTIFICIAL MAGNET CONDUCTOR, ANTENNA REFLECTOR, AND METHOD FOR CALCULATING THICKNESS OF DIELECTRIC MEDIUM
Document Type and Number:
WIPO Patent Application WO/2015/186805
Kind Code:
A1
Abstract:
Provided is an artificial magnet conductor having a highly precise frequency characteristic which is closer to the designed frequency characteristic value in comparison to prior art. Also provided is an antenna reflector using this artificial magnet conductor. This artificial magnet conductor is equipped with: a dielectric medium; base cells, which are formed on the surface of the dielectric medium, and are formed with a conductor patch pattern and a conductor loop pattern formed with a prescribed gap with respect to the conductor patch pattern; a frequency selective surface wherein the base cells are arranged in a periodic manner on the surface of the dielectric medium; and a conductor layer formed on the back surface of the dielectric medium. The thickness of the dielectric medium is calculated by means of a prescribed arithmetic equation using an addition value, which expresses the phase change from an incident wave to a reflected wave in the dielectric medium as a first phase change, which is in the gap, and a second phase change, which is between the base cells in the dielectric medium and the conductor layer.
Inventors:
KAWATA AKIHIRO (JP)
Application Number:
PCT/JP2015/066252
Publication Date:
December 10, 2015
Filing Date:
June 04, 2015
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
H01Q15/14
Foreign References:
| GB2328319A | 1999-02-17 |
Other References:
H. M. EL-MAGHRABI ET AL.: "Parametric Study of Planar Artificial Magnetic Conductor Surface;", PROCEEDINGS OF THE TWENTY THIRD NATIONAL RADIO SCIENCE CONFERENCE, vol. 0, 2006, pages 1 - 8, XP055239565
K. AGARWAL, NASIMUDDIN ET AL.: "Unidirectional wideband circularly polarised aperture antennas backed with artificial magnetic conductor reflectors;", IET MICROWAVES, ANTENNAS AND PROPAGATION;, vol. 7, no. 5;, 2013, pages 338 - 346, XP006045898, ISSN: 1751-8725
K. AGARWAL, NASIMUDDIN ET AL.: "Unidirectional wideband circularly polarised aperture antennas backed with artificial magnetic conductor reflectors;", IET MICROWAVES, ANTENNAS AND PROPAGATION;, vol. 7, no. 5;, 2013, pages 338 - 346, XP006045898, ISSN: 1751-8725
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P. C. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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