In this paper, the metamaterials structure and some of its benefits in antenna design are presented. Metamaterials can be applied as defected ground structures, superstrates of antennas to enhance some parameters of the antenna such as bandwidth, gain or reduction in dimension. Depending on the values of permittivity and permeability to classify the metamaterials and apply them in the antenna design for different purposes. The metamaterial antennas are calculated and simulated based on commercial software such as CST Studio, HFSS.
Słowa kluczowe: Metamaterials, permittivity, permeability, antenna, parameters, improvement, gain, bandwidth, re-duce dimension.
1. INTRODUCTION In recent years, along with the development of wireless communication technology, the performance of the antennas in these systems demand must also in-crease. There are many methods for increase of the performance of the antenna have been using. One of them is using metamaterial structures for antenna design, which has been attracting the designers . In recent decades, a study of metamaterials for application in the field of science and technology has achieved great success. Metamaterials have been applied effectively in life, one of which is the use of metamaterials structures for antenna design. In 1968, the scientist Vaselago  studied a material which had, simultaneously, negative permeability ( ) and permittivity ( ) on a certain frequency band. He termed this material such as media left-hand (LH) which r, magnetic field vectors, and phase propagation vectors . However, these properties are not available in natural materials but only in artificial materials called metamaterials. Metamaterials (MTMs) are understood as an artificial material that is created by arranging homogeneous metal structures and having unusual properties that natural materials are not available. The size of an effective homogeneous structure to form a unit cell of metamaterials must be much smaller than the guided wavelength . Metamaterials are designed by arranging microstructures that are called "cells". These "cells" can be made from electrical, non-electrical or dielectric materials. These structures may be symmetric or asymmetric, isotropic or anisotropic. The arrangement of atoms can be in an orderly or chaotic manner, the purpose of which is to create the desired macro characteristics for the metamaterial. On the other hand, different structures give different types of metamaterials and applications, which are classified based on the permittivity and permeability values created by those structures . 2. CLA [...]
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