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2013-08-02
Wideband DGS Circular Ring Microstrip Antenna Design Using Fuzzy Approach with Suppressed Cross-Polar Radiations
By
Progress In Electromagnetics Research C, Vol. 42, 177-190, 2013
Abstract
This paper presents a novel design of a circular ring defected ground structure (DGS) antenna for bandwidth enhancement using fuzzy logic approach. The ground plane of the antenna is defected by introducing circular ring sector type of defect beneath the circular ring patch. The position of the defect in the ground plane to attain the highest return loss and corresponding frequency is determined by using Fuzzy Interface System (FIS). The antenna resonates in X-band showing wideband characteristics with improved gain and reduced cross polar radiations. The return loss and analogous frequency obtained from simulated results and fuzzy system are compared and are in good agreement. The return loss and input impedance is measured experimentally and compared with the simulated results. Parameters like impedance bandwidth, VSWR and antenna gain are likewise calculated and discussed. The simulated results for the radiation pattern of the proposed design with polarization (Co-polar and Cross-polar) are also presented. The simulated impedance bandwidth of about 1.33 GHz (1.2 GHz experimentally) in X-band is obtained with a gain of 6.43 dB and also cross-polarized radiations have an isolation of 20 dB.
Citation
Rakesh Sharma Abhishek Kandwal Sunil Kumar Khah , "Wideband DGS Circular Ring Microstrip Antenna Design Using Fuzzy Approach with Suppressed Cross-Polar Radiations," Progress In Electromagnetics Research C, Vol. 42, 177-190, 2013.
doi:10.2528/PIERC13061504
http://www.jpier.org/PIERC/pier.php?paper=13061504
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