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Title:
ABSORBER OF VHF AND UHF BAND RADIO WAVE
Document Type and Number:
Japanese Patent JPH01143297
Kind Code:
A
Abstract:

PURPOSE: To eliminate ghost troubles for TV radio wave almost completely, by providing a plural sets of combinations which connect main elements of VHF and UHF band radio wave antennas each other through a matching resistance in the arrangement direction of main elements and a direction crossing at a right angle thereto on a radio wave irradiation surface having properties to reflect VHF and UHF band wave.

CONSTITUTION: Combinations 2-1, 2-2,... connect main elements 3-1, 3-2,... of V/U band radio wave antennas through matching resistances 4-1, 4-2,.... A plurality of sets combinations are arranged on a body 1 having properties to reflect radiated V/U bane radio wave in a direction P-P wherein main elements 3-1, 3-2,... are arranged and a direction Q-Q which crosses at a right angle thereto. When a matching resistance is connected to a main element positioned on a surface of a body whereon wave is directed, the wave directed to a certain area around the combination is received and absorbed by the resistance. Therefore, if combination of antenna and resistance are arranged at definite intervals in all directions through irradiation area, the entire irradiated surface is effective as a radio wave absorber.


Inventors:
OTA AKIRA
SAKUMA SUMIHISA
Application Number:
JP30100587A
Publication Date:
June 05, 1989
Filing Date:
November 28, 1987
Export Citation:
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Assignee:
NIPPON TELEVISION NETWORK
International Classes:
H01Q17/00; H05K9/00; (IPC1-7): H01Q17/00; H05K9/00
Domestic Patent References:
JPS521226U1977-01-07
Attorney, Agent or Firm:
Eisuke Suzuki