Report on Properties of Dielectric Materials at High Frequencies
Abstract
A means of quantitatively measuring the dielectric properties of radio frequency insulating materials at high frequencies is described herein. Tests were conducting over a frequency range from 15 to 60 megacycles, with fairly large radio frequency electric fields being applied to the materials. Dielectric power loss is determined by means of the quantity of heat produced within the material when an electric field of known magnitude is applied. This investigation has shown that, in general, the dielectric constant, power factor and loss factor are not functions of frequency, although there are exceptions to this rule. Usually the power loss per unit volume, with a given field intensity, is proportional to the frequency. It has also been shown that the existing Navy specifications for ceramic radio frequency insulation are adequate for the purpose at the present time, if supplement by a high frequency endurance test. A suitable qualification test in this respect has been recommended.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1936
- Accession Number
- AD1150888
Entities
People
- J. D. Wallace
Organizations
- United States Naval Research Laboratory