| 摘要 |
A multiband omnidirectional antenna which includes a grounded face and an antenna element situated parallel to the grounded face, the antenna element having a first planar emitter, which has a planar design and extends parallel to the grounded face, a second planar emitter, which surrounds the first planar emitter at a distance, and at least two connection elements for connecting the first and the second planar emitters to each other.
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