Title:
IN-VEHICLE ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/067253
Kind Code:
A1
Abstract:
According to the present invention, the use of more frequency bands is enabled with fewer elements, and in particular, an antenna gain increases over a wide frequency range. Two antenna elements 21, 22 are erected on an antenna base 10. The antenna elements 21, 22 comprise: proximal end portions 21a, 22a; and two arm portions 211a, 211b, 221a, 221b extending in a strip shape in different directions away from the proximal end portions 21a, 22a. The inductance of at least one of the two arm portions 221a, 211b of the antenna element 21 is larger than the inductance of a planar conductor having the same material and substantially the same outer shape. The inductance of at least one of the two arm portions 221a, 221b of the antenna element 22 is larger than the inductance of a planar conductor having the same material and substantially the same outer shape.
Inventors:
SONE TAKAYUKI (JP)
Application Number:
PCT/JP2019/037788
Publication Date:
April 02, 2020
Filing Date:
September 26, 2019
Export Citation:
Assignee:
YOKOWO SEISAKUSHO KK (JP)
International Classes:
H01Q1/32; H01Q1/22; H01Q5/10; H01Q5/371
Foreign References:
| JP2003258527A | 2003-09-12 | |||
| US20120081253A1 | 2012-04-05 | |||
| JP2003502894A | 2003-01-21 | |||
| JP2009017116A | 2009-01-22 | |||
| JP2013085308A | 2013-05-09 |
Other References:
See also references of EP 3859883A4
Attorney, Agent or Firm:
SUZUKI Seigoh (JP)
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