Title:
ELECTROMAGNETIC SHIELDING EVALUATION DEVICE
Document Type and Number:
Japanese Patent JP2723851
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To evaluate and measure electromagnetic shielding with accuracy even in a high frequency range.
SOLUTION: In this device, two metal plates 1, 2 with a width 2a ten times or more as wide as the wavelength of the lowest usable frequency are disposed between parallel metal plates, disposed in parallel with a space of half the wavelength or less, with a prescribed space and in such a way as to be linear between an input dielectric rod 3 and an output dielectric rod 4 with a width of a quarter or less of the wavelength, and a sample 5 for measurement is disposed between them. The dielectric rods 3, 4 are disposed in such a way that the respective one end taper parts 31, 41 project outside of the metal plates 1, 2. Electromagnetic wave is led into the dielectric rod 3, and the electromagnetic wave transmitted through the sample 5 is outputted from the dielectric rod 4.
Inventors:
HATAKEYAMA KENICHI
TOGAWA HITOSHI
TOGAWA HITOSHI
Application Number:
JP22296495A
Publication Date:
March 09, 1998
Filing Date:
August 31, 1995
Export Citation:
Assignee:
NIPPON DENKI KK
TOOKIN KK
TOOKIN KK
International Classes:
G01R29/08; G01N22/00; (IPC1-7): G01R29/08; G01N22/00
Domestic Patent References:
| JP345034A | ||||
| JP645809A |
Attorney, Agent or Firm:
Matsuura