Isolation Enhancement of a Metasurface-Based MIMO Antenna Using Slots and Shorting Pins

Sufian, Md. Abu; Hussain, Niamat; Askari, Hussain; Park, Seong Gyoon; Shin, Kook Sun; Kim, Nam

doi:10.1109/access.2021.3079965

Cited by 83 publications

(56 citation statements)

References 23 publications

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“…MM is currently widely used in antenna technology to improve radiation pattern, bandwidth, gain, and isolation among antenna elements and wireless communication systems, as stated in 25 – 28 . Metasurface-based four-elements MIMO system is devised in 29 , where the antenna patch is sandwiched between a metasurface and the ground without an air gap, improving the MIMO performance. However, this design has large dimensions and a lower operating frequency, as well as a complicated design structure.…”

Section: Introductionmentioning

confidence: 99%

Gain and isolation enhancement of a wideband MIMO antenna using metasurface for 5G sub-6 GHz communication systems

Hasan

Islam

Samsuzzaman

et al. 2022

Sci Rep

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This work proposes a compact metasurface (MS)-integrated wideband multiple-input multiple-output (MIMO) antenna for fifth generation (5G) sub-6 GHz wireless communication systems. The perceptible novelty of the proposed MIMO system is its wide operating bandwidth, high gain, lower interelement gap, and excellent isolation within the MIMO components. The radiating patch of the antenna is truncated diagonally with a partially ground plane, and a metasurface has been employed for enhancing the antenna performance. The suggested MS integrated single antenna prototype has a miniature dimension of 0.58λ × 0.58λ × 0.02λ. The simulated and measured findings demonstrate a wideband characteristic starting from 3.11 to 7.67 GHz including a high realized gain of 8 dBi. The four-element MIMO system has been designed by rendering each single antenna orthogonally to one another while retaining compact size and wideband properties between 3.2 and 7.6 GHz. The suggested MIMO prototype has been designed and fabricated on a low loss Rogers RT5880 substrate with a miniature dimension of 1.05λ × 1.05λ × 0.02λ and its performance is evaluated using a suggested 10 × 10 array of a square enclosed circular split ring resonators within the same substrate material. The inclusion of the proposed metasurface with a backplane significantly reduces antenna backward radiation and manipulates the electromagnetic field, thus improving the bandwidth, gain and isolation of MIMO components. The suggested 4-port MIMO antenna offers a high realized gain of 8.3 dBi compared to existing MIMO antennas with an excellent average total efficiency of 82% in the 5G sub-6 GHz spectrum and is in good accordance with measured results. Furthermore, the developed MIMO antenna exhibits outstanding diversity characteristics in respect of envelope correlation coefficient (ECC) less than 0.004, diversity gain (DG) close to 10 dB (> 9.98 dB) and high isolation between MIMO components (> 15.5 dB). Therefore, the proposed MS-inspired MIMO antenna substantiates its applicability for 5G sub-6 GHz communication networks.

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Section: Introductionmentioning

confidence: 99%

Gain and isolation enhancement of a wideband MIMO antenna using metasurface for 5G sub-6 GHz communication systems

Hasan

Islam

Samsuzzaman

et al. 2022

Sci Rep

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“…Along with essential parameters to measure the antenna performance, such as gain, bandwidth, efficiency, etc., a few other parameters are also necessary to be inspected to measure the MIMO characteristics. These parameters are Envelope Correlation Coefficient (ECC) [54,55], Diversity Gain (DG) [56], Mean Effective Gain Antennas for 5G and 6G Communications DOI: http://dx.doi.org/10.5772/intechopen.105497 (MEG) [57], Total Active Reflection Coefficient (TARC) [58,59], and Channel Capacity Loss (CCL) [58].…”

Section: Figure 10mentioning

confidence: 99%

Antennas for 5G and 6G Communications

Naqvi¹,

Hussain²

2022

5G and 6G Enhanced Broadband Communications [Working Title]

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An antenna is of substantial importance for a communication system as the design of an air interface is mainly reliant on the antenna design. With the significant wireless evolution from 1G to 6G, technologies and network capacities are also evolving to fulfill the promptly growing customer demands. These continually increasing demands have gone concurrently with extensive technological accomplishments of the antenna design community. This chapter discusses the sub-6 GHz and millimeter-wave (mm-wave) fifth-generation (5G) antennas, including antenna arrays, multiple-input, multiple-output (MIMO) technology, beam-steering techniques, metasurfaces, and other techniques to achieve the current and impending fast connectivity. Moreover, the design specifications, research directions, various technologies expected to be involved, and challenges in the design, fabrication, and measurement of the sixth-generation (6G) antennas at the THz band have also been presented. In addition, antenna-in-package (AiP) and antenna-on-chip (AoC) technologies with proper technology solutions have also been discussed.

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“…These techniques are, defected ground structure [9,10], decoupling network [11,12], space diversity [13], parasitic elements [14,15], neutralization rings [16], different stub and slots [17][18][19][20][21][22], shorting pins [23], metamaterials [24], and non-uniform transmission line using nonlinear model predictive to reduce mutual coupling [25].…”

Section: Introductionmentioning

confidence: 99%

Isolation and Gain Improvement of a Rectangular Notch UWB-MIMO Antenna

Abbas

Hussain

Sufian

et al. 2022

Sensors

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This paper presents the performance improvement of a co-planar waveguide rectangularly notched UWB-MIMO antenna. The isolation and gain of the antenna are enhanced by using a parasitic isolator. The antenna consists of four microstrip patch antennas and an isolator. The UWB characteristic of the antenna is achieved by truncating the lower ends of the radiating patch by a semicircle. The rectangular notch characteristic is obtained by adding two electromagnetic bandgap structures on the backside of the antenna, which is attached to the radiator via shorting pin. The performance, especially the decoupling of the MIMO antenna is improved by using a novel parasitic decoupler, which is placed between the antennas to receive uncorrelated signals. The decoupling structure consists of a square shape metallic element with a circular slot inside and a half-semicircle slot edged at each corner. Four rectangular metallic stubs are extended from opposite parallel sides to improve further isolation. The simulated and measured results show that the antenna has a rectangular notch band (5.25–5.85 GHz) across the working band of 3–12.8 GHz. In addition, the antenna has a planar structure with an overall size of 60 × 60 × 1.52 mm3 and offers stable gain, reduced mutual coupling (<−21 dB), and lower envelop correlation (<0.001).

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Isolation Enhancement of a Metasurface-Based MIMO Antenna Using Slots and Shorting Pins

Cited by 83 publications

References 23 publications

Gain and isolation enhancement of a wideband MIMO antenna using metasurface for 5G sub-6 GHz communication systems

Gain and isolation enhancement of a wideband MIMO antenna using metasurface for 5G sub-6 GHz communication systems

Antennas for 5G and 6G Communications

Isolation and Gain Improvement of a Rectangular Notch UWB-MIMO Antenna

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