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2014-08-15
Dual-Band Dual-Sense Circularly Polarized Slot Antenna with an Open-Slot and a Vertical Stub
By
Progress In Electromagnetics Research Letters, Vol. 48, 51-57, 2014
Abstract
A new dual-band dual-sense circularly polarized (CP) slot antenna is designed in this paper. The proposed antenna is composed of a rectangle patch and a modified ground plane. By opening a U-shaped open-slot and loading a vertical stub to the ground plane, a dual-sense CP performance is achieved for two frequency bands. A bevel is cut on the patch to improve the impedance matching. The antenna is fabricated on a low-cost FR4 substrate and fed by a coplanar waveguide (CPW) structure. The antenna has been investigated numerically, and a prototype was experimentally measured. Experimental results show that the measured 10-dB return loss impedance bandwidths are 18.3% (2.72-3.27 GHz) for the lower band and 23.7% (4.65-5.90 GHz) for the upper band, and the measured 3-dB axial ratio (AR) bandwidths for the lower and upper bands can be up to 28.4% (2.48-3.30 GHz) and 26.3% (4.63-6.03 GHz), respectively.
Citation
Bo Chen, and Fu-Shun Zhang, "Dual-Band Dual-Sense Circularly Polarized Slot Antenna with an Open-Slot and a Vertical Stub," Progress In Electromagnetics Research Letters, Vol. 48, 51-57, 2014.
doi:10.2528/PIERL14062104
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