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Title:
ON-VEHICLE ANTENNA
Document Type and Number:
WIPO Patent Application WO2006103820
Kind Code:
A9
Abstract:
An on-vehicle antenna capable of preventing a plurality of antennas from being affected on each other even if the plurality of antennas are installed on a vehicle. An insert fixture (12) is formed integrally with an antenna cover so that the insert fixture (12) can be disposed at a position meeting the requirement of h << ?/4 over a patch antenna (13). Also, the width (D) of the insert fixture (12) and an antenna element (10) fixed to the antenna fixture (12) is set to fulfill the requirement of D << ?/4, and the insert fixture and the antenna element are extended diagonally upward. Thus, even if the antenna element (10) and the insert fixture (12) as metal conductors are installed in proximity to the patch antenna (13), the antenna can be prevented from affecting the radiation pattern and electric characteristics of the patch antenna (13).

Inventors:
KAWAGUCHI SHINOBU (JP)
OHSHIMA MOTOKI (JP)
MORITA HITOSHI (JP)
Application Number:
PCT/JP2006/301020
Publication Date:
December 28, 2006
Filing Date:
January 24, 2006
Export Citation:
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Assignee:
NIPPON ANTENNA KK (JP)
KAWAGUCHI SHINOBU (JP)
OHSHIMA MOTOKI (JP)
MORITA HITOSHI (JP)
International Classes:
H01Q1/32; H01Q1/22; H01Q1/52; H01Q21/28
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