Design of a Miniaturized 2.5-D Frequency Selective Surface With Angular Incidence and Polarization Stability

Chaluvadi, Mahesh; Kanth, V. Krushna; Thomas, K. George

doi:10.1109/temc.2020.2980622

Cited by 21 publications

(12 citation statements)

References 30 publications

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“…Moreover, for the exaction, the optimization technique based on a hybrid algorithm has been used. 24 As shown in Figure 3D, the frequency response curve obtained using ADS shows good agreement with the full-wave simulated curves in HFSS.…”

Section: Characterization Of the Unit-cell Behaviorsupporting

confidence: 63%

“…By closely fitting the curves of ECM with those acquired from full‐wave simulator HFSS, the lumped component values are extracted. Moreover, for the exaction, the optimization technique based on a hybrid algorithm has been used 24 . As shown in Figure 3D, the frequency response curve obtained using ADS shows good agreement with the full‐wave simulated curves in HFSS.…”

Section: Characterization Of the Unit‐cell Behaviormentioning

confidence: 76%

“…20 In Niaz et al, 21,22 convoluted square rings and tapered meandering lines are implemented with multiple vertical vias for the unit cell miniaturization to obtain high angular stability. In Shi et al 23 and Chaluvadi et al, 24 a simple approach of implementing a closed-loop structure with only four vertical vias is used. The overall perimeter of the structure increases with an ultraminiaturized structure, thus enhancing the angular stability.…”

Section: Introductionmentioning

confidence: 99%

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Design and demonstration of a 2.5D frequency‐selective surface for sub‐6 GHz 5G wireless communication

Katoch

Jaglan

Gupta

et al. 2022

Micro & Optical Tech Letters

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This paper presents an ultraminiaturized bandstop closed‐loop 2.5D frequency‐selective surface (FSS) for sub‐6 GHz 5G wireless communication. Four metallic vertical vias interconnect metallic elements present on both sides of the substrate to form a modified closed‐loop design. The proposed structure band stops the entire sub‐6 GHz 5G band (C‐band/NR N78 band/LTE 42/43 band) ranging from 3.2 to 3.9 GHz with a resonant notch at 3.62 GHz. This design supports polarization insensitivity and procures maximum relative deviation of 0.5% and 0.2% at 80°incident transverse electric (TE) and transverse magnetic (TM) polarized waves, respectively. The proposed FSS prototype has been fabricated and tested. Experimentally, the resonant notch is obtained at 3.55 and 3.68 GHz under TE and TM normal incident polarized waves, respectively. Moreover, good agreement in the frequency response curves is observed between simulated and measured results. The proposed unit cell is 3.6 × 3.6 mm2 in dimensions, which is 0.04λ × 0.04λ, where λ is the resonant wavelength.

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Section: Characterization Of the Unit-cell Behaviorsupporting

confidence: 63%

Section: Characterization Of the Unit‐cell Behaviormentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

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Design and demonstration of a 2.5D frequency‐selective surface for sub‐6 GHz 5G wireless communication

Katoch

Jaglan

Gupta

et al. 2022

Micro & Optical Tech Letters

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“…[1][2][3] Many works have reported frequency selective surface (FSS) used as radome, metamaterial absorber and microwave blocker. 4 Electromagnetic shielding means electromagnetic waves were blocked in the whole range of frequency. And frequency selective electromagnetic shielding is attenuating the unwanted electromagnetic radiation in a particular frequency emitted from various electrical and electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic shielding behaviors of planar frequency selective surface fabrics, with emphasis on decoupling analysis, lamination direction and tunable selective frequency

Zheng

Wang

Zhu

et al. 2022

Journal of Industrial Textiles

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Planar frequency selective surface (FSS) fabrics with grids, strips or patches by simple methods of patching, embroidery, clipping and carving were fabricated. The periodic structures, laminated structures, processing method and materials pertaining to the electromagnetic shielding behaviors were investigated. Firstly, equivalent circuit and electromagnetic (EM) shielding behavior of basic frequency selective structure units and complex fretwork structure were provided, involving the decoupling of complex fretwork structure. In addition, various laminating structures of SPs and SGs were determined, one of superposition of SPs and SGs provides a SE peak of 40.2 dB (average SE of 25.1 dB in the whole frequency domain), the other presents a SE peak of 27.1 dB (average SE of 19.1 dB in the whole frequency regime). Furthermore, tunable selective electromagnetic shielding by a simple mechanical way was provided, which can realize a tunable SE peak varying from 730 MHz to 1580 MHz. This work might provide a perspective for the assemble and analytical approximation of FSS fabrics for scientists and engineers in this cross-disciplinary field.

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“…The third miniaturization technique is obtained by extending the unit cell along the axis parallel to the propagation vector. In [10] and [11] it is suggested to extend the unit cell towards the propagation axis of a convoluted and spiral FSS structure, respectively. This type of miniaturization is known as 2.5D configuration.…”

Section: Introductionmentioning

confidence: 99%

Interwoven Hexagonal Frequency Selective Surface: An Application for WiFi Propagation Control

Vásquez-Peralvo

Fernández-González

Rigelsford³

et al. 2021

IEEE Access

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A sub-wavelength band stop unit cell Frequency Selective Surface, comprising six continuously interwoven hexagonal unit cells and arranged as a tessellated surface, is proposed, analyzed, simulated, and measured. The broadband and sub-wavelength characteristics of this unit cell, below the typical λ 0 /2, are analyzed and discussed. It has been demonstrated that by using the unit cell proposed in this paper, a 22% increase in the fractional bandwidth can be achieved along with a substantial improvement in its angular stability at high angles of incidence, compared to similar works previously published. The analysis of this unit cell is performed using the equivalent circuit method that allows relating the number of interweaves with the equivalent capacitance and inductance, thus giving a better understanding of the unit cell characterization. In addition, a frequency selective surface arranged in a 2.5D configuration is also proposed. This 2.5D configuration provides a bandwidth similar to the conventional model but with a reduction in the resonance frequency by 44%. Simulations have been validated using two prototypes, each having an overall dimension of 400 x 400 mm. To demonstrate the scalability of the design, both prototypes are designed to be used as WiFi propagation control, working as a band stop filter at 2.4 and 5.8 GHz, respectively. Transmission coefficients have been measured for TE and TM-modes using an optical bench at angles of incidence from 0 to 60 • . These compare favorably with simulations performed using the frequency domain solver in CST Microwave Studio and are found to have a maximum MSE of 2.3 ×10 −3 .

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Design of a Miniaturized 2.5-D Frequency Selective Surface With Angular Incidence and Polarization Stability

Cited by 21 publications

References 30 publications

Design and demonstration of a 2.5D frequency‐selective surface for sub‐6 GHz 5G wireless communication

Design and demonstration of a 2.5D frequency‐selective surface for sub‐6 GHz 5G wireless communication

Electromagnetic shielding behaviors of planar frequency selective surface fabrics, with emphasis on decoupling analysis, lamination direction and tunable selective frequency

Interwoven Hexagonal Frequency Selective Surface: An Application for WiFi Propagation Control

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