Analysis of scattering from rough surfaces at large incidence angles using a periodic-surface moment method

1995 ◽  
Vol 33 (5) ◽  
pp. 1206-1213 ◽  
Author(s):  
R. Chen ◽  
J.C. West
Keyword(s):  
Moment Method ◽  
Rough Surfaces ◽  
Periodic Surface ◽  
Surface Moment

Periodic Numerical Rough Surface Filtered Generation

2020 ◽  
Vol 143 (8) ◽  
Author(s):  
Runqing Liu ◽  
Tao Tao ◽  
Xuesong Mei
Keyword(s):  
Rough Surface ◽  
Rough Surfaces ◽  
Target Surface ◽  
Statistical Parameters ◽  
Random Surface ◽  
Periodic Surface ◽  
Actual Surface ◽  
Maximum Period ◽  
Good Improvement ◽  
Random Part

Abstract Numerical surface filtered generation is one of the main methods for generating numerical rough surfaces, but when faced with rough surfaces with waviness or large periodicity, traditional filtering methods cannot be implemented well. Because of this, the paper adopts the method of decomposing and synthesizing the maximum period and random part of the periodic rough surface. By decomposing the statistical parameters of the target surface, the statistical parameters of the ideal periodic surface and the random surface are generated, respectively, and then according to the surface parameters generate the surfaces and synthesize them. By comparing the statistical parameters and morphology of the synthesized surface with its actual surface, it can be found that this method can well achieve the generation of periodic rough surfaces, which is a good improvement to the original filter generation method.

scholarly journals Analyze of Frequency Selective Surfaces By Hybrid MOM-PO-GTD Method

2019 ◽  
Author(s):  
samir mendil ◽  
Taoufik Aguili
Keyword(s):  
Hybrid Method ◽  
Moment Method ◽  
Performance Metrics ◽  
Frequency Selective Surface ◽  
Frequency Selective Surfaces ◽  
Incoming Wave ◽  
Periodic Surface ◽  
New Approach ◽  
Frequency Selective ◽  
Microwave Regime

Abstract This article intends to analyze the Diraction phenomena of the incoming wave and provide a new approach for analyzing the frequency selective surface (Fss) by using a hybrid method combining Moment Method (MoM), optical physics (PO) with General theory of Diffraction (GTD). the frequency selective surface (Fss) is a periodic surface with identical two-dimensional arrays of elements arranged on a substrate dielectric. An incoming plane wave will either be transmitted (bandwidth) or reflected (stopband), completely or partially, depending on the nature of the array element. Today, FSSs have been extensively studied and there is tremendous growth in its design and implementation for different applications at the microwave to optical frequency ranges. In this review article, we present a new hybrid method form on Moment method and GTD for analyzing different categories of FSS based on the design of the structure, the array elements used, and applications. We also focus on the effects of diffraction, methodology, experimental verications of design examples, as well as on prospects and challenges, particularly in the microwave regime. We highlight their important performance metrics, especially about progress in this area could facilitate advanced electromagnetic innovation.

Reliability analysis using an enhanced response surface moment method

2008 ◽  
Vol 22 (6) ◽  
pp. 1052-1057 ◽  
Author(s):  
Dong-Ho Kim ◽  
Gabseong Lee ◽  
Dong-Hoon Choi ◽  
Jin-Ho Choi ◽  
Sang Hoon Lee ◽  
...  
Keyword(s):  
Reliability Analysis ◽  
Response Surface ◽  
Moment Method ◽  
Surface Moment

A Stationary Solution of High-Energy Electron Reflection (HEER) for An Arbitrary Surface

1990 ◽  
Vol 48 (2) ◽  
pp. 374-375
Author(s):  
YIQUN MA
Keyword(s):  
Stationary Solution ◽  
High Energy ◽  
Bloch Wave ◽  
Dynamical Theory ◽  
High Energy Electron ◽  
Bulk Materials ◽  
Periodic Surface ◽  
Electron Transmission ◽  
Electron Reflection ◽  
Long Time

For a long time, the development of dynamical theory for HEER has been stagnated for several reasons. Although the Bloch wave method is powerful for the understanding of physical insights of electron diffraction, particularly electron transmission diffraction, it is not readily available for the simulation of various surface imperfection in electron reflection diffraction since it is basically a method for bulk materials and perfect surface. When the multislice method due to Cowley & Moodie is used for electron reflection, the “edge effects” stand firmly in the way of reaching a stationary solution for HEER. The multislice method due to Maksym & Beeby is valid only for an 2-D periodic surface.Now, a method for solving stationary solution of HEER for an arbitrary surface is available, which is called the Edge Patching method in Multislice-Only mode (the EPMO method). The analytical basis for this method can be attributed to two important characters of HEER: 1) 2-D dependence of the wave fields and 2) the Picard iteractionlike character of multislice calculation due to Cowley and Moodie in the Bragg case.

Infrared spectra of carbon monoxide on platinum, iridium and copper ; comparison of flat and rough surfaces

1981 ◽  
Vol 78 ◽  
pp. 927-932 ◽  
Author(s):  
F.J.C.M. Toolenaar ◽  
G.J. van der Poort ◽  
F. Stoop ◽  
V. Ponec
Keyword(s):  
Carbon Monoxide ◽  
Infrared Spectra ◽  
Rough Surfaces

OPTICAL PROPERTIES OF THIN FILMS ON ROUGH SURFACES

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-363-C10-366 ◽  
Author(s):  
J. Vlieger ◽  
M. M. Wind
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Rough Surfaces
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