Title:
SPIRAL ANTENNA
Document Type and Number:
Japanese Patent JP2011211420
Kind Code:
A
Abstract:
To improve antenna efficiency while securing a broadband characteristic and thinning.
A spiral antenna includes an antenna element 11, a cavity 13, and a radio wave absorber 14. The antenna element is formed into a spiral shape on a dielectric substrate 12. The cavity is formed to have a space with the antenna element 11. The radio wave absorber is placed to cover a terminal end of the spiral of the antenna element 11.
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Inventors:
TANABE MASAHIRO
NAKANO HISAMATSU
NAKANO HISAMATSU
Application Number:
JP2010076044A
Publication Date:
October 20, 2011
Filing Date:
March 29, 2010
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H01Q9/27; H01P7/06; H01Q1/38; H01Q17/00
Domestic Patent References:
| JPH11163622A | 1999-06-18 | |||
| JP2010068483A | 2010-03-25 | |||
| JP2001060819A | 2001-03-06 | |||
| JP2001060821A | 2001-03-06 | |||
| JPH0528108U | 1993-04-09 |
Attorney, Agent or Firm:
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen