A Physical Optics Approach to the Analysis of Large Frequency Selective Radomes

D'Elia, U.F.; Pelosi, Giuseppe; Pichot, Christian; Selleri, Stefano; Zoppi, and Massimo

doi:10.2528/pier13012810

Cited by 14 publications

(9 citation statements)

References 34 publications

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“…The microstrip antennas of the CLAS are covered with a composite radome, which plays the dual roles of wave transparency and load bearing. There are three typical methods to analysis the electromagnetic property of the radome: one is high frequency method [20][21][22] (e.g., PO, GO), another one is fullwave method [23][24][25] (e.g., FEM, FDTD, MOM), and the last one is hybrid method [26,27] frequency method and is adopted in this work. Compared to accurate full-wave method or efficient hybrid method, the RT-SI approach has the acceptable accuracy, and, more important, it has clear physical principle and the possibility to reveal the relation of far field data, radome, and near field data [28].…”

Section: The Conventional Analysis Process Of the Clasmentioning

confidence: 99%

A Novel Inversion Method of Manufacturing Flaws in the Packaging of Conformal Load-Bearing Antenna Structure

Song

et al. 2015

International Journal of Antennas and Propagation

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Composite material is widely used in the conformal load-bearing antenna structure (CLAS), and the manufacturing flaws in the packaging process of the CLAS will lead to the degradation of its wave-transparent property. For this problem, a novel inverse method of the flaw's dimension by antenna-radome system's far field data has been proposed. Two steps are included in the inversion: the first one is the inversion from the far filed data to the transmission coefficient of the CLAS's radome; the second one is the inversion from the transmission coefficient to the flaw's dimension. The inversion also has a good potential for the separable multilayer composite material radome. A 12.5 GHz CLAS with microstrip antenna array is used in the simulation, which indicates the effectiveness of the novel inversion method. Finally, the error analysis of the inversion method is presented by numerical simulation; the results is that the inversed error could be less than 10%, if the measurement error of far field data is less than 0.45 dB in amplitude and ±5 ∘ in phase.

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Section: The Conventional Analysis Process Of the Clasmentioning

confidence: 99%

A Novel Inversion Method of Manufacturing Flaws in the Packaging of Conformal Load-Bearing Antenna Structure

Song

et al. 2015

International Journal of Antennas and Propagation

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“…To understand electromagnetic properties of the radomes, there have been extensive studies on various radome configurations [1][2][3][4][5][6][7][8][9][10]. The radiation from a circular aperture surrounded by a hemisphere radome was predicted based on the dyadic Green's function technique and physical optics (PO) method [2].…”

Section: Introductionmentioning

confidence: 99%

“…Instead, a frequency selective surface (FSS) radome, which is a curved FSS within a multi-layer radome, is employed to reduce RCS over a wide frequency range because it exhibits bandpass or bandstop characteristics. Previous studies have investigated electromagnetic characteristics of single-and multi-layer FSS radomes based on the pole residue matching (PRM) [8] and the ray tracing technique [9,10].…”

Section: Introductionmentioning

confidence: 99%

Radiation from a Cavity-Backed Circular Aperture Array Antenna Enclosed by an FSS Radome

et al. 2018

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Radiation from a cavity-backed circular aperture array antenna enclosed by a frequency selective surface (FSS) radome is studied using the hybrid analysis method, by combining the mode matching method, the ray tracing technique, and Huygens's principle. The equivalent magnetic surface currents on the apertures are derived from the aperture electromagnetic fields, which are calculated based on the mode matching method. The rays are generated from the equivalent magnetic surface currents and used to analyze the FSS radome based on the ray tracing technique. After being obtained from both the mode matching method and the ray tracing technique, electromagnetic fields on an outermost radome are transformed into the equivalent electric and magnetic surface currents using Huygens's principle. The radiated fields are computed from the equivalent surface currents and compared with the measured data.

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“…In view of computational efficiency, the physical optics approach, which can get acceptable results for the analysis of radome with smooth and large curvature radius surface [13,15], is adopted. The field radiate from the aperture of the antenna is assumed as a Huygens' source and transmits through the FSS radome.…”

Section: Solving Transmission Performance Of Radome Based On Asmmentioning

confidence: 99%

“…Thus, high-frequency method based on the approximate locally planar technique method is required for an approximate description [10][11][12][13]. The incidence angles continuously vary along the curved radome surface.…”

Section: Introductionmentioning

confidence: 99%

Efficient Multi-Objective Optimization of Frequency Selective Radome With Nonuniform Wall Thickness

Ma¹,

Wan²

2014

PIER M

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Abstract-An efficient optimization technique for frequency selective surface (FSS) radome with nonuniform wall thickness is proposed to improve the power transmission efficiency and the boresight error (BSE) of FSS radome simultaneously. The high-frequency method based on the approximate locally planar technique is used to evaluate the transmission performance of FSS radome. An efficient multi-dimensional adaptive sampling method combined with spectral domain method of moment (MoM) is employed to analyze transmission performance of FSS structure. The immune clone algorithm (ICA) is applied to the design of a FSS radome, in which the linear combination of the maximizing power transmission efficiency and the minimizing BSE is adopted as the affinity function, and the radome wall thickness is optimized. A design example for the three-dimensional tangent ogive radome with nonuniform thickness is given. The results show that the power transmission efficiency is improved significantly and the BSE of the optimal antenna-radome system is also reduced over the antenna scan volume.

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A Physical Optics Approach to the Analysis of Large Frequency Selective Radomes

Cited by 14 publications

References 34 publications

A Novel Inversion Method of Manufacturing Flaws in the Packaging of Conformal Load-Bearing Antenna Structure

A Novel Inversion Method of Manufacturing Flaws in the Packaging of Conformal Load-Bearing Antenna Structure

Radiation from a Cavity-Backed Circular Aperture Array Antenna Enclosed by an FSS Radome

Efficient Multi-Objective Optimization of Frequency Selective Radome With Nonuniform Wall Thickness

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