Accession Number:

ADA243236

Title:

Permittivity Probe Modelling

Descriptive Note:

Final technical rept. Sep 1989-Jul 1990,

Corporate Author:

KING'S COLL LONDON (UNITED KINGDOM) DEPT OF PHYSICS

Personal Author(s):

Report Date:

1991-11-01

Pagination or Media Count:

41.0

Abstract:

An HP 8720 automatic network analyser has been used with a custom made coaxial probe to measure the complex permittivity of standard limits in the frequency range 130 MHz to 20 GHz. Three equivalent circuit models were used to simulate the admittance of the probe sample interface. The expediency and limitations of these models have been studied. A critical review of these simulations is presented and illustrated by experimental evidence. Measurements were performed on high and low loss materials to test the power and versatility of the adopted technique. Its accuracy and reproducibility compare favourably with the well established, in-guide, techniques. This technique is well suited for applications in the fields of biomedicine, material studies and industrial development and control.

Subject Categories:

  • Physical Chemistry
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE