Comparative Study of UWB Microstrip Antennas with Different Defected Ground Structures

Abstract

In this paper microstrip antenna with different defected ground structures are compared on the basis of their bandwidth, gain and radiation properties. It is observed that these antennas can operate in ultra wide band frequency range with different notches. Comparison of these antenna structures reveals that these antennas show multiple band operation with different number of pass bands and bandwidths. It has been found that antenna with U shaped slot has maximum number of pass bands and efficiency over the antennas having E shaped slot and L shaped slot.