Bridge Method for Microwave Dielectric Measurements
- 1 November 1958
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 29 (11), 1016-1019
- https://doi.org/10.1063/1.1716043
Abstract
A method for measuring complex dielectric constants of liquids is described. It involves the variation of the length of a short-circuited section of transmission line until its input admittance is solely resistive. A novel microwave bridge indicates when this condition is fulfilled and simultaneously measures the admittance. From a knowledge of this admittance and the length of the dielectric-filled section the complex dielectric constant may be readily calculated. Measurements at 1 and 3 kMc with several liquids of diverse dielectric character are in satisfactory agreement with values reported elsewhere.Keywords
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