Title :
Anomalous dispersion in the dielectric spectra of conductive materials
Author :
Schultz, John W.
Author_Institution :
Res. Inst., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
A high-frequency impedance analyzer is used to study the dielectric permittivity of a conductor-filled composite. An anomalous dielectric dispersion is observed at high frequencies. Comparison to dielectric probe measurements indicates that this dispersion is not reproducible with other measurement techniques and may be a result of instrumental artifacts. Theoretical circuit models show that this dispersion is most likely caused by finite inductances and resistances that exist in the electrode fixture
Keywords :
conducting materials; filled polymers; microwave measurement; permittivity measurement; anomalous dispersion; circuit model; conductive material; conductor-filled composite; dielectric spectra; impedance analyzer; instrumental artifact; measurement technique; permittivity; Circuits; Dielectric measurements; Dispersion; Electrical resistance measurement; Frequency; Impedance; Instruments; Measurement techniques; Permittivity measurement; Probes;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
