Accession Number : AD0282354

Title :   TWO-CONDUCTOR LOW-PASS TRANSMISSION LINE THEORY

Corporate Author : IIT RESEARCH INST CHICAGO ILL

Personal Author(s) : TOBIN,H.G.

Report Date : 25 JUN 1962

Pagination or Media Count : 1

Abstract : Transmission lines which utilize a disperse dielectric were fabricated as experimental, laboratory models and the attenuation of these lines measured. Indications are that certain of the dielectrics used have a resistivity which is a strong function of frequency. Measurements were also made upon ferrite rods for use in the transmission lines which indicate that these rods also have a frequency dependence. The attenuation of the samples tested exhibited a similar behavior to the lines incorporating the disperse dielectric. Incomplete analyses were made of lines which incorporate periodic lump-loading and upon lines which have a center conductor which is helically wound. Of concern in this latter case was the effect of the interturn capacitance upon the high frequency behavior of the line. Preliminary indications are that this capacitance will not cause any deleterious resonance effects until frequencies high enough such that the line model considered is probably no longer valid. The complexity of the expression for the attenuation for both of these lines will probably eliminate any hope of obtaining a theoretical design optimum. (Author)

Descriptors :   *TRANSMISSION LINES, COAXIAL CABLES, FERRITES, LOW PASS FILTERS, POLYMERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE