Title:
MANUFACTURING METHOD OF EBG STRUCTURE, EBG STRUCTURE, EBG STRUCTURE SHEET AND ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP2009218966
Kind Code:
A
Abstract:
To provide a low-loss EBG structure and an antenna device using it, and a wireless tag.
A loss of an EBG caused by a via 3 is reduced and a detrimental effect on antenna characteristics is suppressed by dispersing a path wherein a high frequency current flows by using a plurality of vias 3 connecting a top electrode 1 and a ground electrode 2 for each unit cell of the EBG structure and by reducing the loss generated when a high frequency current flows in the via 3 by enlarging a total surface area of the via 3. A surface area of a via can be enlarged by enlarging its outer shape while using a single via.
Inventors:
KONISHI TAKAYOSHI
NUMATA YUKIHIRO
MIURA TORU
SANADA ATSUSHI
NUMATA YUKIHIRO
MIURA TORU
SANADA ATSUSHI
Application Number:
JP2008061919A
Publication Date:
September 24, 2009
Filing Date:
March 11, 2008
Export Citation:
Assignee:
NEC TOKIN CORP
UNIV YAMAGUCHI
UNIV YAMAGUCHI
International Classes:
H01P1/00; G06K19/07; G06K19/077; H01P11/00; H01Q1/38; H01Q15/14
Domestic Patent References:
| JP2007104211A | 2007-04-19 | |||
| JP2005110273A | 2005-04-21 | |||
| JP2003529259A | 2003-09-30 | |||
| JP2007522735A | 2007-08-09 | |||
| JP2003529261A | 2003-09-30 |
Attorney, Agent or Firm:
Takuya Yamazaki