A Dual-CP Quad-Port MIMO Antenna With Reduced Mutual Coupling for X-Band Application

Kulkarni, Jayshri; Sim, Chow‐Yen‐Desmond; Garner, Brian; Li, Yang

doi:10.1109/lawp.2023.3275530

Cited by 20 publications

(10 citation statements)

References 24 publications

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“…Table 2 provides the computed ECC and DG values using far-field method (realistic environment). [21][22][23]…”

Section: Diversity Performance Parametersmentioning

confidence: 99%

Machine learning assisted dual port metasurface loaded MIMO antenna with linearly polarized to circularly polarized conversion features for n257 band of 5G mm‐wave applications

Dwivedi,

Singh,

Ranjan

et al. 2024

Int J Communication

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SummaryIn this communication, a dual port printed multi‐input and multi‐output (MIMO) antenna with high isolation of dimension 12 × 8.5 × 0.8 mm3 is designed, analyzed, and investigated for 28‐GHz 5G mm‐wave applications. The metasurface layer is suspended over the MIMO antenna to convert the linearly polarized (LP) wave to a circularly polarized (CP) wave. The unit cell of the metasurface consists of a square‐shaped conducting strip with one side of diagonal points interconnected. The conducting strip and rectangular gap between the strips etched on the substrate are capable of generating the π/2 phase shifted electric field components (Ex and Ey) resulting in polarization conversion from LP to CP. The machine learning concept is used to characterize the dimensional configuration of the antenna to achieve the optimum throughput. The MIMO diversity performance parameters and antenna essential results are validated by the measured counterparts.

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“…Table 2 provides the computed ECC and DG values using far-field method (realistic environment). [21][22][23]…”

Section: Diversity Performance Parametersmentioning

confidence: 99%

Machine learning assisted dual port metasurface loaded MIMO antenna with linearly polarized to circularly polarized conversion features for n257 band of 5G mm‐wave applications

Dwivedi,

Singh,

Ranjan

et al. 2024

Int J Communication

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“…To overcome this coupling effect, various techniques, such as the plus-shaped slot technique [ 35 ], decoupling structure [ 36 ], and the use of slot antenna asymmetrical placement [ 37 ], have been employed. Other techniques, including m-IFSD, common radiator, partial ground plane and slots, T slots and stub, Varactor diode, Periodic EBG, SICBS, MPS radiator, and reactive load, have also been used to mitigate the coupling effect [ 38 , 39 , 40 , 41 , 42 , 43 ]. In the proposed work, high isolation in a four-port MIMO antenna system is achieved by incorporating CSRR at the ground plane and patch, along with an orthogonal symmetrical distance within the system.…”

Section: Comparison and Theoretical Analysis Of The Proposed Designmentioning

confidence: 99%

“…The use of a varactor diode enables capacitive tuning for reconfigurable antennas. Various techniques such as varactor diode and biasing circuit, Electromagnetic Band Gap (EBG), and Substrate-Integrated Backed Cavity Slots (SIBCS) have been proposed to reduce mutual coupling in MIMO systems [ 40 , 41 , 42 , 43 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Monopole Ultra-Wide-Band Multiple-Input Multiple-Output Antenna with Triple-Notched Characteristics for Enhanced Wireless Communication and Portable Systems

Basir

Qureshi

Subhan

et al. 2023

Sensors

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This study introduces a monopole 4 × 4 Ultra-Wide-Band (UWB) Multiple-Input Multiple-Output (MIMO) antenna system with a novel structure and outstanding performance. The proposed design has triple-notched characteristics due to CSRR etching and a C-shaped curve. The notching occurs in 4.5 GHz, 5.5 GHz, and 8.8 GHz frequencies in the C-band, WLAN band, and satellite network, respectively. Complementary Split-Ring Resonators (CSRR) are etched at the feed line and ground plane, and a C-shaped curve is used to reduce interference between the ultra-wide band and narrowband. The mutual coupling of CSRR enables the MIMO architecture to achieve high isolation and polarisation diversity. With prototype dimensions of (60.4 × 60.4) mm2, the proposed antenna design is small. The simulated and measured results show good agreement, indicating the effectiveness of the UWB-MIMO antenna for wireless communication and portable systems.

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“…Another quad-port MIMO antenna is proposed in Ref. 45 . The antenna puts 8 mm spaces between the radiating elements, which are arranged in the mirror image mode, and employs a modified plus-shaped structure as a band-stop filter to minimize the isolation.…”

Section: Introductionmentioning

confidence: 99%

Wideband high gain metasurface-based 4T4R MIMO antenna with highly isolated ports for sub-6 GHz 5G applications

Salehi,

Oraizi

2024

Sci Rep

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This study presents the design of four $$178\times 178$$ 178 × 178 (mm)$$^{2}$$ 2 wideband, high gain, highly efficient metasurface-based 4T4R MIMO (Multiple-Input Multiple-Output) antennas with highly isolated ports, covering the middle and a portion of the upper bands of the sub 6 GHz 5G frequency spectrum for 5G-based systems, such as IoT (Internet of Things) applications, vehicular communications (e.g., rooftop antennas of cars or trains), smart industries (e.g., farms and factories). The radiating elements of these antennas use the aperture-coupled feeding technique with a dumbbell-shaped slot, a truncated square patch with two U-shaped slots, and a metasurface layer. The proposed MIMO structures place four identical radiating elements like a $$2\times 2$$ 2 × 2 matrix with $$90^\circ$$ 90 ∘ successive rotations to produce orthogonal electromagnetic waves, improving the isolation between ports. Six-millimeter spaces are added between these elements, and two vertical and horizontal strip slots are carved on the ground as the decoupling structure to decrease the mutual coupling. Simulation results show that Antenna_1, Antenna_2, and Antenna_3 achieve gain values of 6.2 to 9.4 dBi, 8.2 to 11.6 dBi, 6.2 to 9.5 dBi, below − 35, − 25, and − 33 isolation and almost 10 dB diversity gain from 2.8 to 4.7 GHz, 2.8 to 4.5 GHz, and 2.7 to 4.9 GHz, respectively. As a prototype, Antenna_4 is manufactured, and measurements are performed. It achieves 6.28 to 10.45 dBi gain values, below − 23 dB isolation, and 0.001 envelope correlation coefficient over 2.7 to 4.3 GHz. The results confirm that the proposed MIMO antennas are compatible with the 5G essential requisites.

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A Dual-CP Quad-Port MIMO Antenna With Reduced Mutual Coupling for X-Band Application

Cited by 20 publications

References 24 publications

Machine learning assisted dual port metasurface loaded MIMO antenna with linearly polarized to circularly polarized conversion features for n257 band of 5G mm‐wave applications

Machine learning assisted dual port metasurface loaded MIMO antenna with linearly polarized to circularly polarized conversion features for n257 band of 5G mm‐wave applications

A Novel Monopole Ultra-Wide-Band Multiple-Input Multiple-Output Antenna with Triple-Notched Characteristics for Enhanced Wireless Communication and Portable Systems

Wideband high gain metasurface-based 4T4R MIMO antenna with highly isolated ports for sub-6 GHz 5G applications

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