Eight-port high-isolation antenna array for 3.3–6 GHz handset applications

Huang, Jianlin; He, Tong‐Chuan; Xi, Shuqi; Yang, Qichao; Shi, Xiaojin; Liu, Gui

doi:10.1016/j.aeue.2022.154333

Cited by 8 publications

(5 citation statements)

References 29 publications

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“…As a result, DG serves as a critical metric for evaluating and optimizing MIMO antenna designs, ensuring they deliver superior performance in realworld wireless communication scenarios. DG can be calculated by Equation (2). The computational outcomes are depicted in a graphical representation, illustrated in Figure 15 Figure 16 plays a pivotal role in illustrating the significance of the total active reflection coefficient (TRAC) in evaluating MIMO antenna system performance.…”

Section: Ecc =mentioning

confidence: 99%

“…The widespread adoption of 5G mobile communication systems has heightened the importance of antenna design for 5G mobile devices. MIMO technology enhances wireless communication capacity and quality by utilizing spatial diversity and multiplexing to establish parallel data streams, improving efficiency and reliability [ 1 , 2 , 3 ]. The utilization of MIMO antennas in 5G smartphones enhances communication efficiency and elevates data transmission rates.…”

Section: Introductionmentioning

confidence: 99%

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High Isolation MIMO Antenna System for 5G N77/N78/N79 Bands

Wei,

Lu,

Miao

et al. 2024

Micromachines

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This paper presents a symmetric dual-band multiple-input multiple-output (MIMO) antenna system tailored for fifth-generation (5G) mobile terminals. Operating within the 5G frequency bands N77/N78 (3.4–3.6 GHz) and N79 (4.8–5.0 GHz), the proposed MIMO system achieves high isolation between adjacent antenna elements through slotting and self-decoupling technologies. Antenna elements are strategically positioned on two frames perpendicular to the smartphone’s main board. Each antenna element integrates a rectangular microstrip radiator on the inner frame surface, accompanied by a grounded rectangular ring on the outer frame surface. The feed line, situated atop the main board, connects to an external SMA connector located at the main board’s bottom. Measurement results reveal isolations exceeding 20 dB for the lower band and 24 dB for the higher band. The fabricated and tested MIMO antenna system demonstrates excellent agreement between simulation and measurement outcomes.

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Section: Ecc =mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Isolation MIMO Antenna System for 5G N77/N78/N79 Bands

Wei,

Lu,

Miao

et al. 2024

Micromachines

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Section: Introductionmentioning

confidence: 99%

“…Additionally, the metal frame is a distinctive feature of full-screen smartphones, gaining attention in recent years [13][14][15][16]. An antenna element encompassing C-shaped microstrip patches, two rectangular radiating microstrips on a metal frame, and a rectangular slot on the ground plane has been proposed, covering 5G N77 (3.3-4.2 GHz), N78 (3.3-3.8 GHz), N79 (4.4-5.0 GHz), and LTE46 (5.15-5.93 GHz) bands [13]. A metal-frame smartphone antenna design with dimensions of 150 mm × 70 mm × 6 mm incorporates an inverted-F antenna and an asymmetric T-slot on the circuit board edges, demonstrating significant engineering application value [16].…”

Section: Introductionmentioning

confidence: 99%

A Dual-Band 8-Antenna Array Design for 5G/WiFi 5 Metal-Frame Smartphone Applications

Li,

Xiao,

et al. 2024

Micromachines

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This paper presents a dual-band 8-port multiple-input multiple-output (MIMO) antenna specifically designed for fifth-generation (5G) smartphones, featuring two open-slot metal frames. To enhance impedance matching and improve isolation between adjacent antenna elements, each antenna element employed a coupling feed. All simulation results in this paper come from Ansys HFSS. The operational frequency bands of the proposed antenna spanned 3.36–4.2 GHz for the lower band and 4.37–5.95 GHz for the higher band, covering 5G New Radio (NR) bands N78 (3.4–3.6 GHz) and N79 (4.4–4.9 GHz), as well as WiFi 5 (5.15–5.85 GHz). Notably, the antenna demonstrated outstanding isolation exceeding 16.5 dB within the specified operating bands. The exceptional performance positions the proposed antenna as a promising candidate for integration into 5G metal-frame smartphones.

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“…Multiple input-multiple output (MIMO) technology possesses promising application prospects in improving the data rate. Recently, many sub-6 GHz 5G smartphone MIMO antennas have been developed [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], such as four-element MIMO antennas [2][3][4][5], eight-port smartphone antennas [6][7][8][9][10], and even twelve-element MIMO antennas [11,12]. One nonnegligible challenge encountered during the design process is the method to effectively weaken the mutual electromagnetic coupling between antenna elements in a MIMO antenna array.…”

Section: Introductionmentioning

confidence: 99%

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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Eight-port high-isolation antenna array for 3.3–6 GHz handset applications

Cited by 8 publications

References 29 publications

High Isolation MIMO Antenna System for 5G N77/N78/N79 Bands

High Isolation MIMO Antenna System for 5G N77/N78/N79 Bands

A Dual-Band 8-Antenna Array Design for 5G/WiFi 5 Metal-Frame Smartphone Applications

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

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