Preconditioned Electric Field Integral Equation Using Calderon Identities and Dual Loop/Star Basis Functions

被引：73

作者：

Stephanson, Matthew B. ^{[1
]}

Lee, Jin-Fa ^{[1
]}

机构：

[1] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2009年 / 57卷 / 04期

关键词：

Duality; electric field integral equation (EFIE); preconditioning; ELECTROMAGNETIC SCATTERING; FORMULATION; FREQUENCY; COMPLEX; EFIE;

D O I：

10.1109/TAP.2009.2016173

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：

An analytic preconditioner for the electric field integral equation, based on the Calderon identities, is considered. It is shown, based on physical reasoning, that RWG elements are not suitable for discretizing the electric field integral operator appearing in the preconditioner. Instead, the geometrically dual basis functions proposed by Buffa and Christiansen are used. However, it is found that this preconditioner is vulnerable to roundoff errors at low frequencies. A loop/star decomposition of the Buffa-Christiansen basis functions is presented, along with numerical results demonstrating its effectiveness.

引用

页码：1274 / 1279

页数：6

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