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1. 发明专利

JP4964573B2 Magnetic element 有权
公开(公告)号：JP4964573B2
公开(公告)日：2012-07-04
申请号：JP2006331116
申请日：2006-12-07
申请人：国立大学法人大阪大学 , 株式会社イー・エム・テクノ
发明人：正浩伊東 , 憲一町田 , 雅昭笹田
IPC分类号： H01F1/00
CPC分类号： H01F10/14 , H01Q7/06
摘要： Provided is a magnetic element which functions as a magnetic body to an electromagnetic wave having a prescribed frequency. The magnetic element has a ferromagnetic first layer on the outer circumference of a first wire rod, and the first layer is not thicker than a surface coat generated by the electromagnetic wave having the prescribed frequency.

2. 发明专利

JP2009206454A Radio wave absorber 审中-公开
标题翻译：无线电波吸收器
公开(公告)号：JP2009206454A
公开(公告)日：2009-09-10
申请号：JP2008050083
申请日：2008-02-29
申请人： Em Techno Co Ltd , Osaka Univ , Shoki:Kk , 国立大学法人大阪大学 , 株式会社イー・エム・テクノ , 株式会社祥起
发明人： ITO MASAHIRO , MACHIDA KENICHI , KATSUGANO FUMIKA , SHINDO MASAYOSHI , HIRAMATSU YUJI
IPC分类号： H05K9/00 , H01F1/00
摘要： PROBLEM TO BE SOLVED: To widen radio wave absorption characteristics in band although a radio wave absorber is a thin type. SOLUTION: The radio wave absorber is formed by putting a wire magnetic body portion 11 having magnetic wires 110 woven in meshes and a magnetic sheet 12, using a resin with dispersed magnetic powder as a binder, one over the other. The wire magnetic body portion 11 includes wire rods 110 as longitudinal threads 111 and lateral threads 112, which are mutually woven. Each of the wire rods 110 includes a core material 11a and a magnetic body layer 11b with which a periphery (external surface) thereof is coated. With the stack structure, the radio wave absorber is a thin type and a peak of an absorption frequency shifts toward a frequency side lower than the original resonance frequency of the magnetic sheet 12, so that the band is widened. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：虽然无线电波吸收体是薄型的，但是为了扩大频带中的无线电波吸收特性。解决方案：通过将具有编织在网中的磁线110的线磁体部分11和磁性片12，使用具有分散的磁粉作为粘合剂的树脂彼此放置形成无线电波吸收体。线磁体部分11包括作为纵向线111的线材110和相互编织的横向线112。每个线材110包括芯材11a和其外周（外表面）涂覆有磁性体层11b。利用堆叠结构，电波吸收体是薄型的，吸收频率的峰值朝着比磁性片材12的原始共振频率低的频率侧移动，使得带宽变宽。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2004221271A Electromagnetic shield tube and electromagnetic shield room 审中-公开
标题翻译：电磁屏蔽管和电磁屏蔽室
公开(公告)号：JP2004221271A
公开(公告)日：2004-08-05
申请号：JP2003006221
申请日：2003-01-14
申请人： Em Techno:Kk , 株式会社イー・エム・テクノ
发明人： SASADA MASAAKI
IPC分类号： H05K9/00 , H01P1/22 , H01P1/23
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic shield tube which is provided with open apertures and attenuates electromagnetic waves, and an electromagnetic shield room using the tube.
SOLUTION: The electromagnetic shield tube 1 installed in the electromagnetic shield room 2 consists of a waveguide 3, and is provided with a magnetic layer 4 on the internal surface of the waveguide 3. To the electromagnetic wave of a frequency in a prescribed range higher than a cut-off frequency of the waveguide 3, the magnetic layer 4 has a complex permeability converting the thickness of the magnetic layer 4 into a prescribed electric length. A resistive layer 5 which causes a loss in the electromagnetic wave is formed on the inside of the magnetic layer 4.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有开放孔径并减弱电磁波的电磁屏蔽管，以及使用该管的电磁屏蔽室。解决方案：安装在电磁屏蔽室2中的电磁屏蔽管1由波导3组成，并在波导3的内表面上设置有磁性层4.对于规定的频率的电磁波范围高于波导3的截止频率，磁性层4具有将磁性层4的厚度转换成规定电长度的复数磁导率。在磁性层4的内部形成有导致电磁波损失的电阻层5.（C）2004，JPO＆NCIPI

