Abstract
This paper presents a novel wideband polarization reconfigurable antenna. A coplanar waveguide (CPW)-to-Slotline transition is used to feed the antenna. In Slotline mode, the antenna excites horizontal polarization (HP) and in CPW mode it allows operation in left-hand circular polarization (LHCP), right hand circular polarization (RHCP) and vertical polarization (VP). An excellent performance with orthogonal circular polarizations at 2.4 GHz and orthogonal linear polarization at 1.9 GHz is obtained. Experimental and Simulation results are presented. Experimental results show 28.8% impedance bandwidth (10 dB Return Loss) and 3dB axial ratio bandwidth of 14.8% for Circular polarization (CP). The antenna architecture would be of interest for Wireless Local Area Networks (WLAN) and Universal Mobile Telecommunication Systems (UMTS) applications.
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