Minimized Triple-Band Eight-Element Antenna Array for 5G Metal-frame Smartphone Applications

Huang, Jianlin; Chen, Zhuoni; Cai, Qibo; Loh, Tian Hong; Liu, Gui

doi:10.3390/mi13010136

Cited by 10 publications

(10 citation statements)

References 22 publications

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“…The ECCs are computed from the radiating results based on Formula (1) [18]. The computed DGs, calculated from Formula (2) [19], are better than 9.99 dB and 9.978 dB within the two target bands, respectively. TARC is the definition of the square root of the ratio of total reflected radio-frequency (RF) power to the total incident power.…”

Section: Resultsmentioning

confidence: 99%

“…Another self-decoupled four-element antenna pair [18] functioning in the 3.5 GHz band (3.4-3.6 GHz) with the same height of 6 mm has been presented, and the mutual coupling of the antenna pair was decreased to 16.5 dB. In [19], a low-profile, high-isolation eight-port MIMO antenna for the 5G handset was presented, and the height of the lateral sideboard was 5.3 mm. This paper presents an ultrathin eight-port MIMO antenna working at 5G 3.4-3.6 GHz and 4.8-5 GHz frequency bands.…”

Section: Introductionmentioning

confidence: 99%

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A Dual-Band Eight-Element MIMO Antenna Array for Future Ultrathin Mobile Terminals

et al. 2022

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An ultrathin dual-band eight-element multiple input–multiple output (MIMO) antenna operating in fifth-generation (5G) 3.4–3.6 GHz and 4.8–5 GHz frequency bands for future ultrathin smartphones is proposed in this paper. The size of a single antenna unit is 9 × 4.2 mm2 (0.105 λ × 0.05 λ, λ equals the free-space wavelength of 3.5 GHz). Eight antenna units are structured symmetrically along with two sideboards. Two decoupling branches (DB1 and DB2) are employed to weaken the mutual coupling between Ant. 1 and Ant. 2 and between Ant. 2 and Ant. 3, respectively. The measured −10 dB impedance bands are 3.38–3.82 GHz and 4.75–5.13 GHz, which can entirely contain the desired bands. Measured isolation larger than 14.5 dB and 15 dB is obtained in the first and second resonant modes, respectively. Remarkable consistency between the simulated and measured results can be achieved. Several indicators, such as the envelope correlation coefficient (ECC), diversity gain (DG), total active reflection coefficient (TARC), and multiplexing efficiency (ME), have been presented to assess the MIMO performance of the designed antenna.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Dual-Band Eight-Element MIMO Antenna Array for Future Ultrathin Mobile Terminals

et al. 2022

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“…For applications on triple-band 5G metal-frame smartphones, the author in [ 73 ] proposed a MIMO antenna array with good performance whereas the structure use an L-shaped radiation strip and an S-shaped feeding strip ( Figure 17 ). The achieved bandwidth increased for lower frequency band while minimizing size by employing an S-shaped feeding strip.…”

Section: 5g Massive Mimo At Sub-6 Ghzmentioning

confidence: 99%

Design, Challenges and Developments for 5G Massive MIMO Antenna Systems at Sub 6-GHz Band: A Review

et al. 2023

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Massive multiple-input multiple-output (mMIMO) is a wireless access technique that has been studied and investigated in response to the worldwide bandwidth demand in the wireless communication sector (MIMO). Massive MIMO, which brings together antennas at the transmitter and receiver to deliver excellent spectral and energy efficiency with comparatively simple processing, is one of the main enabling technologies for the upcoming generation of networks. To actualize diverse applications of the intelligent sensing system, it is essential for the successful deployment of 5G—and beyond—networks to gain a better understanding of the massive MIMO system and address its underlying problems. The recent huge MIMO systems are highlighted in this paper’s thorough analysis of the essential enabling technologies needed for sub-6 GHz 5G networks. This article covers most of the critical issues with mMIMO antenna systems including pilot realized gain, isolation, ECC, efficiency, and bandwidth. In this study, two types of massive 5G MIMO antennas are presented. These types are used depending on the applications at sub-6 GHz bands. The first type of massive MIMO antennas is designed for base station applications, whereas the most recent structures of 5G base station antennas that support massive MIMO are introduced. The second type is constructed for smartphone applications, where several compact antennas designed in literature that can support massive MIMO technology are studied and summarized. As a result, mMIMO antennas are considered as good candidates for 5G systems.

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“…To meet the requirement of compact size, each antenna element should be minimized. 6 Furthermore, the design of dualband [7][8][9][10] and broadband 11,12 is also a good solution. In ref.…”

Section: Introductionmentioning

confidence: 99%

“…An S‐shaped feeding strip and an L‐shaped radiation strip are presented for dual‐band operation in ref. [8].…”

Section: Introductionmentioning

confidence: 99%

Design and characterization of a minimized planar dual‐band MIMO circular ring antenna with high efficiency

Cai

Dong

Zhang

et al. 2022

Micro & Optical Tech Letters

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A minimized planar dual-band multiple-input multiple-output antenna with high efficiency for the fifth-generation applications is proposed in this paper. The designed antenna is composed of two identical radiating elements and a defected ground structure (DGS). Each radiating element is made up of a circular ring, a U-shaped microstrip, a T-shaped microstrip, and an L-shaped microstrip. A rectangular microstrip with a small square stub is connected to the DGS to improve the isolation. The size of the designed antenna element is 24 mm × 15 mm. The measured reflection coefficients are less than * 10 dB in the 5G New Radio n77/n78/n79 (3.3-4.2 and 4.8-4.96 GHz). The total peak gain and efficiency are greater than 3.5 dBi and 82%, respectively. The values of calculated envelope correlation coefficient are lower than 0.015. The proposed dual-band MIMO antenna is suitable for 5 G applications.

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Minimized Triple-Band Eight-Element Antenna Array for 5G Metal-frame Smartphone Applications

Cited by 10 publications

References 22 publications

A Dual-Band Eight-Element MIMO Antenna Array for Future Ultrathin Mobile Terminals

A Dual-Band Eight-Element MIMO Antenna Array for Future Ultrathin Mobile Terminals

Design, Challenges and Developments for 5G Massive MIMO Antenna Systems at Sub 6-GHz Band: A Review

Design and characterization of a minimized planar dual‐band MIMO circular ring antenna with high efficiency

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