Compact self decoupled MIMO antenna pairs covering 3.4–3.6 GHz band for 5G handheld device applications

Moses, Abi T. Zerith; Nesasudha, M.

doi:10.1016/j.aeue.2021.153971

Cited by 17 publications

(13 citation statements)

References 28 publications

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“…In this way, antenna spacing can be significantly reduced and spatial reuse becomes possible to a certain extent. A much closer distance between two antenna elements was achieved in Moses and Moses 13 and Moses et al 14 and the studies in Tsai et al 15 and Yuan et al 16 demonstrated that the antenna elements can be integrated edge-to-edge or back-to-back without any distance. However, colocation and spatial reuse were not realized.…”

Section: Introductionmentioning

confidence: 78%

“…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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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

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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“…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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“…However, the construction of numerous antennas on a tiny mobile terminal is a significant obstacle for the use of MIMO systems. This is due to the fact that doing so would enhance the mutual coupling and result in high correlation coefficients [10]- [12]. These antennas, which may be implemented using a variety of techniques [13]- [17], even if they are closely spaced, need to be capable of receiving signals independently, and the signals that are received need to be uncorrelated in order to attain a high capacity [18], [19].…”

Section: Introductionmentioning

confidence: 99%

A broadband MIMO antenna's channel capacity for WLAN and WiMAX applications

Bakouchi¹,

Ghammaz²

2022

IJ-ICT

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This paper describes the findings of a research into the multiple input multiple output (MIMO) channel capacity of a broadband dual-element printed inverted F-antenna (PIFA) antenna array. The dual-element antenna array is made up of two PIFAs that are meant to fit on a teeny-tiny and small wireless communication device that runs at 5 GHz. The device's frequency range is between 3.5 and 4.5 GHz. These PIFAs are also loaded into the device during the installation process. In order to investigate the channel capacity, the ray tracing method is employed in two different kinds of circumstances. For the purpose of carrying out this analysis of the channel capacity, both the simulated and measured mutual couplings of the broadband MIMO antenna are utilized.

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Compact self decoupled MIMO antenna pairs covering 3.4–3.6 GHz band for 5G handheld device applications

Cited by 17 publications

References 28 publications

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

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

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

A broadband MIMO antenna's channel capacity for WLAN and WiMAX applications

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