An electrically small 4-port self-decoupled MIMO antenna pairs operating in n78 5G NR band for smartphone applications

Moses, Abi T. Zerith; Nesasudha, M.; Janapala, Doondi Kumar

doi:10.1016/j.aeue.2021.154082

Cited by 9 publications

(14 citation statements)

References 30 publications

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“…The largest measured ECCs of 0.004 and 0.008 are realized across the former and the latter operating modes, respectively. 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.…”

Section: Resultsmentioning

confidence: 99%

“…One more worthy mention is that the overall volume of the MIMO system was 150 × 73 × 6 mm 3 , which realized a 1 mm reduction in the height of the lateral side frame. 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.…”

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 this reason, large-scale sub-6 GHz mMIMO antennas are now increasingly adopted in 5G terminal devices. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Antenna design for handheld terminal devices is especially complicated and challenging compared to those operating in free-space conditions for other 5G systems, for example, base stations. The reason behind this fact is that the terminal antennas operate under the worst implementation circumstances and the harsh requirements, for example, size limitation, placement restrictions, hand effects, user scenarios, and ease of installation.…”

Section: Introductionmentioning

confidence: 99%

“…On the contrary, self-decoupled MIMO antenna technologies have gained great attention [13][14][15][16][17][18][19][20] ; by tactfully utilizing polarization control and pattern diversity where antenna integration and high isolation are simultaneously achieved without any auxiliary measures. In this way, antenna spacing can be significantly reduced and spatial reuse becomes possible to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

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Colocated MIMO antenna pair based on modal orthogonality for 5G terminal applications

Zahid

2022

Micro & Optical Tech Letters

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In this letter, a novel colocated 2 × 2 multiple‐input multiple‐output (MIMO) antenna pair has been proposed. The pair consists of a monopole antenna (J‐source) and a slot antenna (M‐source) integrated at the same location on the terminal ground plane. The inherent orthogonality between the electric source (J) and magnetic source (M) has been exploited to isolate the antenna elements from each other without deploying any additional decoupling component. The proposed 2 × 2 MIMO antenna pair is extended to an 8 × 8 MIMO antenna design for terminal applications. The measured peak isolation between the antenna elements is 25 dB and the impedance bandwidth of the antennas is above 200 MHz with a 3 dBi peak gain, and the envelope correlation coefficient is less than 0.1. The design is proposed for 5G applications operating at the 3.5 GHz band and is a strong candidate for modern smartphone applications.

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An ultra-wideband MIMO antenna for 5G smartphone

Chen¹,

Yuan²,

Ren³

et al. 2022

AEU - International Journal of Electronics and Communications

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An electrically small 4-port self-decoupled MIMO antenna pairs operating in n78 5G NR band for smartphone applications

Cited by 9 publications

References 30 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

Colocated MIMO antenna pair based on modal orthogonality for 5G terminal applications

An ultra-wideband MIMO antenna for 5G smartphone

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