MULTIPLE PATTERN ANTENNA HAVING FREQUENCY SELECTION ZONE OR POLARIZED WAVE SENSING ZONE

摘要

PROBLEM TO BE SOLVED: To provide a multiple pattern antenna where a plurality of antenna patterns with different frequencies or different polarization can be obtained from a single reflector. ;SOLUTION: A reflector antenna 10 is provided with a reflector 18 and a radiation source 20, and the radiation source emits a plurality of RF signals with pre-selected frequencies or polarization to the reflector. The reflecting body has a plurality of zones 22-26, and each zone reflects a pre-selected RF signal. The reflecting body generates a plurality of antenna patterns from the reflected RF signals. A pre-selected shape and size is formed to each zone so that the antenna patterns have a desired shape and beam width characteristic.;COPYRIGHT: (C)2000,JPO