4. 发明专利

JP4923221B2 Magnetic element 有权
公开(公告)号：JP4923221B2
公开(公告)日：2012-04-25
申请号：JP2006134171
申请日：2006-05-12
申请人：国立大学法人大阪大学 , 株式会社イー・エム・テクノ
发明人：正浩伊東 , 憲一町田 , 雅昭笹田
IPC分类号： H01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a magnetic element that functions as a magnetic body with no increase in dielectric constant for electromagnetic waves of high frequency. SOLUTION: The magnetic element functions as a magnetic body for the electromagnetic waves having a specified wavelength λ. A plurality of wire materials 2 consisting of magnetic body are so arranged as to cross each other in at least two directions. The line material 2 has such diameter D as D s , where δ is skin depth in skin effect which is caused by electromagnetic waves of wavelength λ to be treated, and μ s is specific permeability of the wire material 2. COPYRIGHT: (C)2008,JPO&INPIT

5. 发明专利

JP2008177355A Radio wave absorber 有权
标题翻译：无线电波吸收器
公开(公告)号：JP2008177355A
公开(公告)日：2008-07-31
申请号：JP2007009351
申请日：2007-01-18
申请人： Em Techno Co Ltd , 株式会社イー・エム・テクノ
发明人： SASADA MASAAKI
IPC分类号： H05K9/00 , B32B7/02 , E04B1/92 , H01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a radio wave absorber which is easily thinned. SOLUTION: The radio wave absorber comprises in sequence from one end: a resistive element layer 2 including a resistive element, a magnetic substance layer 3 functioning as a magnetic substance, and a conductive layer 4. The magnetic substance layer 3 is mesh patterned magnetic wire rod by a first wire rod with a copper second layer provided on the outer circumference of a polyester wire rod and a ferromagnetic first layer composed of an alloy of iron and nickel and formed on the outer circumference of the first wire rod. The thickness of the first layer is not more than the skin depth caused by the magnetic wave having a frequency absorbed by the radio wave absorber. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供容易变薄的无线电波吸收体。解决方案：无线电波吸收体从一端依次包括：包括电阻元件的电阻元件层2，用作磁性物质的磁性物质层3和导电层4.磁性物质层3被啮合在第一线材的外圆周上形成由聚酯线材的外圆周上设置有铜第二层的第一线材和由铁和镍的合金构成的铁磁性第一层的图案化的金属线材。第一层的厚度不大于由具有由无线电波吸收体吸收的频率的磁波引起的趋肤深度。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2008147312A Magnetic element 有权
标题翻译：磁性元件
公开(公告)号：JP2008147312A
公开(公告)日：2008-06-26
申请号：JP2006331116
申请日：2006-12-07
申请人： Em Techno Co Ltd , Osaka Univ , 国立大学法人大阪大学 , 株式会社イー・エム・テクノ
发明人： SASADA MASAAKI , ITO MASAHIRO , MACHIDA KENICHI
IPC分类号： H01F1/00
CPC分类号： H01F10/14 , H01Q7/06
摘要： PROBLEM TO BE SOLVED: To provide a magnetic element that functions as a magnetic body with no increase in dielectric constant for electromagnetic waves of high frequency. SOLUTION: The magnetic element includes a ferromagnetic body layer 3 which is arranged in the outer periphery of a line material 2 by the thickness not more than skin thickness δ generated by the electromagnetic waves of prescribed frequency. Thus, the magnetic element functions as the magnetic body by the frequency. The line material 2 may be an insulating body, a normal magnetic body, or a ferromagnetic body of type different from that of the ferromagnetic body layer 3. When the ferromagnetic body layer 3 is the ferromagnetic body having magnetic permeability which is not less than the magnetic permeability of nickel in DC, it is adequate that the thickness of the ferromagnetic body layer 3 is not more than 12 μm. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供用作磁体的磁性元件，而不增加高频电磁波的介电常数。解决方案：磁性元件包括铁磁体层3，其被布置在线材2的外周中的厚度不大于由规定频率的电磁波产生的皮肤厚度δ。因此，磁性元件通过频率用作磁体。线材2可以是与铁磁体层3不同的类型的绝缘体，正常磁体或铁磁体。当铁磁体层3是具有不小于在DC中的镍的磁导率，铁磁体层3的厚度不大于12μm就足够了。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007059456A Wave absorber 审中-公开
标题翻译：波浪吸收器
公开(公告)号：JP2007059456A
公开(公告)日：2007-03-08
申请号：JP2005239850
申请日：2005-08-22
申请人： Em Techno:Kk , 株式会社イー・エム・テクノ
发明人： SASADA MASAAKI
IPC分类号： H05K9/00 , B32B7/02 , H01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a wave absorber capable of widening an absorption range of electromagnetic waves while reducing thickness. SOLUTION: A porous magnetic layer 2, a resistor layer 3, a lossy layer made of a porous magnetic layer 4, and a conductor layer 5 are laminated in a platelike shape in the sequence viewed from an incident plane of electromagnetic waves. The porous magnetic layers 2 and 4 are structured by dispersing fine magnetic particles in a porous binder made of a porous dielectric material. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够在减小厚度的同时加宽电磁波的吸收范围的波吸收体。解决方案：从电磁波的入射面看，多孔磁性层2，电阻层3，由多孔磁性层4制成的有损层和导体层5层叠成板状。多孔磁性层2和4通过将细磁性颗粒分散在由多孔电介质材料制成的多孔粘合剂中而构成。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP4447766B2 Earphone provided with electromagnetic radiation suppressing member and the electromagnetic radiation suppressing member 有权
公开(公告)号：JP4447766B2
公开(公告)日：2010-04-07
申请号：JP2000351843
申请日：2000-11-17
申请人：株式会社イー・エム・テクノ
发明人：雅昭笹田
IPC分类号： H04R1/10 , H01F1/00 , H01F17/06 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To effectively suppress electromagnetic waves that are radiated from the cord of an ear phone. SOLUTION: A magnetic body 18 made of a ferrite core or the like is provided so that one portion of the cord 12 of the ear phone 10 can be covered, and a flexible lossy dielectric 20 made of a nonwoven fabric or the like is provided so that the magnetic body 18 is covered.

