Defective ground structure and complimentary split ring resonator loaded compact wideband antenna for radiolocation applications

(ProQuest: ... denotes formulae omitted.) 1.INTRODUCTION One of the basic requirements of any RF device design these days is to have a compact structure for which we need a compact antenna with high bandwidth and a considerable gain to meet the data transfer needs of multiple applications. [...]the reported 10-dB return loss bandwidth at both the bands is narrow. [...]these antennas do not serve the modern-day requirements [6-25]. If we can design a CSRR structure and a DGS structure such the generated new frequency by CSRR is nearer to the lower side of fundamental frequency of the antenna and the generated new frequency by DGS is nearer to the upper side of fundamental frequency of the antenna then we can increase the bandwidth of the antenna and this technique is presented in this communication. [...]in the next stage the radiating element is loaded with the CSRR structure to increase the bandwidth at the lower side of the resonating frequency and making the antenna a compact one. [...]in the further stage a DGS is loaded in the ground plane to increase the bandwidth of the antenna at the higher side of resonating frequency making the antenna a wideband antenna.