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Patent Searching and Data


Title:
ANTENNA SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/071390
Kind Code:
A1
Abstract:
This antenna system is provided with a glass plate which has a thickness of at least 1.1 mm and a dielectric loss tangent of at least 0.005, and an antenna which is positioned away from one surface of the glass plate. The glass plate and the antenna are arranged so as to obtain a radiation efficiency ηA[dB] that satisfies ηA ≥ η0 + (ηλ/2-η0)×0.1 when defining the radiation efficiency as the ratio between the power inputted to the antenna and the power radiated from the antenna into space, λ as the wavelength of radio waves of a specific frequency greater than or equal to 10 GHz, η0[dB] as the radiation efficiency when the glass plate and the antenna are in contact, and ηλ/2[dB] as the radiation efficiency when the distance between the aforementioned one surface and the antenna is λ/2.

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Inventors:
SAYAMA TOSHIKI (JP)
OKUDA RYOTA (JP)
MOTEGI TAKESHI (JP)
KAGAYA OSAMU (JP)
Application Number:
PCT/JP2019/038814
Publication Date:
April 09, 2020
Filing Date:
October 01, 2019
Export Citation:
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Assignee:
AGC INC (JP)
International Classes:
H01Q1/22; H01Q21/08; H01Q13/08
Domestic Patent References:
WO2017188415A12017-11-02
Foreign References:
JP2006191574A2006-07-20
JP2017060038A2017-03-23
US20180175478A12018-06-21
JP2018190375A2018-11-29
JP2018211308A2018-11-09
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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