MIMO Antenna Mutual Coupling Reduction Using Modified Inverted-Fork Shaped Structure

Dash, Jogesh Chandra; Kharche, Shilpa; Reddy, G. Shrikanth

doi:10.1109/icjece.2022.3201054

Cited by 7 publications

(6 citation statements)

References 35 publications

(20 reference statements)

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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%

“…Equations () and () provide the mathematical equation for ECC that may be derived from scattering parameters and radiation pattern data of MIMO architecture, respectively. Table 2 provides the computed ECC and DG values using far‐field method (realistic environment) 21–23

italicEC C_{s} goodbreak= {|\frac{(||, S_{11}^{*} S_{12} goodbreak+ S_{21}^{*} S_{22})}{{(||, ((), 1 goodbreak- {|S_{11}|}^{2} goodbreak- {|S_{21}|}^{2}) ((), 1 goodbreak- {|S_{22}|}^{2} goodbreak- {|S_{12}|}^{2}))}^{1 / 2}}|}^{2}

italicEC C_{ρ} goodbreak= \frac{{(||, \iint_{4 π} ([], E_{i} ((),, θ, ϕ) * E_{j} ((),, θ, ϕ)) d normalΩ)}^{2}}{\iint_{4 π} {|E_{i} (θ, ϕ)|}^{2} d normalΩ \iint_{4 π} {|E_{j} (θ, ϕ)|}^{2} d normalΩ}

…”

Section: Diversity Performance Parametersmentioning

confidence: 99%

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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%

italicEC C_{s} goodbreak= {|\frac{(||, S_{11}^{*} S_{12} goodbreak+ S_{21}^{*} S_{22})}{{(||, ((), 1 goodbreak- {|S_{11}|}^{2} goodbreak- {|S_{21}|}^{2}) ((), 1 goodbreak- {|S_{22}|}^{2} goodbreak- {|S_{12}|}^{2}))}^{1 / 2}}|}^{2}

italicEC C_{ρ} goodbreak= \frac{{(||, \iint_{4 π} ([], E_{i} ((),, θ, ϕ) * E_{j} ((),, θ, ϕ)) d normalΩ)}^{2}}{\iint_{4 π} {|E_{i} (θ, ϕ)|}^{2} d normalΩ \iint_{4 π} {|E_{j} (θ, ϕ)|}^{2} d normalΩ}

…”

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%

“…In a co and cross configuration, periodic S-shaped DGS units (PSDGS) have been placed between square patch elements to induce high isolation [ 35 ]. Dielectric Resonator Antenna (DRA) techniques, Complementary Split-Ring Resonators (CSRR), neutralization techniques, and stub and T-slot integration into the ground have been proposed to block surface current flow and improve isolation [ 36 , 37 , 38 , 39 ]. The use of a varactor diode enables capacitive tuning for reconfigurable antennas.…”

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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“…These parameters were used to assess the system's reliability. ECC measures the correlation between MIMO elements, with an ideal value of zero, and a practical limit of below 0.5 [29,30]. It can be determined from the S-parameters as [31]…”

Section: Mimo Performancementioning

confidence: 99%

Design and Optimization of a Compact Super-Wideband MIMO Antenna with High Isolation and Gain for 5G Applications

Esmail,

Koziel,

Pietrenko-Dabrowska

2023

Electronics

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This paper presents a super-wideband multiple-input multiple-output (SWB MIMO) antenna with low profile, low mutual coupling, high gain, and compact size for microwave and millimeter-wave (mm-wave) fifth-generation (5G) applications. A single antenna is a simple elliptical-square shape with a small physical size of 20 × 20 × 0.787 mm3. The combination of both square and elliptical shapes results in an exceptionally broad impedance bandwidth spanning from 3.4 to 70 GHz. Antenna dimensions are optimized using the trust-region algorithm to enhance its impedance bandwidth and maintain the gain within a predefined limit across the entire band. For that purpose, regularized merit function is defined, which permits to control both the single antenna reflection response and gain. Subsequently, the SWB MIMO system is constructed with four radiators arranged orthogonally. This arrangement results in high isolation, better than 20 dB, over a frequency band from 3.4 to 70 GHz band. Further, the system achieves an average gain of approximately 7 dB below 45 GHz and a maximum gain equal to 12 dB for 70 GHz. The system exhibits excellent diversity performance throughout the entire bandwidth, as evidenced by the low envelope correlation coefficient (ECC) (<3 × 10−3), total active reflection coefficient (TARC) (≤−10 dB), and channel capacity loss (CCL) (<0.3 bit/s/Hz) metrics, as well as the high diversity gain (DG) of approximately 10 dB. Experimental validation of the developed SWB MIMO demonstrates a good matching between the measurements and simulations.

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MIMO Antenna Mutual Coupling Reduction Using Modified Inverted-Fork Shaped Structure

Cited by 7 publications

References 35 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

Design and Optimization of a Compact Super-Wideband MIMO Antenna with High Isolation and Gain for 5G Applications

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