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Title:
TELEVISION WAVE TRANSMISSION STEEL TOWER WITH RADIO WAVE ABSORPTION PLATE
Document Type and Number:
Japanese Patent JP2003264425
Kind Code:
A
Abstract:

To realize a television wave transmission steel tower with radio wave absorption plate, capable of efficiently absorbing radio waves by mounting the radio wave absorption plate.

The radio wave absorption plate 1 having structure by laminating a radio wave absorbing body on a metal reflector plate and further laminating a plastic plate on the radio wave absorbing body is mounted on the television wave transmission steel tower 21. Consequently, unnespurious radiation can be relieved by increasing the reflection loss of the radio waves that are radiated from antennas of other steel towers even under conditions that many steel towers for transmission are installed in a narrow area and the radio wave absorption plate 1 is made useful for countermeasures against the ghost in television broadcast.


Inventors:
ABE MASAHIRO
HONDA MASAO
NAKAGAWA KIYOSHI
IIDA HIROSHI
TSUCHISAKI YOSHIO
KUWAYAMA ICHIRO
Application Number:
JP2003024410A
Publication Date:
September 19, 2003
Filing Date:
September 17, 1999
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES
YOMIURI TELECASTING CORP
International Classes:
E04H12/08; H01Q17/00; H05K9/00; (IPC1-7): H01Q17/00; E04H12/08; H05K9/00
Attorney, Agent or Firm:
Inaoka Kozo (1 person outside)



 
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