Integral Equation Formulations for Characteristic Modes of Dielectric and Magnetic Bodies

被引:54
|
作者
Hu, Fu-Gang [1 ,2 ]
Wang, Chao-Fu [1 ]
机构
[1] Natl Univ Singapore, Temasek Labs, Singapore 117411, Singapore
[2] Cadence Design Syst Inc, San Jose, CA 95134 USA
关键词
Characteristic modes; dielectric bodies; generalized eigenvalue equations; Hermitian matrices; integral equation (IE) method; magnetic bodies; resonant frequencies; SCATTERING;
D O I
10.1109/TAP.2016.2570810
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
Five types of surface integral equation (IE) formulations are presented to determine the characteristic modes of dielectric and magnetic bodies. It should be noted that these five formulations are derived in a unified manner. Instead of directly using the IE coefficient matrices of scattering problems, this paper presents the formulations in a more natural and rigorous way. The IE formulations result in the generalized real symmetric eigenvalue equations for the characteristic modes. It is found that the eigenvalues of the first four formulations indicate the negative or positive imaginary part of the complex power of the characteristic modes, which are zero at resonance. The first two IE formulations result in two new generalized eigenvalue equations, while the last three IE formulations lead to the same generalized eigenvalue equations as in the references. Moreover, the first two formulations can be immune from spurious modes from which the third and fourth formulations suffer.
引用
收藏
页码:4770 / 4776
页数:7
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