Broadband sub‐6 GHz flower‐shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications

Babu, K. Vasu; Das, Sudipta; Ali, Syed Samser; Ghzaoui, Mohammed El; Madhav, B. T. P.; Patel, Shobhit K.

doi:10.1002/dac.5442

Cited by 33 publications

(20 citation statements)

References 78 publications

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“…For conductor analysis, the characteristic mode theory was proposed in the year 1971 [40,41] and has been extensively utilized for the MIMO antenna design [16,[42][43][44][45]. In this current MIMO antenna analysis, various parameters of characteristic mode analysis like characteristic angle, eigenvalues and modal significance are introduced.…”

Section: Characteristic Mode Analysis Of the Proposed Techniquementioning

confidence: 99%

“…The characteristic mode analysis parameters of the proposed MIMO antenna are displayed in figure 4. For an ideal conductor the total current J expresses the linear superposition related to the currents for all modes of the design system [16].…”

Section: Characteristic Mode Analysis Of the Proposed Techniquementioning

confidence: 99%

“…In this circumstance, several design methodologies for MIMO antenna configurations have been adopted and implemented by the researchers for different wireless communication standards including 5G systems. The reported designs include arrangement of inverted-F MIMO antenna [1], FSS integrated 3-dimensional MIMO antenna incorporating folding technique and meandered DGS [2], hexagonal slot loaded MIMO antenna for 5NR mobile applications [3], metamaterial inspired textile MIMO radiator with high isolation [4], MIMO array antenna system with diamond ring slot elements for 5G smartphones [5], 2´1 MIMO array of folded patch with a shorting wall and 3D U-slot cut folded monopole feed [6], bow-tie dipole pair designed with trapezoidal and U-shaped slots in presence of an AMC reflector [7], Split ring resonator based MIMO antenna [8], complementary split ring resonator (CSRR) loaded MIMO radiator [9], MIMO antenna with hexagonal slot loaded patches and parasitic elements [10], eight port square-ring slot radiator MIMO array antenna [11], circle shaped MIMO radiator using DGS [12], MIMO array antenna [13], fractal MIMO antenna [14], 4-port quad element based MIMO antenna with suppression of multi-tone interference [15], flower shaped MIMO radiator using theory of characteristics mode analysis [16], eight element MIMO antenna based on stepped impedance resonators (SIRs) [17], half-circular U-shaped slots based MIMO antenna for wireless systems [18], 8 element MIMO antenna system consisting of monopole-type meandered branch and an inverted U-shaped self-isolated antenna branch [19], minkowski shape MIMO radiators [20,21], kotch fractal UWB MIMO [22], V-slotted FSS integrated MIMO antenna with quare spiral parasitic elements [23], CPW fed symmetrical patch based MIMO antenna with slits incorporated ground plane [24], MIMO antenna with arc shaped slots based patches with defected ground structures [25], dual-antenna system with a driven branch, parasitic ground branch, and neutralization line [26], and fractal MIMO radiator using curves related to Koch hybrid and minkowski [27]. In literature, the design proces...…”

Section: Introductionmentioning

confidence: 99%

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Deep learning assisted fractal slotted substrate MIMO antenna with characteristic mode analysis (CMA) for Sub-6 GHz n78 5 G NR applications: design, optimization and experimental validation

Babu,

Sudipta,

Sree

et al. 2023

Phys. Scr.

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This article presents the design and optimization of a Deep Learning assisted MIMO antenna for 5G New Radio (NR) applications in Sub-6GHz band. The Prototype of the simulated geometry has been practically modelled and experimentally tested to validate the theoretical results. The optimized two-port MIMO antenna of 48 × 24 mm2 size is designed using fractal slotted substrate geometry. The concept of characteristic mode analysis (CMA) method is performed to characterize the performance of the proposed slotted substrate monopole MIMO Antenna. Usually, Optimization techniques based on traditional electromagnetic simulation tools (CST, HFSS, etc) are time-consuming for the design purpose of complex MIMO antenna geometries. The simulation studies using electromagnetic simulation tools are needed to be performed repeatedly to evaluate the optimum geometrical parameters for achieving better acceptable performance. In order to solve this issue, Deep Learning (DL) method-based design optimization approach is considered as an effective technique for determining the optimum physical parameters. In this article, Deep learning method based Dual-Channel type Deep Neural Network (DC-DNN) optimization technique is suggested to estimate the S-parameters. The generated data is fed to DC-DNN acting as a surrogate model to map the input features with the reflection and transmission coefficients, thereby enabling the search for the optimum design parameters to obtain the best performance. The diversity parameters are observed within acceptable limits and the characteristic parameters related to impedance and radiation performance are best suitable for lower sub-6 GHz n78 (3300–3800 MHz) 5G NR network applications.

