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Self-Decoupled MIMO Antenna Pair With Shared Radiator for 5G Smartphones.
- Source :
- IEEE Transactions on Antennas & Propagation; May2020, Vol. 68 Issue 5, p3423-3432, 10p
- Publication Year :
- 2020
-
Abstract
- In this article, a novel self-decoupled multiple-input multiple-output (MIMO) antenna pair with a shared radiator is proposed for fifth-generation (5G) smartphones. In our approach, a radiator is directly excited by two feeding ports, and interestingly, the two ports are naturally isolated across a wide bandwidth without using any extra decoupling structures. To offer a deep physical insight of the self-decoupling mechanism, a mode-cancellation method based on the synthesis of common and differential modes is developed for the first time. The proposed self-decoupled antenna pair shows a good isolation of better than 11.5 dB across the 5G N77 band (3.3–4.2 GHz) with a radiation pattern diversity property. Based on the self-decoupled antenna pair, an $8 \times 8$ MIMO antenna system, constituted by four sets of antenna pairs, is simulated, fabricated, and measured to validate the concept. The experimental results demonstrate that the proposed $8 \times 8$ MIMO system can offer an isolation of better than 10.5 dB between all ports and a high total efficiency of 63.1%–85.1% across 3.3–4.2 GHz. With the advantages of self-decoupling, shared radiator, simple structure, wide bandwidth, and high efficiency, the proposed design scheme exhibits promising potential for the future highly integrated MIMO antennas for 5G smartphones. [ABSTRACT FROM AUTHOR]
- Subjects :
- ANTENNAS (Electronics)
RADIATORS
MIMO systems
Subjects
Details
- Language :
- English
- ISSN :
- 0018926X
- Volume :
- 68
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Antennas & Propagation
- Publication Type :
- Academic Journal
- Accession number :
- 143174228
- Full Text :
- https://doi.org/10.1109/TAP.2019.2963664