Abstract
A multiple-input-multiple-output (MIMO) antenna array for triple-band 5G metal-frame smartphone applications is proposed in this paper. Each single antenna element consists of an S-shaped feeding strip and an L-shaped radiation strip on the metal frame. The dimension of the antenna element is only 6.5 mm × 7 mm (0.076 λ0 × 0.082 λ0, λ0 is the free-space wavelength at the frequency of 3.5 GHz). The −6 dB impedance bandwidth of the proposed eight-antenna array can cover 3.3–3.8 GHz, 4.8–5 GHz, and 5.15–5.925 GHz. The evolution design and the analysis of the optimal parameters for a single antenna element are derived to investigate the principle of the antenna. The measured total efficiency is larger than 70%. The measured isolation is better than 13 dB. The measurements of the prototype agree well with the simulation results.
Highlights
College of Electrical and Electronics Engineering, Wenzhou University, Wenzhou 325035, China; Abstract: A multiple-input-multiple-output (MIMO) antenna array for triple-band 5G metal-frame smartphone applications is proposed in this paper
This paper proposes a MIMO antenna array for triple-band 5G metal-frame smartphone applications
The single antenna element consists of an S-shaped feeding strip and an L-shaped radiation strip on the metal frame
Summary
College of Electrical and Electronics Engineering, Wenzhou University, Wenzhou 325035, China; Abstract: A multiple-input-multiple-output (MIMO) antenna array for triple-band 5G metal-frame smartphone applications is proposed in this paper. Each single antenna element consists of an. The −6 dB impedance bandwidth of the proposed eight-antenna array can cover 3.3–3.8 GHz, 4.8–5 GHz, and 5.15–5.925 GHz. The evolution design and the analysis of the optimal parameters for a single antenna element are derived to investigate the principle of the antenna. The measured total efficiency is larger than 70%. By using a multi-slot decoupling technique, a dual-band eight-element antenna array is proposed in [5,12]. A single antenna element consisting of two radiators was presented for dual-band operation [6]. By adjusting the impedance ratio of the stepped impedance resonators and the position of the microstrip feed line, a dual-band eight-antenna array is proposed for the 5G mobile application [8]. Two double-branch monopoles and a T-shaped decoupling stub were utilized for dual-band operation [9]
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