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http://dx.doi.org/10.5515/KJKIEES.2018.29.10.739

Isolation Improvement in Vivaldi Antennas Using DSRR  

Yun, Juho (Department of Electrical and Computer Engineering, Sungkyunkwan University)
Park, Daesung (Hanwha Systems)
Jang, Donghyeok (Hanwha Systems)
Hwang, Keum Cheol (Department of Electrical and Computer Engineering, Sungkyunkwan University)
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Abstract
In this paper, a double split-ring resonator(DSRR) is proposed to improve the isolation between Vivaldi antenna elements. The DSRR was designed using a unit cell simulation and applied to a $1{\times}2$ Vivaldi antenna array to confirm the improvement in the isolation. The unit cell size of the proposed DSRR is $5mm{\times}5mm{\times}1.52mm$ and six unit cells are used. To verify the performance of the proposed DSRR, $1{\times}2$ Vivaldi antenna arrays with and without the DSRR were fabricated and measured. The results show an isolation improvement of 20 dB in the Vivaldi antennas with the DSRR when compared to the Vivaldi antennas without the DSRR.
Keywords
Absorber; Double Split Ring Resonator(DSRR); Isolation Improvement; Metamaterial; Vivaldi Antenna;
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