| 摘要 |
PROBLEM TO BE SOLVED: To realize an antenna system capable of reducing a correlation coefficient of three or more antennas, improving effects of diversity, and being used on a ground. SOLUTION: A radiation plate 2 and a radiation plate 3 each having a diameter and one side of an 1/2 electric length are provided on a ground plate 1 at an arbitrary interval. Straight lines 10, 11 provided on the plate 2 cross at right angles, and straight lines 12, 13 cross at right angles. The line 10 has the same electric length as that of the line 12, and the line 11 has the same electric length as that of the line 13. The plates 2, 3 are arranged so that the lines 10, 12 or the lines 11, 13 do not exist on the same line, and the electric length of the line 10 is different from that of the line 11. COPYRIGHT: (C)2004,JPO
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