Invention Grant
US07651626B2 Hexagonal ferrite, antenna using the same and communication apparatus
有权
六角铁氧体，使用天线的天线和通信装置
- Patent Title: Hexagonal ferrite, antenna using the same and communication apparatus
- Patent Title (中): 六角铁氧体，使用天线的天线和通信装置
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Application No.: US11661603Application Date: 2006-12-14
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Publication No.: US07651626B2Publication Date: 2010-01-26
- Inventor: Masayuki Gonda , Hiroyuki Aoyama
- Applicant: Masayuki Gonda , Hiroyuki Aoyama
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: Hitachi Metals, Ltd.
- Current Assignee: Hitachi Metals, Ltd.
- Current Assignee Address: JP Minato-ku, Tokyo
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2004-365956 20041217; JP2005-101899 20050331; JP2005-166517 20050607
- International Application: PCT/JP2005/022950 WO 20061214
- International Announcement: WO2006/064839 WO 20060622
- Main IPC: C04B35/26
- IPC: C04B35/26 ; H01F1/34
Abstract:
There is provided Y-type hexagonal ferrite having a high density of sintered body and a low level of loss and an antenna.The hexagonal ferrite having Y-type ferrite as the main phase is characterized in that main components of the hexagonal ferrite are M1O (M1 stands for at least one of Ba and Sr), M2O (M2 stands for at least one of Co, Ni, Cu, Zn and Mn) and Fe2O3, and the loss factor and the density of sintered body are 0.15 or lower and 4.6×103 kg/m3 or higher, respectively. The hexagonal ferrite is used to configure an antenna and a communication apparatus.
Public/Granted literature
- US20080036671A1 Hexagonal Ferrite, Antenna Using The Same And Communication Apparatus Public/Granted day:2008-02-14
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