Design of Broadband Pyramidal Antenna for UWB Applications

Abstract

As mobile communication systems continue to evolve, the demand for reliable and high-speed indoor communication has increased. The issue is particularly pressing in large buildings such as shopping malls, office buildings, and passenger stations. To address this problem, researchers are exploring the potential of ultra-wideband (UWB) technology, which uses short pulses to transmit data over a broad frequency range. UWB has numerous applications and is gaining popularity in the wireless communication industry due to its low power density and high-speed data transmission capabilities. This work proposes a low-profile, vertically polarized antenna for UWB applications. The antenna takes advantage of the broadband and omnidirectional radiation characteristics of monocone antennas, which have a broad frequency range. However, the minimum operating frequency of a monocone antenna is primarily limited by its height. To overcome this limitation, the researchers have used several downsizing techniques to minimize the profile of the pyramid antenna without compromising its performance. The proposed antenna operates in the frequency range of 3.1 GHz to 10.6 GHz, making it suitable for a wide range of UWB applications. The pyramid antenna is an ideal candidate for UWB applications because of its vertical polarization and omnidirectional radiation characteristics. The proposed antenna is low-profile, making it suitable for cost-effective and aesthetically pleasing installations. Furthermore, the antenna's electrical dimensions of 55mm X 33.8mm X 21.06 mm make it easy to design compared to a printed circuit board (PCB) antenna. The use of UWB technology in indoor communication systems can significantly increase channel capacity and provide reliable high-speed communication in areas with high communication density. In the future, researchers can try to cover an even broader bandwidth of 1 GHz to 10.6 GHz and use modified monocone antennas to achieve S11 less than -10dB for the entire band.