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Section: Characteristic Mode Analysis Of the Proposed Techniquementioning

confidence: 99%

Section: Characteristic Mode Analysis Of the Proposed Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deep learning assisted fractal slotted substrate MIMO antenna with characteristic mode analysis (CMA) for Sub-6 GHz n78 5 G NR applications: design, optimization and experimental validation

Babu,

Sudipta,

Sree

et al. 2023

Phys. Scr.

Self Cite

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“…Previous literature has reported several MIMO antennas, how to realize high isolation between the radiating elements becomes the key difficulty in designing the UWB MIMO system. Different decoupling techniques have been discussed, such as defected ground structures, [4][5][6][7] fence-type decoupling structure, 8 short ground strip, 9 carbon black film, 10 neutralized line, 11,12 rectangular vertical arm in the ground plane, 13 and etching a slot in the ground plane. [14][15][16] Reported planar UWB MIMO antennas [17][18][19][20] have achieved good isolation without additional decoupling structures.…”

Section: Introductionmentioning

confidence: 99%

Three‐element ultrawideband MIMO antenna based on shared‐radiator structures with high efficiency and gain

Xue,

Li,

et al. 2024

Micro & Optical Tech Letters

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This letter presents a novel three‐port ultrawideband (UWB) multi‐input‐multi‐output (MIMO) antenna that covers the sub‐6 GHz (between 1.7 and 6 GHz) frequency band for wireless device applications. The proposed antenna consists of two parts: a dipole and two centrosymmetric slot antennas with shared structures. The radiating arm of the dipole can be reused as the large slot ground without increasing the size. The novel circular slot antenna etched on the radiator and circular microstrip feed line are designed to achieve wide impedance bandwidth. Meanwhile, four chamfers are loaded at the corners of the dipole to further optimize the impedance match in the whole frequency band. The physical dimension of the proposed three‐port MIMO antenna is 70 × 45 × 0.762 mm3. Experimental results validate that the reflection coefficient remains lower than −12 dB and the port isolation is better than 12 dB in the entire operational bandwidth without any decoupling network. The measured average peak gains are up to 5.6 dBi for all three ports, accompanied by a radiation efficiency of 90% across the frequency spectrum. With the advantages of simple design, high gain and high radiation efficiency, the proposed three‐element MIMO antenna design is well‐suited for implementation in UWB applications.

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“…With the continuous exploration of researchers, the methods to solve the mutual coupling of MIMO antenna have been summarized one after another. In [10,11], a technique called neutralization-line was described that neutralized the coupled reverse current. The parasitic structure was used to enhance isolation in [12,13].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of metasurface-based CPW-Fed UWB MIMO antenna for wireless communication systems

Li,

Yang,

Cheng

et al. 2023

Phys. Scr.

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A compact 4-port coplanar waveguide (CPW) fed ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna with enhanced isolation is proposed to operate from 3.66 GHz to 16.61 GHz with 127.78 % impedance bandwidth. The proposed antenna system consists of four orthogonal arrays of monopole antennas improved by four iterations.The UWB characteristic of the antenna is obtained from an improved monopole antenna fed by CPW. The final MIMO antenna is printed on a Rogers 4003C substrate with dimensions of 60 × 60 × 0.3 mm3.The orthogonal arrangement of antennas brings about the polarization diversity and certain isolation of MIMO antennas.Four rows of orthogonal metasurface elements with via holes and the ring of the backplane further improve the isolation between antenna elements in the MIMO system. The measured results of MIMO antenna agree with the simulated results. The MIMO antenna achieves an impedance bandwidth of 12.95 GHz with S11 < -10 dB and good isolation ( S21 = S41 < -30 dB and S31 < -20 dB). In particular, S31 is always less than -25 dB at frequencies greater than 6 GHz. The optimized MIMO antenna has the advantages of UWB, compact size, good radiation, and enhanced isolation, which shows that it has potential application value in UWB wireless communication systems.

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Broadband sub‐6 GHz flower‐shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications

Cited by 33 publications

References 78 publications

Deep learning assisted fractal slotted substrate MIMO antenna with characteristic mode analysis (CMA) for Sub-6 GHz n78 5 G NR applications: design, optimization and experimental validation

Deep learning assisted fractal slotted substrate MIMO antenna with characteristic mode analysis (CMA) for Sub-6 GHz n78 5 G NR applications: design, optimization and experimental validation

Three‐element ultrawideband MIMO antenna based on shared‐radiator structures with high efficiency and gain

Design and analysis of metasurface-based CPW-Fed UWB MIMO antenna for wireless communication systems

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