• MAHAJABEENA AKHTER
• Dr. Rakesh Kumar Joon

In this paper we have discussed about Koch curve fractal defected ground structure (DGS) for mobile applications is presented. Asymmetric perpendicular shape slots are incorporated on circular patch for getting circular polarization. The advantages of incorporation of Koch curve fractal DGS for improvement of performance parameters of circular polarized antenna presented. It is shown that with every progressive stage of fractal DGS iteration, in addition to reduction in size of the patch, other performance parameters of the antenna such as return loss, VSWR, 10 dB impedance bandwidth and radiation efficiency also show significant improvement in their values at cost of marginal reduction of the gain. The design, evaluation and comparison of the proposed antenna with conventional simple circular disc circular polarized antenna without DGS along with intermediate and final iterations of Koch curve fractal DGS are illustrated. A compact proximity fed circular disc antenna has been proposed for mobile satellite communication, specifically for 1.675GHz frequency.

Defected ground structure, return loss, VSWR

"DESIGN AND ANALYSIS OF MICROSTRIP ANTENNA WITH FRACTAL DEFFECTED GROUND STRUCTURE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.44-47, June 2019, Available :http://www.jetir.org/papers/JETIR1908009.pdf

"DESIGN AND ANALYSIS OF MICROSTRIP ANTENNA WITH FRACTAL DEFFECTED GROUND STRUCTURE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp44-47, June 2019, Available at : http://www.jetir.org/papers/JETIR1908009.pdf