Modelling of carbon nanotubes with different structures at millimeters wavelength antennas

Abstract

The accelerated technological development in different fields and applications led to the emergence of an urgent need to present new materials for the design and implementation of modern antennas which are characterized by upgrade characteristics. These characteristics need to have the required materials for designing these antennas with remarkable properties that have durable despite the time or environment changes. Therefore, the main aim of this research is to present the materials which have good properties as well as have the ability to meet the required demands of the rapidly growing technological development in antenna applications. The basic materials proposed in this work are based on the carbon nanotubes (CNTs) properties and their structures as well as the carbon nanotubes composite materials. The problem statement of this research is present for the first time adequate modelling approaches for different CNTs structures and proposed a new material structure for antenna applications. This research also aims to estimate the electromagnetic (EM) behaviour of these materials through CST (MWS) for the purpose of antenna design and applications. Therefore, to achieve this aim, the mathematical analysis for these materials are done in order to compute their important parameters. Moreover, in this work, two modelling approaches are presented for both single-walled CNTs (SWNTs) and bundle of SWNTs (BSWNTs). Where, the equivalent nano-solid tube material (NSTM) model is utilized for the personification of the SWNTs and the equivalent solid conductor model (SCM) for the personification of the B-SWNTs. Hence, these modelling approaches presented in this study are indicate to benefit the estimation of the EM parameters of the dipole antennas that are designed based on these materials. Interestingly, the dipole antenna model is employed for studying the EM properties of these materials and their corresponding models. The validation process of the presented modelling approaches is achieved based on a comprehensive comparison for these models with the corresponding original related work.