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A wide bandwidth and wide beamwidth CDMA/GSM base station antenna array with low backlobe radiation

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2 Author(s)
Wong, T.P. ; Wireless Commun. Res. Center, City Univ. of Hong Kong, Kowloon, China ; Luk, K.M.

A wide bandwidth and wide beamwidth L-probe-fed patch antenna array with a novel design of grounded structure is proposed and tested. The antenna is made of stacked patches supported by plastic screws. The patches are proximity fed via L-shaped probe. By cutting slots in two vertical side walls of a box-shaped grounded structure, an impedance bandwidth larger than 20% (SWR<1.5), an H-plane beamwidth over 90°, and much reduction in backlobe radiation can be obtained. Details of the proposed antenna, simulation, and experimental results are presented and discussed.

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Vehicular Technology, IEEE Transactions on  (Volume:54 ,  Issue: 3 )