| 摘要 |
PURPOSE:To obtain an excellent beam deflection characteristic even with plural number of primary radiators by forming the titled antenna by a main reflection mirror and two auxiliary reflection mirrors so as to satisfy the sinusoidal conditions by the two auxiliary reflection mirrors. CONSTITUTION:A spherical mirror 1 is used as a main reflection mirror, the two auxiliary reflection mirrors 6, 7 are provided between a horn 3 and the spherical mirror 1 and the mirror face coordinate of the auxiliary reflection mirrors is obtained by the conditions of the reflection, power and constant optical path length being the geometrical method. The sinusoidal condition is used as the power condition. That is, the multi-beam with excellent beam deflection characteristic is formed by satisfying the sinusoidal condition as well as the phase correction. Moreover, in using the antenna as a multi-beam antenna, plural horns only have to be arranged near the horn 3.
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