| 摘要 |
PROBLEM TO BE SOLVED: To provide a low profile antenna structure having directivity that can be controlled with a high degree of freedom. SOLUTION: Feed elements 11, 12 of an inversed F type antenna structure are disposed on a Y-axis across an origin at an interval ofλ/4; non-feed elements 13, 14 of an inversed F type antenna structure are disposed on an X-axis across an origin at an interval ofλ/4; the feed elements 11, 12 are connected with power feeding circuits 21, 22 feeding power with a desired phase difference between the feed elements; and the non-feed elements 13, 14 are connected with variable reactors 23, 24, wherein the electric length of each non-feed elements can be changed according to a reactance value. COPYRIGHT: (C)2008,JPO&INPIT
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