Electromagnetic Optimal Design and Preparation of Broadband Ceramic Radome Material With Graded Porous Structure

Chen, Fei; Shen, Qiang; Zhang, Lianmeng

doi:10.2528/pier10012005

Cited by 87 publications

(50 citation statements)

References 25 publications

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“…R ⊥ , R // , T ⊥ , T // are the reflection and transmission coefficients for the perpendicular and parallel polarization components [7,20]. The reflected fields on the inner surface may bounce in the radome and they have important effects on the flash lobe of the antenna-radome system [12][13][14].…”

Section: The Ai-si Methodsmentioning

confidence: 99%

Fast Analysis of Electrically Large Radome in Millimeter Wave Band With Fast Multipole Acceleration

Meng¹,

Dou²

2011

PIER

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Abstract-Radome has strong effects on the radiation performances of the antenna in millimeter wave band. In this paper, the aperture integration-surface integration (AI-SI) method is adopted to analyze the electrically large antenna-radome system. The fast multipole method (FMM) is proposed to accelerate the aperture integration and inner surface integration in the AI-SI method. An electrically large antenna-radome system at W band is analyzed and measured. The radiation patterns of the system calculated using the AI-SI method with and without the fast multipole acceleration and the measured patterns are compared. The calculated patterns agree very well with each other, and both have the same agreement with the experimental results. However, the computational time of the proposed analysis with the fast multipole acceleration is reduced significantly.

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Section: The Ai-si Methodsmentioning

confidence: 99%

Fast Analysis of Electrically Large Radome in Millimeter Wave Band With Fast Multipole Acceleration

Meng¹,

Dou²

2011

PIER

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“…Many methods have been proposed to design broadband graded media radome walls. Generally, they can be classified into three types of methods, such as analytical methods [6][7][8][9], hypotheses formulation methods [10,11] and numerical optimization methods [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Graded Materials for Broadband Radome Wall With DRR Control Using a Hybrid Method

Zhang¹,

Zhao²,

Nie³

et al. 2015

PIER M

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Abstract-A graded material structure is optimized for broadband radome application by using hybrid method in this paper. In the optimization, dynamic range ratio (DRR) of real permittivity and loss of material are taken into considerations. By using an analytical function, the optimization problem with the DRR constraint is converted to an unconstrained problem. The proposed hybrid method is a combination of trust region method (TRM) and genetic algorithm (GA). Firstly (TRM) is applied to optimize the dielectric constant distribution. Then the result of TRM is used as initial value of GA. GA is employed to improve the global property of the results provided by TRM. Because TRM has the advantage of fast searching speed and GA has the advantage of global property, the hybrid method has the feature of fast convergence speed. And the jitter property of GA permittivity distribution is moderated. The effectiveness of the hybrid is validated through the designs of two broadband radome walls. The minimum power transmission efficiency is 81.9% ranging from 1 GHz to 18 GHz for normal incidence.

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“…The metallic strip gratings are very sensitive to the polarization and angle of incidence. For the configurations considered in the work, the design parameters of the metallic strip gratings (width and pitch) and radome EM performance parameters are computed based on the equivalent transmission line method 13,14 in conjunction with equivalent circuit model 15 . It is observed that for a given radome wall configuration with identical materials and dimensions, the radome EM performance characteristics are generally superior for parallel polarization, as compared to perpendicular polarization at a given incidence angle.…”

Section: Introductionmentioning

confidence: 99%

Application of Metallic Strip Gratings for Enhancement of Electromagnetic Performance of A-sandwich Radome

Nair¹,

Madhumitha²,

Jha³

2013

DSJ

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Enhancement of the electromagnetic (EM) performance characteristics of A-sandwich radome wall over X-band using metallic strip gratings is presented in this work. Equivalent transmission line method in conjunction with equivalent circuit model (ECM) is used for modeling the A-sandwich radome panel with metallic strip gratings and the computation of radome performance parameters. Metallic strip grating embedded in the mid-plane of the core and those in the skin-core interface are the configurations considered in the present work. For a given thickness of metallic strip grating, its width and pitch are optimized at different angles of incidence such that the new radome wall configuration offers superior EM performance over the entire X-band as compared to the conventional A-sandwich wall. The EM analysis shows that the superior EM performance of A-sandwich with metallic strip gratings makes it suitable for the design of normal incidence and streamlined airborne radomes.

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Electromagnetic Optimal Design and Preparation of Broadband Ceramic Radome Material With Graded Porous Structure

Cited by 87 publications

References 25 publications

Fast Analysis of Electrically Large Radome in Millimeter Wave Band With Fast Multipole Acceleration

Fast Analysis of Electrically Large Radome in Millimeter Wave Band With Fast Multipole Acceleration

Optimization of Graded Materials for Broadband Radome Wall With DRR Control Using a Hybrid Method

Application of Metallic Strip Gratings for Enhancement of Electromagnetic Performance of A-sandwich Radome

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