Title:
アンテナ装置
Document Type and Number:
Japanese Patent JP4732485
Kind Code:
B2
Abstract:
An antenna apparatus includes an antenna and a support member. The antenna has (i) an outer element, which has a spiral section prolonged spirally in an axial direction, and (ii) an inner element, which has a spiral section prolonged spirally in the axial direction and is surrounded with an interval space by the outer element. The antenna is a terminal open type in which one of the two elements is used as a signal line and the other is used as a GND line. The support member includes a dielectric member and contacts each of the spiral sections of the outer and inner elements while supporting the outer and inner elements in a predetermined positional relationship. Further, the number of turns of the spiral section in the inner element is equal to or less than the number of turns of the spiral section in the outer element.
Inventors:
Takaoka Akira
Noriaki Okada
Noriaki Okada
Application Number:
JP2008147340A
Publication Date:
July 27, 2011
Filing Date:
June 04, 2008
Export Citation:
Assignee:
株式会社日本自動車部品総合研究所
株式会社デンソー
株式会社デンソー
International Classes:
H01Q9/42; H01Q1/36; H01Q11/08
Domestic Patent References:
| JP2007221374A | ||||
| JP38010856B1 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Taihei Nonobe