公开(公告)号：EP1819211A4

公开(公告)日：2011-02-23

申请号：EP05811807

申请日：2005-12-05

申请人： NITTA CORP

发明人： MAEZAWA MAKOTO ,  YOSHIDA TAKAHIKO ,  KIYOHARA YOSHIHARU ,  SATO SHINICHI ,  GO HARUHIDE

IPC分类号： H05K9/00 ,  H01F1/00 ,  H01F1/20

CPC分类号： H05K9/0083 ,  G06K19/07771 ,  H01F1/0027 ,  H01F1/28 ,  H01F17/0006 ,  H01F41/16 ,  H01Q1/52 ,  H01Q17/00 ,  Y10T428/31663

公开(公告)号：EP1806961A4

公开(公告)日：2009-06-24

申请号：EP05788222

申请日：2005-09-29

申请人： NITTA CORP

发明人： MATSUSHITA MASATO ,  YOSHIDA TAKAHIKO ,  GO HARUHIDE ,  KIYOHARA YOSHIHARU ,  MAEZAWA MAKOTO ,  SATO SHINICHI

IPC分类号： H05K9/00 ,  H01Q17/00

CPC分类号： H05K9/0088 ,  H01Q15/0013 ,  H01Q17/00 ,  H01Q17/007

摘要： A conductive pattern (12) has an external shape which is substantially a polygon and can have a high peak value of the electromagnetic wave absorption amount as compared to a case when the conductive pattern has a circular external shape. Thus, the conductive pattern is basically a polygon and at least one of the corner portions is formed by a curved line. This minimizes the shift of the frequency at which the absorption amount becomes a peak value by the polarization direction of the electromagnetic wave. Accordingly, it is possible to realize an electromagnetic absorber having an excellent electromagnetic wave absorption characteristic exhibiting a high peak value of the absorption amount of the electromagnetic wave and a small shift of frequency at which the absorption amount becomes a peak value by the polarization direction of the electromagnetic wave.

摘要翻译： 与导电图案具有圆形外形的情况相比，导电图案（12）具有基本上为多边形的外形，并且可以具有电磁波吸收量的高峰值。 因此，导电图案基本上是多边形并且角部中的至少一个由曲线形成。 这使得吸收量成为峰值的频率的偏移最小化了电磁波的偏振方向。 因此，可以实现电磁波吸收特性优异的电磁吸收体，该电磁波吸收特性表现出电磁波吸收量的高峰值和吸收量在极化方向上变为峰值的频率的小偏移 电磁波。

公开(公告)号：EP1722618A4

公开(公告)日：2008-10-29

申请号：EP04716057

申请日：2004-03-01

申请人： NITTA CORP

发明人： YOSHIDA TAKAHIKO ,  GO HARUHIDE ,  KIYOHARA YOSHIHARU ,  SATO SHINICHI ,  MAEZAWA MAKOTO ,  MAENAKA MAMORU

IPC分类号： H05K9/00 ,  H01Q17/00

CPC分类号： H05K9/0003 ,  H01Q17/002

摘要： A thin, light and soft electromagnetic wave absorber exhibiting an excellent workability. The first conductor element group (12) of a first conductor element layer (6) consists of aligned cross conductor elements (30) and square conductor elements (31) in regions surrounded by cross conductor elements (30). A radio wave incident from the first conductor element layer (6) side is received by each element (30, 31), internally subjected to multiple reflection and then absorbed by a first loss material layer. Since the first conductor element group (12) is realized by the cross conductor elements (30) and the square conductor elements (31), receiving effect is enhanced and the radio wave can be collected with a high collection efficiency.