Analysis of Partial Modification Problems Using Integral Equation Discontinuous Galerkin With Mesh Modification Algorithm

被引：2

作者：

Li, Xiaojie ^{[1
]}

Shen, Ziang ^{[1
]}

Chen, Xinlei ^{[1
,2
,3
]}

Gu, Changqing ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Peoples R China

[2] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China

[3] Nanjing Univ Informat Sci & Technol, KLME & CIC FEMD, Nanjing 210044, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2021年 / 20卷 / 10期

关键词：

Method of moments; Junctions; Integral equations; Impedance; Radar imaging; Partitioning algorithms; Microwave photonics; Integral equation discontinuous Galerkin (IEDG); mesh modification algorithm (MMA); method of moments (MoM); partial modification method (PMM); DOMAIN DECOMPOSITION SCHEME; SCATTERING; MULTISCALE; INVERSE;

D O I：

10.1109/LAWP.2021.3101122

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The method based on the partitioned inverse matrix formula and the Sherman-Morrison-Woodbury formula has been developed to solve the partial modification problems efficiently. However, it requires the meshes of the mother-structure, the add-structure, and the subtract-structure are separated or conformal. It is inconvenient and inflexible for users. In this letter, the integral equation discontinuous Galerkin (IEDG) with a mesh modification algorithm (MMA) is proposed to mitigate this problem. With the help of the IEDG and the MMA, the mother-structure and the add-structure can be meshed independently, and the mesh errors caused by removing the subtract-structure from the mother-structure are reduced. Numerical results are given to demonstrate the advantages of the improved method.

引用

页码：1948 / 1952

页数：5

共 15 条

[1] A Nonconformal Domain Decomposition Scheme for the Analysis of Multiscale Structures [J].

Bautista, Mario A. Echeverri ;

Vipiana, Francesca ;

Francavilla, Matteo Alessandro ;

Vasquez, Jorge A. Tobon ;

Vecchi, Giuseppe .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2015, 63 (08) :3548-3560

[2] Analysis of Partial Geometry Modification Problems Using the Partitioned-Inverse Formula and Sherman-Morrison-Woodbury Formula-Based Method [J].

Chen, Xinlei ;

Gu, Changqing ;

Zhang, Yang ;

Mittra, Raj .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2018, 66 (10) :5425-5431

[3]

Gibson W.C., 2007, The Method of Moments in Electromagnetics

[4] UPDATING THE INVERSE OF A MATRIX [J].

HAGER, WW .

SIAM REVIEW, 1989, 31 (02) :221-239

[5] A Domain Decomposition Scheme With Curvilinear Discretizations for Solving Large and Complex PEC Scattering Problems [J].

Han, Kui ;

Chen, Yongpin ;

Que, Xiaofeng ;

Jiang, Ming ;

Hu, Jun ;

Nie, Zaiping .

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2018, 17 (02) :242-246

[6] A Discontinuous Galerkin Self-Dual Integral Equation Method for Scattering From IBC Objects [J].

Huang, Xiao-Wei ;

Sheng, Xin-Qing .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2019, 67 (07) :4708-4717

[7] Genetic algorithms and method of moments (GA/MOM) for the design of integrated antennas [J].

Johnson, JM ;

Rahmat-Samii, Y .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1999, 47 (10) :1606-1614

[8] AN ADD-ON METHOD FOR THE ANALYSIS OF SCATTERING FROM LARGE PLANAR STRUCTURES [J].

KASTNER, R .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1989, 37 (03) :353-361

[9] A Discontinuous Galerkin Surface Integral Equation Method for Scattering From Multiscale Homogeneous Objects [J].

Kong, Bei-Bei ;

Sheng, Xin-Qing .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2018, 66 (04) :1937-1946

[10]

Laviada J., IEEE ANTENNAS WIRELE, V9, P834

← 1 2 →