Compact Multiport MIMO Antenna System for 5G IoT and Cellular Handheld Applications

Chattha, Hassan Tariq; Ishfaq, Muhammad; Khawaja, Bilal A.; Sharif, Abubakar; Sheriff, Nathirulla

doi:10.1109/lawp.2021.3059419

Cited by 36 publications

(15 citation statements)

References 18 publications

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“…Recently, for 5G 4 × 4 MIMO operation of the mobile device, it has been demonstrated that four MIMO antennas in the form of the four-antenna module [7], [8], or four conjoined printed slot antennas [9] or four-port single-patch antenna [10], all backed by a ground plane and having a low profile, are expected to find on-metal surface applications for 5G Internet-of-Things (IoT) devices [10], [11] or on the back side of the display panel of the laptop computers [12]. They may also find applications to be applied on the backcover side of the future smartphone or tablet device [7], [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Wideband Low-Profile Eight-Port Eight-Wave Annular-Ring Patch Antenna Based on Using Eight Dual-Shorted Dual-Resonant Ring Sectors for 8 × 8 MIMO Mobile Devices

Kao

2023

IEEE Access

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A wideband eight-port eight-wave annular-ring (AR) patch antenna for 8 × 8 MIMO mobile devices is presented. The AR patch antenna is formed into eight dual-resonant 45 o -ring sectors to radiate eight very-low-correlated or generally uncorrelated waves for 8 × 8 MIMO application. Each ring sector is loaded with two shorting pins and excited by a simple probe feed to generate its half-and quarter-wavelength resonant modes at close frequencies to form a dual-resonant wide operating band. Additionally, all 16 shorting pins of the eight ring sectors have a same distance to the patch center, thereby forming a shorting circle to function like a circular metal wall in the AR patch. This makes the surface currents coupled from the excited ring sector to adjacent sectors to be mainly confined inside the shorting circle. Therefore, with the eight probe feeds located outside the shorting circle in the AR patch, enhanced port isolation is obtained. With the proposed design, the eight-port AR patch antenna having a low profile of 1.4 mm (about 0.028λ at 5.9 GHz) and an outer diameter of 46 mm (about 0.91λ at 5.9 GHz) can generate eight very-low-correlated waves over a wide band of about 5.9-7.2 GHz (fractional bandwidth 20% based on 3:1 VSWR for mobile device application). Also, the proposed antenna has a back ground plane and is especially suitable for onmetal surface application. The use of a single proposed antenna can be conveniently applied for the mobile device or Internet-of-Things (IoT) device to cover such as 5.925-7.125 GHz for 8 × 8 MIMO operation in the possible new mobile communication spectrum.INDEX TERMS Mobile antennas, mobile MIMO antennas, multiport single-patch antennas, low-profile wideband eight-port patch antennas, 8 × 8 MIMO antennas.

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Section: Introductionmentioning

confidence: 99%

Wideband Low-Profile Eight-Port Eight-Wave Annular-Ring Patch Antenna Based on Using Eight Dual-Shorted Dual-Resonant Ring Sectors for 8 × 8 MIMO Mobile Devices

Kao

2023

IEEE Access

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“…This implies that antennas operating from sub-6 GHz to mm-waves are required for IoT communication. Various dedicated antennas for their applications in the IoT at sub-6 GHz and mm-wave bands have been widely studied in the literature [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. These antennas operate either at sub-6 GHz [5][6][7][8][9][10][11][12][13] or mm-Wave bands [14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Various dedicated antennas for their applications in the IoT at sub-6 GHz and mm-wave bands have been widely studied in the literature [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. These antennas operate either at sub-6 GHz [5][6][7][8][9][10][11][12][13] or mm-Wave bands [14][15][16][17][18][19][20][21]. Multiple antennas (operating at various frequencies) increase device size, cost, and complexity; new 5G devices must be small, inexpensive, and simple.…”

Section: Introductionmentioning

confidence: 99%

Integrated Microwave and mm-Wave MIMO Antenna Module With 360° Pattern Diversity for 5G Internet of Things

Hussain

Kim

2022

IEEE Internet Things J.

