A high-isolation coupled-fed building block for metal-rimmed 5G smartphones

A high-isolation coupled-fed building block for metal-rimmed 5G smartphones

연구 분야: Networking

학회: Frontiers of Information Technology & Electronic Engineering

A compact coupled-fed dual-antenna building block has been constructed in this study. The building block is simple in structure and easy to process, and has a high degree of isolation. The dual-antenna building block is composed of a coupled-fed loop antenna and a coupled-fed slot antenna that completely overlap. Based on this dual-antenna module, an eight-element MIMO system is designed, and the fabricated eight-element MIMO array is measured. The measured isolation of the designed eight-element MIMO system is >18.5 dB without any decoupling element. In addition, the MIMO array has good measured efficiencies, with a measured efficiency variation range of 43%–54% in the entire working frequency band. The measured ECC of the MIMO system is <0.02. Therefore, the designed MIMO array has great potential in 5G metal-rimmed mobile phone applications.