A Compact Building Block With Two Shared-Aperture Antennas for Eight-Antenna MIMO Array in Metal-Rimmed Smartphone
In this paper, a compact building block composed of a slot antenna and a loop antenna is proposed. The slot antenna and the loop antenna share a rectangular clearance, which improves the compactness of the building block effectively. Although the slot and the loop have overlapped completely, the pro...
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| Published in | IEEE transactions on antennas and propagation Vol. 67; no. 10; pp. 6430 - 6438 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
New York
IEEE
01.10.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subjects | |
| Online Access | Get full text |
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| Abstract | In this paper, a compact building block composed of a slot antenna and a loop antenna is proposed. The slot antenna and the loop antenna share a rectangular clearance, which improves the compactness of the building block effectively. Although the slot and the loop have overlapped completely, the proposed building block exhibits good isolation (better than 19 dB) without any external decoupling structure. Four such building blocks are used to implement a compact eight-port multiple-input multiple-output (MIMO) array operating at 3.5 GHz band (3.4-3.6 GHz) for fifth-generation (5G) metal-rimmed smartphone applications. The proposed eight-antenna MIMO array exhibits good isolation of better than 16 dB across the whole operating band. The measured efficiencies of the proposed MIMO array were between 59% and 73%, and its corresponding measured envelope correlation coefficients (ECCs) were better than 0.05. Furthermore, the calculated channel capacity of the proposed MIMO array with 20 dB signal-to-noise ratio (SNR) was about 38.2-39.8 bps/Hz across the desired bands (3.4-3.6 GHz). The measured results confirm that the proposed MIMO array is a good candidate for 5G terminals. |
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| AbstractList | In this paper, a compact building block composed of a slot antenna and a loop antenna is proposed. The slot antenna and the loop antenna share a rectangular clearance, which improves the compactness of the building block effectively. Although the slot and the loop have overlapped completely, the proposed building block exhibits good isolation (better than 19 dB) without any external decoupling structure. Four such building blocks are used to implement a compact eight-port multiple-input multiple-output (MIMO) array operating at 3.5 GHz band (3.4–3.6 GHz) for fifth-generation (5G) metal-rimmed smartphone applications. The proposed eight-antenna MIMO array exhibits good isolation of better than 16 dB across the whole operating band. The measured efficiencies of the proposed MIMO array were between 59% and 73%, and its corresponding measured envelope correlation coefficients (ECCs) were better than 0.05. Furthermore, the calculated channel capacity of the proposed MIMO array with 20 dB signal-to-noise ratio (SNR) was about 38.2–39.8 bps/Hz across the desired bands (3.4–3.6 GHz). The measured results confirm that the proposed MIMO array is a good candidate for 5G terminals. |
| Author | Liu, Ying Sim, Chow-Yen-Desmond Ren, Aidi |
| Author_xml | – sequence: 1 givenname: Aidi orcidid: 0000-0002-0600-4550 surname: Ren fullname: Ren, Aidi organization: Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi'an, China – sequence: 2 givenname: Ying orcidid: 0000-0002-5500-1946 surname: Liu fullname: Liu, Ying email: liuying@mail.xidian.edu.cn organization: Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi'an, China – sequence: 3 givenname: Chow-Yen-Desmond orcidid: 0000-0001-8209-5901 surname: Sim fullname: Sim, Chow-Yen-Desmond email: cysim@fcu.edu.tw organization: Department of Electrical Engineering, Feng Chia University, Taichung, Taiwan |
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| SubjectTerms | Antenna arrays Apertures Channel capacity Compact building block Correlation analysis Correlation coefficients Decoupling fifth-generation (5G) communication Impedance matching Loop antennas metal-rimmed smartphone Metals Microstrip antennas MIMO communication multiple-input multiple-output (MIMO) Noise levels Signal to noise ratio Slot antennas Smartphones |
| Title | A Compact Building Block With Two Shared-Aperture Antennas for Eight-Antenna MIMO Array in Metal-Rimmed Smartphone |
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