Journal of Telecommunication, Electronic and Computer Engineering (JTEC)
Abstract
This paper investigates the design of a strip helical antenna for ultra-wideband communication with circular polarization at different frequencies and materials. Unlike the conventional axial-mode helical antenna which is designed using a traditional metallic wire that makes the antenna size large, the strip helical antenna is designed using the metallic strip. As a result, the circular polarization without an impedance matching is achieved. The newly designed strip is printed on a substrate then rolled into a helix shape to achieve circular polarization without an impedance matching and that the proposed antenna can be used for potential applications in wideband and ultrawideband wireless communication. The antenna design parameters and the simulated results are achieved using the commercial software CST. The helical antenna is designed at different operating frequencies which are 10 GHz, 5.8 GHz, and 5.6 GHz for different materials. The gain achieved is between 7 dB to 14 dB for using Teflon, and fast-film materials at different operating frequencies. While the maximum achieved bandwidth is 2.5 GHz by using fast-film material at 10 GHz operating frequency which makes it suitable for usage in many wideband applications
