| 摘要 |
PURPOSE:To attain the reception of a right rotatory circularly polarized wave and a left rotatory circularly polarized wave in one set of antenna without the adjustment of such as axial ratio by connecting a feeding circuit to both side of an antenna pattern group respectively and providing a changeover switch to connect a signal input or a termination part to its feeding point. CONSTITUTION:The plural antenna pattern groups 2 comprising traveling wave linear array antennas are formed on a base 1 and the feeding circuits 3a, 3b are formed to both sides of the pattern groups 2. The signal input Si and termination resistors Za, Zb, are changed over respectively by the changeover switch 4 comprising an interlock switch and they are connected to the feeding points 6a, 6b via coaxial cables 5a, 5b. In changing over the switch 4, the changeover of the direction of energized power is attained and both the right and the left rotatory circularly polarized waves are received.
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