A Negative Index Metamaterial to Enhance the Performance of Miniaturized UWB Antenna for Microwave Imaging Applications

A new, compact planar wideband negative index metamaterial based on a modified split ring resonator (SRR) is studied to enhance performance of ultrawideband antenna. A compact, metamaterial (MTM)-inspired microstrip antenna is presented for microwave imaging system (MIS) application. Two layers of left-handed metamaterial array (2 × 4) of the unit cell are placed on the radiating patch and the ground plane, respectively. Each left-handed metamaterial (LHM) unit cell was constructed by modifying a square split ring resonator (SRR), resulting in negative permeability and permittivity with a stable negative refractive index. The results shows that it has a significant impact on the performance of conventional patch antenna in terms of transmission co-efficient, efficiency and low loss. Compared to antenna without LHM, it is shown that the bandwidth is significantly broadened up to a few megahertz and becomes more convergent leading to the achievement of desired properties for ultra-wideband (UWB) applications leading to microwave imaging. The proposed MTM antenna structure is fabricated on commercially-available, flame-retardant material of size 26 × 22 × 1.6 mm3 with 4.6 dielectric constants, due to its low cost and convenience for making multilayer printed circuit boards (PCBs). The antenna achieves 3.1 GHz to 10.71 GHz of impedance bandwidth (−10 dB), which covers the full UWB band. The use of double-layer negative index MTM unit cells enhances UWB performance, and the improved radiation efficiency, nearly directional radiation pattern, acceptable gain, stable surface current and negative refractive index make this MTM antenna a suitable candidate for UWB applications.

[1]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[2]  G. Eleftheriades,et al.  Planar negative refractive index media using periodically L-C loaded transmission lines , 2002 .

[3]  Natalia K. Nikolova,et al.  Co-polarised and cross-polarised antenna arrays for breast, cancer detection , 2007 .

[4]  Natalia K. Nikolova,et al.  TEM Horn Antenna for Ultra-Wide Band Microwave Breast Imaging , 2009 .

[5]  Zhuo Xu,et al.  Broadband planar left-handed metamaterials using split-ring resonator pairs , 2009 .

[6]  Elise C. Fear,et al.  Cross-Vivaldi antenna for breast tumor detection , 2009 .

[7]  William G. Whittow,et al.  Compact microstrip band stop filter using SRR and CSSR: Design, simulation and results , 2010, Proceedings of the Fourth European Conference on Antennas and Propagation.

[8]  Olivier J. F. Martin,et al.  A broadband and high-gain metamaterial microstrip antenna , 2010 .

[9]  Xiaopeng Zhao,et al.  Low losses left-handed materials with optimized electric and magnetic resonance , 2010 .

[10]  D. E. Anagnostou,et al.  Evaluation of the Quality Factor, Q, of Electrically Small Microstrip-Patch Antennas [Wireless Corner] , 2011, IEEE Antennas and Propagation Magazine.

[11]  Xianming Qing,et al.  A High Gain Antenna With an Optimized Metamaterial Inspired Superstrate , 2012, IEEE Transactions on Antennas and Propagation.

[12]  Yahong Liu,et al.  Zero Index Metamaterial for Designing High-Gain Patch Antenna , 2013 .

[13]  Fernando L. Teixeira,et al.  Electrically small, complementary electric-field-coupled resonator antennas , 2013 .

[14]  Alyani Ismail,et al.  An Aligned-Gap and Centered-Gap Rectangular Multiple Split Ring Resonator for Dielectric Sensing Applications , 2014, Sensors.

[15]  Nasser Ojaroudi,et al.  UWB/Omni-Directional Microstrip Monopole Antenna for Microwave Imaging Applications , 2014 .

[16]  M. K. Meshram,et al.  Metamaterial-based UWB antenna , 2014 .

[17]  Ibrahim Akduman,et al.  Microwave breast phantom measurements with a cavity-backed Vivaldi antenna , 2014 .

[18]  Mohammad Tariqul Islam,et al.  A Negative Index Metamaterial-Inspired UWB Antenna with an Integration of Complementary SRR and CLS Unit Cells for Microwave Imaging Sensor Applications , 2015, Sensors.

[19]  Haslina Arshad,et al.  Microwave Imaging Sensor Using Compact Metamaterial UWB Antenna with a High Correlation Factor , 2015, Materials.

[20]  Mohammad Tariqul Islam,et al.  A Miniaturized Antenna with Negative Index Metamaterial Based on Modified SRR and CLS Unit Cell for UWB Microwave Imaging Applications , 2015, Materials.

[21]  Mohammad Tariqul Islam,et al.  A new high performance Hibiscus petal pattern monopole antenna for UWB applications , 2016 .

[22]  Shiban K. Koul,et al.  FSS Properties of a Uniplanar EBG and Its Application in Directivity Enhancement of a Microstrip Antenna , 2016, IEEE Antennas and Wireless Propagation Letters.

[23]  S. S. Islam,et al.  A New Compact Double-Negative Miniaturized Metamaterial for Wideband Operation , 2016, Materials.

[24]  Mohammad Tariqul Islam,et al.  Design and parametric investigation of directional antenna for microwave imaging application , 2017 .