Dual Beam Scanning Antenna Using Spoof Surface Plasmon Polaritons Transmission Line

Abstract

This paper presents dual beam scanning (DBS) antenna fed by two different spoof surface Plasmon Polaritons (SSPPs) transmission lines. Three rows of circular patches are placed on the two different planar SSPPs waveguide of the antenna. Whereas, the SSPP guided waves are converted into radiated waves by these patches. By using different shapes of unit cell different cut-off frequencies for the SSPP are generated. Consequently, two different propagation constants are obtained using the dispersion nature of SSPPs transmission line which leads to dual beam scanning feature of the proposed antenna. Two different simulation tools of CST and HFSS are used to simulate the antenna over the operating frequency band from 1 GHz to 6 GHz. The measured scanning angle of the first beam covers 35° and 33°, while covers 45° and 29° for the second beam, with maximum measured gain of 9.42 dBi for port 1 and 9.65 dBi for port 3, which makes. This flexibility allows for easier and more cost-effective deployment of 5G networks, as well as the potential for innovative use cases such as smart cities, Internet of Things (IoT), and autonomous vehicles.