A Study of Wire Bi-Conical Antenna for Wide-Band Application in Radio Astronomy

Abstract

In this paper, we describe the characteristics of biconical antennas that can be used in wide-band radio astronomy applications. While the theory of a biconical antenna has been established, the effect of cone angle with a discretized cone (wired biconical antenna) is still unknown. As part of this study, different numbers of wires and cone angles are used in creating biconical antennas. Our study examines twelve combinations of 4, 8, and 12, one metre wired biconical antenna structures with cone angles of 30°, 45°, 60°, and 75°. These biconical antenna configurations were simulated using CST Suite software, with a frequency range of 100 MHz to 3 GHz. It is observed that the bandwidth of operation depends on both the number of wires and the cone angle, wherein the cone angles directly affects operational bandwidth, gain and the radiation pattern of the antenna. Moreover, changing the cone angle can also result in a multi-beam pattern as well as antenna gain up to 6.4 dBi. © 2024 IEEE.