| 摘要 |
An antenna includes a ground plane, a match portion, and a radiation portion. The ground plane is used for grounding. The match portion is parallel to the ground plane, and is connected to the ground plane. The radiation portion is connected to one end of the match portion, and extends upwardly with respect to the ground plane. The radiation portion can be a spiral element or a meandrous element. The radiation portion can also include a main body extending upwardly with respect to the ground plane, and a plurality of branches extending parallelly along a same direction from the main body.
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