Title:
多周波共用アンテナ
Document Type and Number:
Japanese Patent JP4442380
Kind Code:
B2
Abstract:
A multiple-frequency common antenna has a first substrate sheet and a second substrate sheet respectively structured by an HIP consisting of a metal plate, small metal plates disposed in two dimensions and linear metal bars connecting these elements. The antenna restricts propagation of surface currents of the first and second frequency bands which are not overlapping with each other. An inverse L-shape antenna and a monopole antenna which are fed with a center conductor and an external conductor of the coaxial line respectively operate as the antenna on the first substrate sheet in the first frequency band and second frequency band. The second substrate sheet does not propagate the radiated wave of the monopole antenna, thereby avoiding unwanted re-radiation.
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Inventors:
Makoto Tanaka
Matsugaya Waoki
Hao Shin
Matsugaya Waoki
Hao Shin
Application Number:
JP2004283311A
Publication Date:
March 31, 2010
Filing Date:
September 29, 2004
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H01Q15/14; H01Q5/10; H01Q9/30; H01Q9/42; H01Q9/44; H01Q13/08; H01Q15/00; H01Q19/10
Domestic Patent References:
| JP2003514476A |
Foreign References:
| US6262495 |
Other References:
Jiyoung Seo and Bomson Lee,Performance enhancement of antennas using PBG structures,IEEE Antennas and Propagation Society International Symposium, 2003 digest,米国,IEEE,2003年 6月,Vol. 4,pp. 859 - 862
K. Agi, E.R. Brown, O.B. McMahon, C. Dill III and K.J. Malloy,Design of ultrawideband photonic crystals for broadband antenna applications,Electronics Letters,英国,IET,1994年12月,Vol. 30, No. 25,pp. 2166 - 2167
K. Agi, E.R. Brown, O.B. McMahon, C. Dill III and K.J. Malloy,Design of ultrawideband photonic crystals for broadband antenna applications,Electronics Letters,英国,IET,1994年12月,Vol. 30, No. 25,pp. 2166 - 2167
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Fumihiro Mizuno
Takahiro Miura
Fumihiro Mizuno