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http://dx.doi.org/10.7236/JIIBC.2017.17.5.187

A Study on the effects of CSRR-metamaterial on Microstrip Comb-line Array Antennas  

Ki, Hyeon-Cheol (Dept. of Electronic Engineering, Gachon University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.17, no.5, 2017 , pp. 187-192 More about this Journal
Abstract
We investigated the effects of the CSRR-metamaterial on microstrip comb-line array antennas. Microstrip comb-line array antennas was designed with 12 radiators, gain of 16.09dBi and bandwidth of 0.24GHz in the 24GHz ISM band. The designed antenna had radiation beam perpendicular to the antenna plane, co-polarization gain of 16.09dBi and cross-polarization gain of -10.86dBi. the CSRR-metamaterial increased largely the impedance bandwidth of the antenna from 0.24GHz to 3.6GHz. however as co-polarization gain became 10.08dBi and cross-polarization gain became 14.1dBi, co-polarization was mixed with cross-polarization. And the antenna gain lowered by 1.99dB. On the investigation of the dependence on the split-direction of the CSRR rings, it showed nearly the same characteristics for up-splitted ring used case and down-splitted ring used case. However in the case of arranging up-splitted ring and down-splitted ring in alternation, co-polarization gain decreased to -1.29dBi and cross-polarization gain increased to 13.9dBi, which meant the wave was transited to cross-polarization majority wave.
Keywords
waveguide transition; antipodal finline; waveguide-microstrip transition; millimeter wave;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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