| 摘要 |
PURPOSE:To obtain a small-sized UHF band TV antenna with high gain by using the 1st triangle dual loop antenna element as an exciting antenna element, and 2nd triangle double loop antenna element as a reflector, and plural dipole antenna elements as a wave director. CONSTITUTION:The 1st and 2nd triangle double loop antenna elements 1, 2 are arranged in parallel at a prescribed distance (do) in a direction at a right angle to the loop faces in a way that regular loop antenna elements 1a, 1b and 2a, 2b are opposed to each other. Further, plural dipole antenna elements 3, 4, 5 are arranged opposite to the 2nd triangle double loop antenna element 2 at distances d1, d2 and d3 as shown in figure from the 1st triangle double loop antenna element 1. A current flows to the 1st and 2nd triangle double loop antenna elements 1, 2 respectively in opposite phase and the super-gain effect is caused between the triangle double loop antenna elements 1, 2 whose distance (do) is kept narrow.
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