Title:
VEHICLE ANTENNA SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/239768
Kind Code:
A1
Abstract:
Provided is a vehicle antenna system capable of efficiently receiving a signal of circular polarization from the zenith direction. A vehicle antenna system (100) is provided with a window glass (30) for a vehicle (20), and an antenna element (40) capable of receiving a signal of a predetermined frequency band. The antenna element (40) is provided on a first major surface of a dielectric substrate (43), and includes a radiating conductor (41) capable of receiving a signal of circular polarization of a first frequency, and a ground conductor (44) disposed opposite the radiating conductor (41) with the dielectric substrate (43) therebetween. The direction of a normal to the first major surface is less than or equal to 45° with respect to the vertical direction. The radiating conductor (41) is spaced apart from the inner surface of the window glass (30) toward the interior of the vehicle, with a dielectric layer (60) therebetween.
Inventors:
TAKEUCHI SHOICHI (JP)
SHOJI HIDEAKI (JP)
SAYAMA TOSHIKI (JP)
KATO YUSUKE (JP)
SHOJI HIDEAKI (JP)
SAYAMA TOSHIKI (JP)
KATO YUSUKE (JP)
Application Number:
PCT/JP2022/019791
Publication Date:
November 17, 2022
Filing Date:
May 10, 2022
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
H01Q1/22; H01Q1/32; H01Q5/40; H01Q13/08
Domestic Patent References:
| WO2019177144A1 | 2019-09-19 | |||
| WO2020071390A1 | 2020-04-09 |
Foreign References:
| JPH0563424A | 1993-03-12 | |||
| JP2005130532A | 2005-05-19 | |||
| JP2008135931A | 2008-06-12 | |||
| JPH10276034A | 1998-10-13 | |||
| EP0899810A2 | 1999-03-03 | |||
| JPH0255706U | 1990-04-23 | |||
| JP2007251936A | 2007-09-27 | |||
| US6014110A | 2000-01-11 | |||
| US20090289852A1 | 2009-11-26 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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