| 摘要 |
An example antenna device includes a conductive ground plane and first and second antenna elements connected to the conductive ground plane through first and second feeding points, respectively. Directivities of the first and second antenna elements are arranged to be approximately perpendicular to each other. A phase adjusting circuit is configured to provide a phase difference of approximately 180 degrees between first and second received signals by the first and second antenna elements, respectively and a combining circuit is configured to combine the first and second received signals having a phase difference of approximately 180 degrees therebetween to obtain a combined signal. A radio unit is configured to process the combined signal.
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