A Singular-Feed Circularly Polarized Metasurface Antennas Using Characteristic Mode Analysis
M. Dilruba Geyikoglu1*, Hilal Koc Polat2
1Taturk University, Engineering Faculty, Electrical Electronics Department, Erzurum, Turkey
2Erzurum Technical University, Engineering and Architecture Faculty, Electrical Electronics Department, Erzurum, Turkey
* Corresponding author: miracg@atauni.edu.tr
Presented at the 5th International Symposium on Innovative Approaches in Smart Technologies (ISAS2022), Online, Turkey, May 28, 2022
SETSCI Conference Proceedings, 2022, 13, Page (s): 49-52 , https://doi.org/10.36287/setsci.5.1.010
Published Date: 01 June 2022
In this paper, a singular-feed circularly polarized (CP) metasurface antenna with broad impedance bandwidth is presented. The antenna consists of modified slots with a lattice of 3 × 3 square conductive patches. Modes are selected and excited by modified slot by using characteristic mode analysis. Wideband characteristics are achieved thanks to the modified slots, leading to a new resonance. The circular polarization characteristics are generated by exciting via single feeding simultaneously. The positions of feeding are determined via characteristic mode analysis. Compared with conventional methods, the presented analysis can simplify the feeding structure and provided a compact antenna. The simulated results show an impedance bandwidth of 82% and 3 dB AR at 2.4 GHz Wireless Local Area Network (WLAN) bands.
Keywords - circularly polarized, singular-feed, wideband, metasurface antenna, characteristic mode analysis
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