| 摘要 |
A broad beam width antenna array, preferably having 360 degrees of azimuth coverage, which also has broad frequency bandwidth, for use in a wireless network system is disclosed. In a preferred embodiment the antenna array comprises a planar dielectric substrate, micro strip elements on both sides of the dielectric substrate, and a corporate feed structure employing parasitic conductive beam width enhancing tubes as feed line conduits. The antenna array comprises dipole radiating elements formed on both sides of the dielectric substrate and a balanced feed network feeding each dipole arm. The shape of the dipole is symmetric and the overall structure, including feed network, preferably has a ┌-shape when viewed from either side of the dielectric substrate. Disposed proximate to each dipole arm are bandwidth enhancement coplanar micro strips which are parallel to each dipole arm and at least partially overlapping each other.
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