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A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices

AbuTarboush, Hattan F. and Nilavalan, R. and Cheung, S.W. and Nasr, K.M. and Peter, T. and Budimir, Djuradj and Al-Raweshidy, H.S. (2012) A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices. IEEE Transactions on Antennas and Propogation, 60 (1). pp. 36-43. ISSN 0018-926X

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Official URL: http://dx.doi.org/10.1109/TAP.2011.2167925

Abstract

A reconfigurable wideband and multiband C-Slot patch antenna with dual-patch elements is proposed and studied. It occupies a compact volume of 50 x 50 x 1.57 (3925mm3), including the ground plane. The antenna can operate in two dual-band modes and a wideband mode from 5 to 7 GHz. Two parallel C-Slots on the patch elements are employed to perturb the surface current paths for excitation of the dual-band and the wideband modes. Two switches, implemented using PIN diodes, are placed on the connecting lines of a simple feed network to the patch elements. Dual-band modes are achieved by switching ON either one of the two patch elements, while the wideband mode with an impedance bandwidth of 33.52% is obtained by switching ON both patch elements. The frequencies in the dual-band modes can be independently controlled using positions and dimensions of the C-Slots without affecting the wideband mode. The advantage of the proposed antenna is that two dual-band operations and one wideband operation can be achieved using the same dimensions. This overcomes the need for increasing the surface area normally incurred when designing wideband patch antennas. Simulation results are validated experimentally through prototypes. The measured radiation patterns and peak gains show stable responses and are in good agreements. Coupling between the two patch elements plays a major role for achieving the wide bandwidth and the effects of mutual coupling between the patch elements are also studied.

Item Type:Article
Research Community:University of Westminster > Electronics and Computer Science, School of
ID Code:9626
Deposited On:24 Aug 2011 18:27
Last Modified:30 Apr 2012 13:23

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