CW and pulsed mode transfer impedance measurements in coaxial cables

Author

Goldstein, C. ; Mani, P.

Author_Institution

NC Lab., Spiez, Switzerland

Volume

34

Issue

1

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

50

Lastpage

57

Abstract

Transfer impedance measurements have been performed both in frequency and time domains. CW measurements were performed using a matched triaxial system, a quintaxial system, and stripline injection. For nuclear electromagnetic pulse (NEMP) purposes, measurements up to a maximum frequency of 200 MHz are sufficient. For this frequency range the matched triaxial system was found to be the most convenient. Amplitude and phase measurements in different cables are discussed. Direct and indirect injection was employed in the time domain measurements. A delayed coupling is demonstrated when the diffusion term is dominant in the transfer impedance. In a magnetically shielded cable, hysteresis and saturation effects have been observed. At 5 kA the transfer impedance of the magnetically shielded cable increased by an order of magnitude due to saturation

Keywords

coaxial cables; electric impedance measurement; electromagnetic pulse; nuclear explosions; 200 MHz; 5 kA; CW measurements; NEMP; coaxial cables; delayed coupling; diffusion term; frequency domain; hysteresis; magnetically shielded cable; matched triaxial system; nuclear electromagnetic pulse; phase measurements; quintaxial system; saturation effects; stripline injection; time domain; transfer impedance measurements; Cable shielding; Coaxial components; Electromagnetic measurements; Frequency; Impedance measurement; Magnetic domains; Magnetic shielding; Performance evaluation; Pulse measurements; Saturation magnetization;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.121667

Filename

121667