Title:
DUAL RF TAG ANTENNA AND DUAL RF TAG
Document Type and Number:
WIPO Patent Application WO/2022/118595
Kind Code:
A1
Abstract:
Provided are a dual RF tag antenna and a dual RF tag that have a long communication range and that operate in two types of frequency bands. A dual RF tag antenna 1 of the present invention is provided with an insulating base material 10, a main waveguide element 20 provided on one face of the insulating base material, an auxiliary waveguide element 30 disposed such that at least a portion thereof faces the surface of the main waveguide element, a ground plate 40 provided on another face of the insulating base material, a feed unit 50, and a short circuiting unit 60, which all together constitute a planar inverted F antenna. The area of the portion where the auxiliary waveguide element and the main waveguide element face one another changes as a result of the the position of the auxiliary waveguide element being changed. As a result, the wavelength λ of radio waves can be switched between a low-frequency side and a high-frequency side, and radio waves in two types of frequency bands can be received at high sensitivity.
Inventors:
SUGIMURA SHIRO (JP)
NIWATA TATSUJI (JP)
FUJII MASAKAZU (JP)
NIWATA TATSUJI (JP)
FUJII MASAKAZU (JP)
Application Number:
PCT/JP2021/040316
Publication Date:
June 09, 2022
Filing Date:
November 02, 2021
Export Citation:
Assignee:
PHOENIX SOLUTION CO LTD (JP)
International Classes:
H01Q1/08; H01Q9/14; H01Q13/08
Domestic Patent References:
| WO2020090319A1 | 2020-05-07 |
Foreign References:
| US20080001829A1 | 2008-01-03 | |||
| JPH0750508A | 1995-02-21 | |||
| JP2002064324A | 2002-02-28 | |||
| US6437747B1 | 2002-08-20 |
Attorney, Agent or Firm:
UMINO Toru (JP)
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