Variable directivity antenna aparatus
AssigneeDX Antenna Company, Limited
InventorsEiji Shibuya, Kiyotaka Tatekawa, Takayuki Yoshii
Life of this patent
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Abstract
A variable directivity antenna apparatus (1) includes an output terminal (40) at which reception signals transmitted through a coaxial cable (42) are outputted. The directivity pattern of the antenna apparatus (1) is varied in response to a directivity control signal supplied to the output terminal (40) through the coaxial cable (42). The variable directivity antenna apparatus (1) further includes changeover switches (8, 12, 14, 22, 32, 34, 38) operated to fix the orientation of directivity in a predetermined direction in response to the coupling of a power supply adapter (64).
Claims7
A variable directivity antenna apparatus having an output terminal at which a reception signal transmitted through a transmission line is developed as an output, said variable directivity antenna apparatus having the orientation of directivity thereof varied in response to a directivity control signal supplied to said output terminal through said transmission line;
- wherein said variable directivity antenna apparatus further includes switching means for fixing the direction of directivity of said variable directivity antenna apparatus to a predetermined direction, when so operated.
Dependencies are inferred from the claim text.