Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Pathum Thani, Khlong Hok, Thailand
Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Pathum Thani, Khlong Hok, Thailand
Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Pathum Thani, Khlong Hok, Thailand
Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Pathum Thani, Khlong Hok, Thailand
Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Pathum Thani, Khlong Hok, Thailand
Department of Electronics and Telecommunication Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Pathum Thani, Khlong Hok, Thailand
Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand
This manuscript presents a triple-port ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna designed for wireless communication. The antenna employs automobile window film as a substrate, which is a cost-effective, easily accessible, and ultra-thin material. The proposed structure comprises a monopole antenna featuring a circular patch pattern that is fed by a coplanar waveguide (CPW). Additionally, the internal ground plane has been modified by grooving both sides to form a rectangular slot antenna construction. As a result, the antenna possesses identical dimensions and is equipped with three ports. The antenna exhibits a frequency range spanning from 3.1-GHz to 10.6-GHz across all three ports. Additionally, the $\vert S_{11}\vert $ at port 1 demonstrates an extensive operating bandwidth of 2.4-GHz to 10.6-GHz with a signal attenuation of less than −10-dB. Consequently, it has the capability to facilitate a diverse range of applications such as ultra-wideband (UWB), Worldwide Interoperability for Microwave Access (WiMAX), Wireless Personal Area Network (WPAN), Wireless Local Area Network (WLAN), and 5G. Furthermore, the antenna exhibits a gain of 5.8 dBi across its entire range, a correlation coefficient below 0.45, and a group latency of under 0.85 ns. The antenna exhibits both omnidirectional and bidirectional radiation patterns across its operational range at ports 1, 2, and 3.
