Title:
MAGNETIC MATERIAL ANTENNA AND FERRITE SINTER
Document Type and Number:
WIPO Patent Application WO/2007/148438
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a ferrite sinter for an antenna suitable for use in a high
frequency band and a broad band and to provide a magnetic material antenna. [MEANS
FOR SOLVING PROBLEMS] A magnetic material antenna using a ferrite sinter, characterized
in that one or more conductors are provided on at least one of the surface and inside
of the ferrite sinter, the ferrite sinter is a sinter of Y-type ferrite composed
mainly of BaO, CoO, and Fe2O3, the ferrite sinter contains
Cu, and the percentage area of a Co-rich phase in the cross section of the sinter
is not more than 1%.
Inventors:
GONDA MASAYUKI (JP)
FUJII SHIGEO (JP)
AOYAMA HIROYUKI (JP)
FUJII SHIGEO (JP)
AOYAMA HIROYUKI (JP)
Application Number:
PCT/JP2007/000666
Publication Date:
December 27, 2007
Filing Date:
June 21, 2007
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
GONDA MASAYUKI (JP)
FUJII SHIGEO (JP)
AOYAMA HIROYUKI (JP)
GONDA MASAYUKI (JP)
FUJII SHIGEO (JP)
AOYAMA HIROYUKI (JP)
International Classes:
C04B35/26; H01F1/34; H01Q1/24; H01Q1/40; H01Q7/08
Foreign References:
| JP2005278067A | 2005-10-06 | |||
| JP2002260911A | 2002-09-13 | |||
| JP2002260912A | 2002-09-13 | |||
| JP2003146739A | 2003-05-21 | |||
| JP2002068830A | 2002-03-08 | |||
| JPH10145123A | 1998-05-29 | |||
| JPS4940046A | 1974-04-15 | |||
| JPH0815078A | 1996-01-19 |
Attorney, Agent or Firm:
KURIHARA, Kiyoshi (21-8 Yoyogi 2-chome, Shibuya-ku, Tokyo 53, JP)
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