Comparative analysis of performance improvement of MPA by using EBG and DGS structures

This paper present different design methods to improve the performance of MPA. A comparative analysis of EBG and DGS structures in terms of performance has been given. The proposed DGS structure improves gain, efficiency and the return loss of the antenna. The antenna w/o EBG and DGS resonates at 2.4 GHz offering bandwidth of 67.8 MHz. Three different types of DGS structure have been designed and their effects on the antenna performance have been tabulated. The DGS structure provides good matching with reduction in size more than 4%.