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Title: A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices
Authors: AbuTarboush, HF
Nilavalan, R
Cheung, SW
Nasr, KM
Peter, T
Budimir, D
Al-Raweshidy, H
Keywords: C-slot;Cognitive radio;Patch antenna;Reconfigurable antenna;Slot antenna;Small antenna;Switched antenna;Wideband antenna
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Citation: IEEE Transactions on Antennas and Propagation, 60(1): 36 - 43, Jan 2012
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 × 50 × 1.57 (3925 mm3), 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.
Description: This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 IEEE
ISSN: 0018-926X
Appears in Collections:Electronic and Computer Engineering
Dept of Electronic and Computer Engineering Research Papers

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