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Title:
RADIO WAVE SHIELD BOX
Document Type and Number:
Japanese Patent JP2005017241
Kind Code:
A
Abstract:

To enable measurement of the transmitting power of a radiocommunication apparatus whose flat antenna has been integrated with a transmitting and receiving circuit and a signal processing circuit and can not be detached, and enable a communication test between radiocommunication apparatuses for base stations without radiation of an electric wave into a space.

A radio wave shield box to be provided is in the shape of a box whose one face is open, and its bottom face makes a flat antenna whose electric wave transmitting and receiving face looks toward the inside, and to the inner faces of its side walls wave absorbers are fitted. When an integrated-type radiocommunication apparatus is housed so that their flat antennas may face each other, and a wattmeter or spectrum analyzer is connected to the feeding inlet of the flat antenna in the bottom face and a coaxial waveguide transducer, the transmitting power of the apparatus can be measured. A communication test between two radiocommunication apparatuses can be performed, by connecting with a coaxial cable, the coaxial waveguide converter of an apparatus to a coaxial waveguide converter fitted to the waveguide section of the other radiocommunication apparatus for base stations after its antenna has been detached.


Inventors:
MIURA YOHEI
TANIGUCHI TORU
HONMA FUMIHIRO
Application Number:
JP2003186150A
Publication Date:
January 20, 2005
Filing Date:
June 30, 2003
Export Citation:
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Assignee:
JAPAN RADIO CO LTD
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G01R29/10; H01Q17/00; H04B7/26; H04B17/00; H04W24/00; H04W24/08; H04W88/02; (IPC1-7): G01R29/10; H01Q17/00; H04B7/26; H04B17/00
Attorney, Agent or Firm:
Yoshihiro Yawata