Design and Implementation of a Dual Excited Planar Circular Array Antenna for Base Stations
Veneela Ammula (1), Stuart M. Wentworth (1), Sadasiva M. Rao (2)
(1) Auburn University Dept. of ECE, Auburn, Alabama, USA, (2) Naval Research Laboratory, Washington, DC, USA
Switched beam smart antenna systems can improve the capacity and coverage for wireless communications. Smart antennas radiate narrow beams to serve different users; for users that are separated spatially, focused beams allow for the same frequency to be used in the same cell, thus greatly increasing the capacity of the system. In a switched beam system, the antenna switches between multiple beams that are pointing in predetermined directions. We present a planar circular array antenna for use in mobile wireless communications base stations. The prototype antenna, shown in Figure 1, could be modified to be able to electronically steer the main beam to provide 360° coverage around the base station.
IEEE Antennas and Propagation Society International Symposium (APSURSI)
2010
July
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