Design and Realization of A Wideband Quadratic Wire-shaped Discone Antenna

This paper deals with the development of a wideband quadratic wire-shaped discone antenna proposed for electromagnetic compatibility (EMC) application. In the design, the disc part is configured using a 0.5 mm thick copper sheet, while the cone part is constructed using several copper wires with each diameter of 2.5 mm. In order to gain a wide impedance bandwidth, the shape of each copper wire is adjusted based on quadratic formula and integrated to each other in realizing the desired structure. It should be noted that the number of upper and lower copper wires for the cone part is adjusted to obtain adequate result in terms of its bandwidth response. Moreover, to demonstrate its performance, a linear wire-shaped discone antenna is also configured and characterized based on simulation approach for comparison. The characterization result shows that the proposed quadratic wire-shaped discone antenna has the bandwidth response of 136.4% and can provide an omnidirectional radiation pattern within the operating bandwidth which is satisfied for the desirable application.