Title:
VEHICLE ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/035700
Kind Code:
A1
Abstract:
A vehicle antenna device arranged in a door handle (1) includes a first antenna
(11) which transmits and receives a communication radio wave to/from a key radio
mobile device; and a second antenna (12) which transmits and receives a communication
radio wave to/from a card radio mobile device. The second antenna (12) has a different
frequency band of the transmission/reception radio wave from the first antenna
(11). The first antenna (11) and the second antenna (12) generate magnetic fields
whose directions are substantially orthogonal.
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Inventors:
TSURUMAKI KOUICHI
Application Number:
PCT/JP2007/068158
Publication Date:
March 27, 2008
Filing Date:
September 19, 2007
Export Citation:
Assignee:
ALPHA CORP (JP)
TSURUMAKI KOUICHI
TSURUMAKI KOUICHI
International Classes:
H01Q21/30; H01Q1/22; H01Q1/32; H01Q5/00; H01Q5/10; H01Q5/28; H01Q7/08; H01Q21/28
Foreign References:
| JP2003298348A | 2003-10-17 | |||
| JP2003163525A | 2003-06-06 | |||
| JP2003287570A | 2003-10-10 | |||
| JP2002033614A | 2002-01-31 | |||
| JPS6238004A | 1987-02-19 | |||
| JP2001339224A | 2001-12-07 |
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (2-8 Toranomon 1-chome,Minato-k, Tokyo 01, JP)
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