A Flexible and Efficient Method for the Analysis of Electromagnetic Scattering by Inhomogeneous Objects With Honeycomb Structures

Yang, Ming‐Lin; Yuan, Xinrui; Yang, Zeng; Gou, Mingjiang; Sheng, Xin‐Qing

doi:10.1109/lawp.2021.3138133

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…R x , R y , and R z represent the Euler rotations when the point P L n rotates around x G -, y G -and z G -axes by specific angles (α, β, and γ), respectively [24], [25]. The aforementioned Euler rotation matrices and angle definitions are based on the right-hand coordinate system.…”

Section: Applicability Extension Of the Principle Of Pattern Multipli...mentioning

confidence: 99%

Applicability Extension and Calculation Acceleration of Pattern-Multiplication Principle in Far-Field Analysis of Conformal Arrays

Zhao,

Cheng,

Liao

et al. 2023

Preprint

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<p>This paper proposes a near-field Euler rotation-based technique to transform the far-field calculation of arbitrary conformal arrays into the pattern-multiplication form. Additionally, the calculation is greatly accelerated by a three-dimensional virtual equivalent source expansion (3-D VESE) technique and a layer-wise two-dimensional fast Fourier transform (2-D FFT) technique. Computational complexity analysis and several numerical examples validate the advantages of the proposed solution in terms of the efficiency and accuracy.</p>

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Section: Applicability Extension Of the Principle Of Pattern Multipli...mentioning

confidence: 99%

Applicability Extension and Calculation Acceleration of Pattern-Multiplication Principle in Far-Field Analysis of Conformal Arrays

Zhao,

Cheng,

Liao

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the sidelobe level (SLL) is reduced by reflection metal printed on the back of the lower substrate. Additionally, it is known that the EM parameters of the honeycomb core layer have a great influence on the performance of the conformal antenna [ 19 , 20 , 21 , 22 ]. For this purpose, an equivalent medium model of the honeycomb core layer is proposed for the simulation of the conformal load-bearing structure.…”

Section: Introductionmentioning

confidence: 99%

Broadband Flexible Microstrip Antenna Array with Conformal Load-Bearing Structure

et al. 2023

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To enhance the load-bearing mechanical properties and broadband electromagnetic characteristics of the conformal antenna, a broadband microstrip antenna array with a conformal load-bearing structure is proposed in this paper, which consists of three flexible substrate layers and two honeycomb core layers stacked on each other. By combining the antenna and honeycomb core layer in a structural perspective, the antenna array is implemented in the composition function of surface conformability and load-bearing. Additionally, the sidelobe level of the antenna is suppressed based on the reflection surface loaded. Meanwhile, an equivalent model of a honeycomb core layer has been established and applied in the design of a conformal antenna with a load-bearing structure. The presented model increases the accuracy of simulated results and reduces the memory consumption and time of the simulation. The overall size of the proposed antenna array is 32.84 × 36.65 × 4.9 mm (1.36 λ0 × 1.52 λ0 × 0.2 λ0, λ0 is the wavelength at 12.5 GHz). The proposed antenna element and array have been fabricated and measured in the flat state and under other various bending states. Experiment results show the operating relative bandwidth of the antenna array is 20.68% (11.67–13.76 GHz and 14.33–14,83 GHz) in the flat state. Under different bending conditions, the proposed antenna array covers 24.16% (11.08–14.1 GHz), 23.82% (10.63–13.5 GHz), and 23.12% with 30°, 60°, and 90° in the xoz plane (11.55–14.33 GHz). In terms of mechanical load bearing, the structure has better performance than the traditional single-layer honeycomb core load-bearing structure antenna.

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“…Te previous research mainly involved the analytical model of infnite reinforced concrete to solve the propagation characteristics of the main frequency points in communication propagation. For example, Holloway et al used the equivalent parameter theory of composite structures [8,9] to study the short path propagation characteristics of infnite reinforced concrete layers [10]. Savov et al regard nonuniform reinforced concrete structure as homogeneous medium structure through the homogenization technology of the periodic structure, and then used the propagation matrix method to calculate the transmission characteristics of the infnite reinforced concrete layer [11].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Shielding Effectiveness of the Cavity Built with Single-Layer Reinforced Concrete

Sun

Wei

et al. 2022

International Journal of Antennas and Propagation

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In view of the existing literature mainly studying the situation of infinite reinforced concrete structure, the shielding effectiveness of three-dimensional single-layer reinforced concrete cavity is studied by considering the structural parameters of steel and the electromagnetic parameters of the concrete. The influence of structure parameters of steel mesh size, the steel diameter, and electromagnetic parameters of concrete dielectric coefficient, conductivity and moisture content on shielding effectiveness of reinforced concrete are analyzed. The research shows that the shielding effectiveness of the reinforced concrete cavity structure has resonance characteristics, and the increase of concrete conductivity and moisture content weaken the resonance characteristics of it so that the shielding effectiveness of the reinforced structure is improved. The results of this paper have a reference value for the analysis of shielding effectiveness of the single-layer reinforced concrete cavity in different practical situations.

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A Flexible and Efficient Method for the Analysis of Electromagnetic Scattering by Inhomogeneous Objects With Honeycomb Structures

Cited by 10 publications

References 16 publications

Applicability Extension and Calculation Acceleration of Pattern-Multiplication Principle in Far-Field Analysis of Conformal Arrays

Applicability Extension and Calculation Acceleration of Pattern-Multiplication Principle in Far-Field Analysis of Conformal Arrays

Broadband Flexible Microstrip Antenna Array with Conformal Load-Bearing Structure

Analysis of Shielding Effectiveness of the Cavity Built with Single-Layer Reinforced Concrete

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