Title:
FREQUENCY-SELECTIVE REFLECTOR PLATE AND REFLECTION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2022/186385
Kind Code:
A1
Abstract:
The present invention is a frequency-selective reflector plate for reflecting electromagnetic waves in a particular frequency band in a direction different from a regular reflection direction. The frequency-selective reflector plate has: a reflecting member for reflecting the electromagnetic waves; and a dielectric layer that is disposed at an incident side of the reflecting member on which the electromagnetic waves are incident, that has an irregularity structure in which a plurality of unit structures having a thickness distribution of a thickness increasing in a prescribed direction are arranged, and that transmits the electromagnetic waves. Each of the unit structures of the dielectric layer has a plurality of cell regions the thicknesses of which differ from one another. The dielectric layer has, as the unit structure, at least a first unit structure having three or more of the cell regions the thicknesses of which differ from one another. The reflection direction of the electromagnetic waves is controlled by controlling the relative reflection phase distribution of the electromagnetic waves by means of the thickness distribution of the dielectric layer.
Inventors:
MIYAZAKI YUICHI (JP)
ASAKURA HIROYUKI (JP)
NAKAMURA ATSUO (JP)
SEKIGUCHI TAKESHI (JP)
KAWANO SHIGEKI (JP)
ASAKURA HIROYUKI (JP)
NAKAMURA ATSUO (JP)
SEKIGUCHI TAKESHI (JP)
KAWANO SHIGEKI (JP)
Application Number:
PCT/JP2022/009481
Publication Date:
September 09, 2022
Filing Date:
March 04, 2022
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
H01Q15/14
Domestic Patent References:
| WO2021241305A1 | 2021-12-02 | |||
| WO2016002832A1 | 2016-01-07 |
Foreign References:
| JPS511501B1 | 1976-01-17 | |||
| JP2014217031A | 2014-11-17 | |||
| JP5371633B2 | 2013-12-18 | |||
| JP5162677B2 | 2013-03-13 |
Other References:
ZOU LONGFANG; WITHAYACHUMNANKUL WITHAWAT; FUMEAUX CHRISTOPHE; SHAH CHARAN; MITCHELL ARNAN; BHASKARAN MADHU; SRIRAM SHARATH: "Comparison between an optical dielectric resonator nano-antenna reflectarray and an equivalent dielectric grating reflector", 2013 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM (APSURSI), 7 July 2013 (2013-07-07), pages 1868 - 1869, XP032556306, ISSN: 1522-3965, ISBN: 978-1-4799-3538-3, DOI: 10.1109/APS.2013.6711592
HIROMI MATSUNO: "Technical Report", vol. 120, 2020, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, article "Visible Light Transfer Meta-surface Reflectors", pages: 13 - 17
MAYUMI YOSHINO: "IEICE Technical Report", April 2020, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, article "Received Power Improvement in NLoS Region of L-Shaped Corridor by Utilizing Meta-Reflector"
HIROMI MATSUNO: "Technical Report", vol. 120, 2020, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, article "Visible Light Transfer Meta-surface Reflectors", pages: 13 - 17
MAYUMI YOSHINO: "IEICE Technical Report", April 2020, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, article "Received Power Improvement in NLoS Region of L-Shaped Corridor by Utilizing Meta-Reflector"
Attorney, Agent or Firm:
YAMASHITA, Akihiko et al. (JP)
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