Ultra-wideband printed circular monopole antenna array

In this paper, a printed monopole circular antenna array concept for use in the frequency 3.1 GHz - 10.6 GHz is presented. The design uses the printed monopole disc antenna in a four-element array to produce high gain and to shape the radiation pattern while maintaining good match of the frequency range of interest. The four printed disc monopole antennas are fed using broadband T-junction power divider. The proposed concept has been verified by simulations and finally confirmed by measurement which verifies a -10-dB match bandwidth extending from 3.1 GHz - 10.6 GHz and directive radiation pattern as well.