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2013-03-05

Modified Square Slot Antennas for Broadband Circular Polarization

By Jianjun Wu, Xueshi Ren, Zhaoxing Li, and Ying-Zeng Yin
Progress In Electromagnetics Research C, Vol. 38, 1-14, 2013
doi:10.2528/PIERC13020105

Abstract

Square slot antennas with modified edges for broadband circular polarization are presented. Slots with only stubs or notches are studied and it is found that the axial ratio (AR) bandwidth is quite sensitive to the perturbations of the stubs and notches. To further enhance the AR bandwidth, slot antennas with combination of stubs and notches are proposed and wide 3-dB AR bandwidth of 15.5% (2.45-2.86 GHz) is obtained. By placing a conducting reflector at the rear of the slot, another modified square slot antenna is designed for practical applications, which achieves a 3-dB AR bandwidth of 6.5% (2.38-2.54 GHz) and peak gain of 8.7 dBic. Agreement between simulated and measured results is satisfactory.

Citation


Jianjun Wu, Xueshi Ren, Zhaoxing Li, and Ying-Zeng Yin, "Modified Square Slot Antennas for Broadband Circular Polarization," Progress In Electromagnetics Research C, Vol. 38, 1-14, 2013.
doi:10.2528/PIERC13020105
http://jpier.org/PIERC/pier.php?paper=13020105

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