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International Journal of Antennas and Propagation
Volume 2017, Article ID 7515264, 12 pages
https://doi.org/10.1155/2017/7515264
Research Article

A Compact Triple-Band Negative Permittivity Metamaterial for C, X-Band Applications

Department of Electronics and Communication Engineering, Visvesvaraya National Institute of Technology (VNIT), South Ambazari Road, Nagpur, India

Correspondence should be addressed to Dushyant Marathe; moc.liamg@ehtaramtnayhsud

Received 6 July 2017; Accepted 18 September 2017; Published 18 October 2017

Academic Editor: Ikmo Park

Copyright © 2017 Dushyant Marathe and Kishore Kulat. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report a new design of triple-band electric metamaterial resonator (TBEMR) based on integration of open delta loops within square ring resonator. This metamaterial resonator has three distinct -negative regions (ENG) over C, X frequency bands. The transmission and reflection response of the proposed subwavelength resonator is analyzed using full-wave electromagnetic solver Ansys HFSS to demonstrate the presence of electrical resonances within frequencies 4–12 GHz. Effective medium parameters permittivity and permeability are extracted from simulated complex scattering parameters to verify existence of ENG regions. The investigations are also carried out regarding dependence of resonant frequencies on design parameters of the TBEMR unit cell. The effective medium ratio for proposed subwavelength resonator is compared with various other metamaterial resonators to indicate its compact nature.