| 摘要 |
<p>PURPOSE:To arrange two types of antennas without impairing each other's function, by providing a linear antenna on the surface of or inside a radome. CONSTITUTION:The inner thickness of a radome 1 is made to be a half as much as a service wavelength of an electrically flat antenna 2 or integral times as much as the half wavelength and is determined considering a transmission characteristic for the flat antenna 2. A log-periodic antenna 3 is built by forming a strip pattern of a conductor on the outer and inner surfaces of the radome 1. In this case, the feeding of power to the log-periodic antenna 3 is achieved simply by joining a coaxial cable. By building a plurality of log-periodic antennas 3 on the radome 1, a tracking signal can be synthesized for a target by a phase comparison monopulse system.</p> |
