Title:
【発明の名称】多層型電波吸収体及び該電波吸収体からなる電波暗室
Document Type and Number:
Japanese Patent JP2510880
Kind Code:
B2
Abstract:
A flat wave absorber having a conductive plate (23), a dielectric plate (22) on the conductive plate (23), and, a ferrite plate (21) on said dielectric plate, provides a wide operational frequency range from 30 MHz to 1 GHz with excellent attenuation characteristics, and an anechoic chamber mounting said wave absorber on inside surface of the chamber is provided. In a preferred example the thickness of said dielectric plate (22) is less than 25 mm, the thickness of said ferrite plate (21) is less than 7.5 mm, and real part of complex impedance of said ferrite plate (21) is less than 1.0 and close to 1.0. Said ferrite plate (21) is attached to said dielectric plate (20) in the form of tiles.
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Inventors:
ISHINO TAKESHI
MIURA TARO
WATANABE TAKASHI
KATSUMATA MASASHI
MIURA TARO
WATANABE TAKASHI
KATSUMATA MASASHI
Application Number:
JP18473188A
Publication Date:
June 26, 1996
Filing Date:
July 26, 1988
Export Citation:
Assignee:
TDK ELECTRONICS CO LTD
International Classes:
G12B17/02; E04B1/92; G01R29/08; G01R29/10; H01Q17/00; H05K9/00; (IPC1-7): H05K9/00; E04B1/92; G01R29/08; G12B17/02; H01Q17/00
Domestic Patent References:
| JP5324202A | ||||
| JP6094799A | ||||
| JP5513600B2 | ||||
| JP5547479B2 | ||||
| JP5549798B2 | ||||
| JP5615831Y2 |
Attorney, Agent or Firm:
Keiichi Yamamoto