| 摘要 |
PURPOSE:To obtain an antenna with small size, light weight and high gain by arranging stereoscopically plural dielectric rods and providing an electromagnetic horn to a focus of the dielectric rod groups. CONSTITUTION:The dielectric rod 2 is arranged stereoscopically. The electromagnetic wave caught by the tip of each dielectric rod 2 is subjected to mode conversion, propagates in the dielectric rod 2, and is converted again into an electromagnetic wave from the the rear end and irradiated secondarily. In this case, all the secondary radiation electromagnetic waves are matched for the phase at the inlet of a circular electromagnetic horn 4 and then concentrated. The plural dielectric rods 2 arranged stereoscopically act like, so to speak, a lens and the electromagnetic horn 4 is placed at the focus. The reception antenna formed in this way is useful as the transmission antenna. Thus, the antenna with small size, light weight and high gain is obtained in this way. |
