| 摘要 |
An antenna arrangement for a Multiple Input Multiple Output (MIMO) radio system, the antenna arrangement transmitting and receiving in three essentially uncorrelated polarizations. The arrangement includes first and second patches, and four feeding points for feeding the first patch. In one mode of operation, the feeding points are fed in phase with each other, resulting in a first constant E-field in a slot between the edges of the patches. In a second operating mode, the first and second feeding points are fed 180 degrees out of phase with each other, resulting in a second E-field in the slot having a first sinusoidal variation. In a third operating mode, the third and fourth feeding points are fed 180 degrees out of phase with each other, resulting in a third E-field in the slot having a second sinusoidal variation uncorrelated with the first sinusoidal variation.
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