-8-Comparative study of Different shape of single Patch Electromagnetic Band Gap Structures for Planar Antenna application

O. Ayop, M. K. A. Rahim “Comparative study of Different shape of single Patch Electromagnetic Band Gap Structures for Planar Antenna application”, Indonesia-Malaysia Microwave Antenna Conference (immac 2010), Jakarta, Indonesia 11-12 June, 2010.

Abstract—In this paper, a comparative study of different shapes of electromagnetic band gap (EBG) structure is presented. Four different shapes of EBG structure are investigated which are mushroom-like EBG structure, circular EBG structure, fractal EBG structure, and slotted patch EBG structure. The method of suspended transmission line is used to determine the characteristic of stop band frequency of each shape. The single element design is studied where each shape requires the same area which is 12 mm x 12 mm. The value of forwards transmission coefficient, S21 is investigated for each case. From the simulation, each shape gives different range of stop band frequency. It is found that the slotted patch EBG gives the best result which can obtain lowest operating frequency, dual frequency band and excellent S21 value.

Index Terms—Electromagnetic band gap, Stop band frequency, Method of suspended transmission line, antenna application.