The Application of a System of Fixed-rotating Vectors to Circuit Analysis and Synthesis

The Application of a System of Fixed-rotating Vectors to Circuit Analysis and Synthesis
Author: Carl T. Case
Publisher:
Total Pages: 22
Release: 1965
Genre: Dielectrics
ISBN:
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A system of fixed-rotating vectors can be used to study the impedance loci of functions of the first Foster form and of systems including negative impedance converters. Of particular interest in the field of dielectrics and biological membrane studies is a parallel RC network, where the dielectric of the capacitor is given by the Debye dispersion relations. Such a network also falls into the category of the first Foster form.

The Theoretical and Numerical Determination of the Radar Cross Section of a Finite Cone

The Theoretical and Numerical Determination of the Radar Cross Section of a Finite Cone
Author: F. V. Schultz
Publisher:
Total Pages: 14
Release: 1965
Genre: Boundary value problems
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In this work, rigorous electromagnetic theory is used to determine the nose-on radar cross section of a perfectly conducting cone of finite height. The end cap of the cone is assumed to be a segment of a s spherical surface with center at the apex of the cone. Numerical results have been obtained for a cone having a total apex angle of 30 degrees and for values of [kappa alpha] ranging from 0.0259 to 5.18, where [kappa]=2 [pi]/[lambda] and [alpha] is the radius of the base of the cone. Siegel's Rayleigh method and by using Keller's modified geometrical optics as well as with experimental results obtained by Keys. The comparisons are instructive below [kappa alpha] = 3.2, the apparent upper limit of validity of the present results -- p.[3].

Magneto-ionic Coupling in an Inhomogeneous Medium

Magneto-ionic Coupling in an Inhomogeneous Medium
Author: Yūji Inoue
Publisher:
Total Pages: 46
Release: 1965
Genre: Atmospheric models
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The propagation of electromagnetic waves in a horizontally stratified layer of gyrotropic medium is discussed. Derivation of a comprehensive representation for magneto-ionic coupling coefficients allows interpretation of the physical significance of the coupling. Introduction of an invariant quantity for an inhomogeneous medium becomes an important guide for numerical solutions of the wave equation. Numerical results of magneto-ionic coupling coefficients are presented. Based on region properties, characteristic wave types are defined: for the isotropic region, linearly polarized waves are used; for the anisotropic region, elliptically polarized waves generally are applied. (Author).

Microwave Dielectric Resonators

Microwave Dielectric Resonators
Author: Sally J. Nauman
Publisher:
Total Pages: 162
Release: 1965
Genre: Dielectric resonators
ISBN:
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The resonant frequencies for the fundamental modes in circular cylindrical and rectangular parallelopiped high dielectric resonators have been calculated by computer for a range of values of physical dimensions and relative dielectric constant. The frequency range extends from zero to 50,000 Mc/sec, the relative dielectric constant from 50 to 1800, and physical dimensions from zero to 500 mils. Results are presented in tabular and graphical form with frequency plotted versus resonator length for parametric values of relative dielectric constant and cross sectional dimensions. A brief review of earlier work with high dielectric resonators is included. Expressions for the resonant frequency and fundamental mode field configurations are given. (Author).