A newly proposed multi-band rectangular patch antenna using defected ground structures

A new microstrip patch antenna that resonates on more than one frequencies and yields sufficiently high bandwidth is presented. Several variations of the proposed design are simulated using practically used dielectric materials. Detailed input return loss plots, VSWR plots, and radiation pattern plots are presented. A comparative study of all simulated results is presented. The design that yields the best performance is chosen for further optimization using deliberately-created defects in the ground plane, called Defected Ground Structures (DGS). It is observed that improvement in bandwidth is achievable through using the DGS.