Wideband Gain-Enhanced Miniaturized Met Material-based Antenna for Wireless Applications
Gayathri Rajaraman1, M. Anitha2, K.K. Sood3

1Mrs. Gayathri Rajaraman , Assistant Professor , Department of ECE, Annamalai University, India.
2Dr. M. Anitha, Associate Professor of Electrical Engineering, Annamalai University, India.
3Dr. Khagindra Kumar Sood, Antenna Systems Group at the Space Applications Centre (SAC) of the Indian Space Research Organization (ISRO) at Ahmedabad, India.
Manuscript received on November 28, 2014. | Revised Manuscript Received on December 09, 2014. | Manuscript published on December 20, 2014. | PP: 20-22 | Volume-3, Issue-1, December 2014. | Retrieval Number: A0556123114/2014©BEIESP
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© The Authors. Published By: 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: Complementary Split Ring Resonators and Spiral Resonators; a category of artificially-devised metamaterial components; are loaded onto a microstrip patch and effectively utilized for obtaining wideband behaviour through staggered resonances and for radiator size reduction. A basic inset-fed patch antenna is loaded with a pair of CSRR on both the sides with a small change in dimension leading to closely overlapping resonances resulting in a wide bandwidth. Additonally, a spiral resonator is inscribed in the ground-plane under the patch metallization to suppress surface waves and to improve the radiation characteristics. The antenna is simulated and optimized using Ansys HFSS®, a benchmarked commercial software. Analyzed results of the proposed antenna are presented. Satisfactory impedance and radiation characteristics are obtained with ~ 87% radiation efficiency and 6% miniaturization.
Keywords: Metamaterials, CSRR (Complementary Ring Resonator), Spiral Resonators, Miniaturization.