| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna assembly which reduces the correlation coefficient of three or more antennas, improves the diversity effect and enables the use on the ground. SOLUTION: A first and a second radiator plates 2, 3 each having a diameter or one side approximately equal to a 1/2 wavelength in terms of the electric length are disposed with some intervals on a ground plate 1. A first and a second feed ports 4, 5 provided on the first plate 2 are disposed with mutually orthogonal straight lines from these feed ports to the mid point of the plate 2, and a third and fourth feed ports 6, 7 provided on the second radiator plate 3 are disposed in the same positional relation. The straight line from the mid point between the first and the second feed ports 4, 5 to the mid point of the first radiator plate 2 or a straight line intersecting that straight line at the mid point of the radiator plate, and the straight line from the mid point between the third and fourth feed ports 6, 7 to the mid point of the second radiator plate 3 or a straight line intersecting that straight line at the mid point of the radiator plate, exist on one straight line. COPYRIGHT: (C)2004,JPO
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