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.
SAKUMA SUMIHISA
JPS521226U | 1977-01-07 |