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Curve Fitting Inspired Particle Swarm Optimization of CPW Fed Patch Antenna With Defected Ground Structure

Romil Kumar*, Nancy Gupta**, Vikrant Sharma***

* M.Tech Student, Electronics and Communication Department, CTIEMT, Shahpur, Jalandhar, India

** Assistant Professor, Electronics and Communication Department, CTIEMT, Shahpur, Jalandhar, India.

*** Principal, CT Polytechnic College, Shahpur, Jalandhar, India

Periodicity:May - July'2015
DOI : https://doi.org/10.26634/jcs.4.3.3456

Abstract

This paper presents proficient scheme of design optimization using curve fitting inspired PSO algorithm for improvisation of coplanar ground plane in CPW fed Microstrip Patch Antenna. Finite element based EM solver is employed for analyzing the performance of patch radiator. Tapering in ground plane is introduced for enhancement of operational bandwidth of patch antenna. Curve fitting technique is implemented over the data set generated by varying tapered length and width of ground plane to predict mathematical equations relating different antenna parameters. Using these equations,a fitness function is created for PSO based design optimization. The discussed approach for design optimization of CPW fed patch antenna results in better impedance matching with bandwidth enhancement of approximately 200 % (6.40 GHz-9.41 GHz), when compared to manual design optimization (6.46 GHz-7.44 GHz and 8.22 GHz-9.83 GHz) using trial and error method.The application of optimization techniques in electromagnetics has hindrance due to lack of appropriate fitness functions. The aim of the study is to use curve fitting approach for the generalization of fitness function so as to optimize the structure using a robust optimization algorithm instead of relying on common approach of trial and error method.

Keywords

Coplanar Waveguide, Microstrip Patch Antenna, Curve Fitting, Particle Swarm Optimization, Defected Ground Plane

How to Cite this Article?

Kumar, R., Gupta, N., and Sharma, V. (2015). Curve Fitting Inspired Particle Swarm Optimization of CPW Fed Patch Antenna With Defected Ground Structure. i-manager’s Journal on Communication Engineering and Systems, 4(3), 30-37. https://doi.org/10.26634/jcs.4.3.3456

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