Effect of Metamaterial Cells Array on a Microstrip Patch Antenna Design

Adelson M Lima,José P Da Silva,Nilson Henrique O Cunha

doi:10.1590/2179-10742020v19i3886

Abstract

Abstract In this paper, a microstrip patch antenna (MPA) design was developed to verify the performance of a metamaterial cell array (MTM) Capacitive Loaded Loop (CLL) immersed in the substrate. The metamaterial was obtained from metal laminates designed inside a dielectric material, with dimensions carefully calculated to have the effective negative permittivity and permeability, consequently the negative refractive index, in a certain frequency range. In this case, the geometric control of the unit cell parameters allowed its organization in a periodic arrangement to be immersed in the MPA substrate. Simulated and experimental results were obtained and compared for some parameters of the antenna, which showed a good relationship between MTM and MPA performance.

Highlights

The continuous search for new technologies has led researchers to study more and more the application of metamaterials (MTMs) in wireless communication system [1]
Several geometries are characterized as metamaterial cell array (MTM) structures that are applied in the patch, within the substrate and in the ground plane of microstrip patch antenna (MPA), aiming to optimize their performance and its parameters [1], [3]-[15]
For a miniaturized antenna to operate in five bands [12], the ring-shaped patch used an MTM resonator type Rectangular Complementary Split Ring Resonator (RCSRR) inside the ring

Summary

INTRODUCTION

The continuous search for new technologies has led researchers to study more and more the application of metamaterials (MTMs) in wireless communication system [1]. According to [17], an antenna with an MTM type Complementary Split Ring Resonators (CSRRs) in hexagonal form has been proposed It achieved a 5.7% reduction in operating frequency, reflection coefficient (S11) from –34 dB at 2 GHz, greater gain and the radiation is unchanged. In a UWB antenna [22], the authors used a Symmetric Split Ring Resonator (SSRR) MTM cell in divided circular rings It was obtained a BW of 128.3% and a gain of 6.12 dBi. a combination of square resonant rings (SRR) and complementary split ring resonator (CSRR) [23], was performed on a 2.4 GHz antenna. In [25], a sensor was proposed that uses a microwave technique with coupled antenna It used a rectangular split ring resonator (SRR) MTM cell.

METAMATERIAL DESIGN

RESULTS AND DISCUSSIONS

CONCLUSION