Analysis of slot-eavesdrop of coaxial cable with FDTD method

Author

Hongxin, Zhang ; Yinghua, Lu ; Huang Yongining ; Xueping, Yu

fYear

2002

fDate

21-24 May 2002

Firstpage

264

Lastpage

267

Abstract

In this paper, the perfectly matched layer (PML) absorbing boundary condition is applied to a general finite-difference time-domain (FDTD) in a 3D cylindrical coordinates system. We deduce the difference formulation both in free space and the PML field, and the axial singularities are removed by using Ampere´s law. With this method, the characteristics of a coaxial cable slot-eavesdrop are discussed. In the simulation, the singularities near the metal edge are removed using the Fourier-Bessel expansion. It shows that research of electromagnetic eavesdropping in coaxial cable interfaces in the electromagnetic compatibility field is needed.

Keywords

coaxial cables; electromagnetic compatibility; finite difference time-domain analysis; security of data; 3D cylindrical coordinates systems; Ampere law; EMC; FDTD methods; Fourier-Bessel expansion; PML; absorbing boundary conditions; axial singularity removal; coaxial cable interfaces; coaxial cable slot-eavesdrop; electromagnetic compatibility; electromagnetic eavesdropping; finite-difference time-domain analysis; free space difference formulation; metal edge singularities; perfectly matched layers; Coaxial cables; Conductivity; Difference equations; Electromagnetic fields; Finite difference methods; Maxwell equations; Permittivity; Reflection; Stability; Tensile stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2002 3rd International Symposium on

Print_ISBN

0-7803-7277-8

Type

conf

DOI

10.1109/ELMAGC.2002.1177421

Filename

1177421