| 摘要 |
PROBLEM TO BE SOLVED: To provide a multibeam antenna capable of being downsized and low-profiled, the directivity of which can be switched in a plurality of directions. SOLUTION: The multibeam antenna is provided with an antenna element array comprising; a single feeding element 11; and N (N: a natural number) parasitic elements 12, 13 arranged before and after the feeding element 11, and a switching element 20 varies the electric length of at least one of the N parasitic elements 12, 13. COPYRIGHT: (C)2006,JPO&NCIPI
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