Document Type and Number:
Japanese Patent JPWO2022118595
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.
Application Number:
JP2022566790A
Publication Date:
June 09, 2022
Filing Date:
November 02, 2021
Export Citation:
