Title:
ANTENNA DEVICE, INTEGRATED ANTENNA DEVICE AND INTEGRATED MOBILE ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP3960255
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To adequately control directivity to obtain the maximum gain of a radio wave radiated from an antenna device in the desired direction.
SOLUTION: In the integrated mobile antenna device 1, an antenna element 5 for VICS is mounted in a location deviated in the -x direction (direction opposed to the running direction of a vehicle) from the center of a circuit substrate 2. Moreover, a radio wave absorbing material 7 to absorb a leakage current outputted from an antenna element 3 for ETC is provided between the circuit substrate 2 and a ground plate 9. In addition, an antenna element 4 for GPS and the antenna element 3 for ETC are arranged in a positional relation in which the antenna device for GPS operates as a waveguide of the radio wave radiated from the antenna device for ETC.
Inventors:
Akihiko Hayashi
Application Number:
JP2003119650A
Publication Date:
August 15, 2007
Filing Date:
April 24, 2003
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H01Q17/00; H01Q21/30; H01Q1/22; H01Q1/32; H01Q1/52; (IPC1-7): H01Q21/30; H01Q1/22; H01Q1/32; H01Q1/52; H01Q17/00
Domestic Patent References:
| JP2002314331A | ||||
| JP2002151929A | ||||
| JP2003110351A | ||||
| JP2004056773A | ||||
| JP2001127531A | ||||
| JP9139625A | ||||
| JP2003078327A | ||||
| JP2001267843A | ||||
| JP11337348A | ||||
| JP200456773A |
Attorney, Agent or Firm:
Tsuyoshi Sato
Kiyoshi Ogawa
Kiyoshi Ogawa
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