Effect of DGS on 1×2 Linear Array Antenna
Vasujadevi Midasala1, P Siddaiah2

1Vasujadevi Midasala, Research Scholar, Assistant Professor, Department of ECE, JNTUA, Koneru Lakshmaiah Education Foudation, Vaddeswaram, Gunntur (A.P), India.
2P.Siddaiah, Principal, University, College of Engineering & Technology, Acharya Nagarjuna University, Gunntur (A.P), India.
Manuscript received on 07 March 2019 | Revised Manuscript received on 20 March 2019 | Manuscript published on 30 March 2019 | PP: 1151-1154 | Volume-8 Issue-5, March 2019 | Retrieval Number: E3156038519/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Main objective of the proposed research is to investigate the effect of Defected Ground Structure (DGS) on linear array antenna. The proposed linear array is aimed to operate at 15GHz frequency. It is dimensioned at 50x50x1.6mm3, with two rectangular patches on Rogers RT/DUROID 5880 Substrate (Ɛr =2.2). The proposed model is designed and simulated using HFSS software using finite element method. The output parameters are obtained as |S11|= -15.9dB, |S21|=-14.24dB, VSWR is at 1.3 with Peak gain as 7.3 dB. Due to strong Mutual coupling observed, it is necessary to investigate the effect of DGS on 1×2 array antenna in terms of mutual coupling and other output parameters. It is evident that mutual Coupling is reduced by 42.95% and gain improved by 8.1% by integrating DGS to the proposed antenna.
Keyword: Linear Array Antenna, DGS, Mutual Coupling.
Scope of the Article: Microwave Antenna