A surface integral equation method for dielectrics at low frequencies

Xia, Tian

Permalink

https://hdl.handle.net/2142/72907 Copy

Description

Title

A surface integral equation method for dielectrics at low frequencies

Author(s)

Xia, Tian

Issue Date

2015-01-21

Director of Research (if dissertation) or Advisor (if thesis)

Chew, Weng C.

Department of Study

Electrical & Computer Eng

Discipline

Electrical & Computer Engr

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• Computational Electromagnetics
• Integral Equation
• Augmented electric field integral equation
• Dielectrics
• Conductors

Abstract

This thesis is dedicated to using surface integral equations to solve electro- magnetic problems involved in integrated circuits. Since normally the sizes of the devices in this application are much smaller than the wavelength of the electromagnetic waves, special considerations are needed because of the low frequency breakdown. The augmented technique, a useful remedy for low frequency breakdown of the electric field integral equation is introduced as the background of this thesis. This augmented electric field integral equation provides a simple solu- tion for broadband electromagnetic simulation of perfect electric conductor structures. This thesis presented here exploits the augmented method for lossless and lossy dielectrics. The use of the conventional Rao-Wilton-Glisson (RWG) basis function as basis and testing functions fails because of the testing issue. Instead, the Buffa-Christiansen (BC) basis function is proposed to overcome this diffi- culty. With the combined use of RWG and BC basis functions, a new formu- lation is developed achieving a good convergence and accuracy. For highly lossy medium, however, a new integration scheme and a simple, efficient strategy with a fast algorithm is adopted. After these treatments, the skin depth of current in the conductive medium can be accurately captured down to very low frequency.

Graduation Semester

2014-12

Permalink

http://hdl.handle.net/2142/72907

Copyright and License Information

Copyright 2014 Tian Xia

Owning Collections