9. 发明专利

JP4164527B2 Wave absorber 有权
公开(公告)号：JP4164527B2
公开(公告)日：2008-10-15
申请号：JP2007009351
申请日：2007-01-18
申请人：株式会社イー・エム・テクノ
发明人：雅昭笹田
IPC分类号： H05K9/00 , B32B7/02 , E04B1/92 , H01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a radio wave absorber which is easily thinned. SOLUTION: The radio wave absorber comprises in sequence from one end: a resistive element layer 2 including a resistive element, a magnetic substance layer 3 functioning as a magnetic substance, and a conductive layer 4. The magnetic substance layer 3 is mesh patterned magnetic wire rod by a first wire rod with a copper second layer provided on the outer circumference of a polyester wire rod and a ferromagnetic first layer composed of an alloy of iron and nickel and formed on the outer circumference of the first wire rod. The thickness of the first layer is not more than the skin depth caused by the magnetic wave having a frequency absorbed by the radio wave absorber. COPYRIGHT: (C)2008,JPO&INPIT

10. 发明专利

JP2007305874A Magnetic element 有权
标题翻译：磁性元件
公开(公告)号：JP2007305874A
公开(公告)日：2007-11-22
申请号：JP2006134171
申请日：2006-05-12
申请人： Em Techno:Kk , Osaka Univ , 国立大学法人大阪大学 , 株式会社イー・エム・テクノ
发明人： SASADA MASAAKI , ITO MASAHIRO , MACHIDA KENICHI
IPC分类号： H01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a magnetic element that functions as a magnetic body with no increase in dielectric constant for electromagnetic waves of high frequency. SOLUTION: The magnetic element functions as a magnetic body for the electromagnetic waves having a specified wavelength λ. A plurality of wire materials 2 consisting of magnetic body are so arranged as to cross each other in at least two directions. The line material 2 has such diameter D as D s , where δ is skin depth in skin effect which is caused by electromagnetic waves of wavelength λ to be treated, and μ s is specific permeability of the wire material 2. COPYRIGHT: (C)2008,JPO&INPIT

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