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The complete coverage of the operating frequency bands from microwave bands to millimeter (mm-wave) is required for the realization of the fifth-generation (5G) internet-of-thing (IoT) systems. Here, we present a multi-band antenna operating at the microwave (2.5/3.5/5.5/7.5 GHz) and mm-wave bands (23 -31 GHz), and its 12-port MIMO configuration with pattern diversity affording 360° coverage for 5G IoT applications. The multi-band characteristics are obtained by adding well-designed quarterwavelength stubs. The antenna operates at the important frequency bands from 2.37 -2.65 GHz, 3.25 -3.85 GHz, 5.0 -6.1 GHz, and 7.15 -8.5 GHz (|S11| < -10 dB), while it resonates from 23 -31 GHz at the mm-wave band with the desired radiation characteristics. Moreover, the antenna has more than 95% radiation efficiency and a stable gain (> 2.5 dBi at microwave band and 6.5 dBi at mm-wave bands) characteristics. In addition, the single-element antenna is translated to design a 2 × 2 MIMO antenna. This MIMO unit is further utilized in the formation of 2 × 4 and the proposed 3 × 4 (12-port) MIMO configurations to achieve spectral and pattern diversity. Considering the unique three-dimensional arrangement of the antenna elements, the 12port MIMO system is the only one of its kind that offers the codesign of microwave and mm-wave antenna, good isolation, and pattern diversity, providing complete 360-degrees space coverage in elevation and azimuth planes. The proposed antenna module is suitable for 5G IoT, especially in an indoor scenario for smart houses, offices, and vehicle-to-everything communications.

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“…Multi-element antennas play an important role in RF wireless communication architecture [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ] and its development towards uninterrupted high-speed data transfer with an increased efficiency, higher bandwidth, and low power consumption. With 5G networks [ 9 , 10 , 11 ] and adoption of the derivatives such as 5G chipsets, the Internet-of-Things (IoTs), Machine-2-Machine (M2M) connectivity, multi-element antennas are integrated to optimize the performance with high bandwidth and low latency. The optimal feature is to synchronize the signal transmission process between Tx and Rx [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Miniaturized Four-Element Antenna Integrated with Dipole Elements and Meta-Couplers for 5G Applications

Mohanty

Behera

Nasimuddin

et al. 2022

Sensors

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A miniaturized four-element antenna of 20 mm × 20 mm with edge-to-edge distance of 4.9 mm between the array antennas operating from 4.6–8.6 GHz is investigated in this article. The antenna consists of 4 × integrated dipole driven elements, and complementary split ring resonator (CSRR) metacells are loaded on the both sides of each dipole arms. The loaded meta-couplers magnetically couple to dipole drivers, and the induced resonance effect improves the 10-dB impedance bandwidth (IBW) to 60.6%. To improvise the isolation between antenna elements, metallic vias are implemented that trap electromagnetic (EM)-surface waves to condense into the ground. So, the meta-couplers induce electromagnetic (EM)-propagation as surface wave trapments for radiation and decouple near-field condensed currents, acting as couplers/decouplers. The maximum isolation achieved is >−22.5 dB without any external decoupling network. The diversity parameters indicate good attributes in isotropic, indoor, and outdoor channel environments with an envelope correlation coefficient (ECC) < 0.165 and realized gain of 5.5 dBi with average radiation efficiency of 80–90% in the desired operating bands. An equivalent circuit model using lumped components is designed for the proposed four-element antenna. For validation, a prototype antenna is fabricated and measured to be implemented in 5G applications, which shows good correlation with the full-wave simulated results.

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Compact Multiport MIMO Antenna System for 5G IoT and Cellular Handheld Applications

Cited by 36 publications

References 18 publications

Wideband Low-Profile Eight-Port Eight-Wave Annular-Ring Patch Antenna Based on Using Eight Dual-Shorted Dual-Resonant Ring Sectors for 8 × 8 MIMO Mobile Devices

Wideband Low-Profile Eight-Port Eight-Wave Annular-Ring Patch Antenna Based on Using Eight Dual-Shorted Dual-Resonant Ring Sectors for 8 × 8 MIMO Mobile Devices

Integrated Microwave and mm-Wave MIMO Antenna Module With 360° Pattern Diversity for 5G Internet of Things

Investigation of a Miniaturized Four-Element Antenna Integrated with Dipole Elements and Meta-Couplers for 5G Applications

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