Broadband Vector Potential Dyadic Green's Function and Normal Modes in 3-D Cavity of Irregular Shape

被引：2

作者：

Sanamzadeh, Mohammadreza ^{[1
]}

Tsang, Leung ^{[1
]}

机构：

[1] Univ Michigan, Dept Elect & Comp Engn, Radiat Lab, Ann Arbor, MI 48105 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2020年 / 68卷 / 08期

关键词：

Cavity resonators; Electric potential; Broadband communication; Shape; Geometry; Integral equations; Eigenvalues and eigenfunctions; Dyadic Green's function (GF); microwave cavities; numerical methods; vector potential; WAVE-GUIDE; SCATTERERS; CONDUCTOR;

D O I：

10.1109/TMTT.2020.2993465

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：

A hybrid spatial-spectral method for rapid and broadband calculation of the vector potential normal modes and dyadic Green's function (GF) inside the cavity of irregular shape is presented. In the broadband method of simulation, the normal modes of the irregular cavity, which are independent of operation frequency, are first computed through a linear eigenvalue problem based on a hybrid representation of the regular (rectangular) cavity. The method is based on the extraction of the singularity of the GF that results in a rapidly convergent hybrid spatial-spectral expansion of the GF. The method is applied to a V-grooved cavity to obtain the vector potential GF inside the cavity, and the results are shown over a broad range of frequencies. The results of the hybrid method are in good agreement with that of direct method of moment (MoM), while the hybrid method is much more efficient than direct MoM as the latter requires the computation at one frequency at a time.

引用

页码：3210 / 3218

页数：9

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