| 摘要 |
PURPOSE:To reduce the mutual coupling between adjacent radiation elements by arranging adjacent V-shaped dipoles in the relation of V shape and inverse-V shape. CONSTITUTION:Straight line conductors 1a, 1b of V-shaped dipoles 5-6 adjacent each other to a reflection plate 3 are arranged while being tilted toward the side of then reflection plate 3 or the opposite side to the reflection plate 3 so as to form the relation of the V shape and the inverse-V shape. Through the arrangement as above, the induced electromotive force on the dipole 6 is small. That is, the coupling between elements is reduced. In selecting an open angle as 90 deg., since the current vectors on then straight line conductors are made orthogonal to each other, the mutual coupling is minimized. Thus, a desired element feeding current is obtained and an excellent active impedance characteristic is obtained.
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