Radiation Characteristics of Wideband Skeletal Discone Antenna

This paper presents the development of skeletal discone antenna and its radiation characteristics investigation. The proposed antenna is intended to work in wide bandwidth, in particular, to cover the frequency of 700 MHz suitable for wireless communications. The disc part of the proposed antenna is implemented by a copper sheet with the diameter of 73 mm, while the cone part is developed by a number of thin copper wires with the length of 110.5 mm to construct the antenna body. The results of radiation characteristics investigation show that the proposed configuration of skeletal discone antenna has a wide fractional bandwidth up to 130% with the lowest operating frequency of 686 MHz and acceptable matching impedance. In addition, stable omnidirectional patterns can be maintained within operating bandwidth at the corresponding frequency of 0.92 GHz and 2.4 GHz.