ABSTRACT
The design of a compact planar monopole antenna featuring ultra-wideband characteristics and simultaneous signal rejection in the 6.5-8.5 GHz band is presented here. Five different antenna configurations have been proposed with the same RF performance and radiation characteristics. Co-Planar Waveguide(CPW) is used to feed the radiating element. The presented results depict that the prototype antenna of 47×47 mm2 dimension has a bandwidth from 3 GHz to more than 10.6 GHz excluding the rejection band. Measured peak gain of the fabricated prototype antenna varies from 1.5 dBi to 5.5 dBi except the notch band. This gain can be improved by 3 dB (avg.) implementing honeycomb superstrate along with metallic shield.
