Wave-guide Of General Cross-section Research Articles

Transient electromagnetic wave propagation in waveguides

This paper focuses on propagation of transient electromagnetic waves in waveguides of general cross section with perfectly conducting walls. The solution of the transient wave propagation problem relies on a wave splitting technique, which has been frequently used in direct and inverse scattering problems during the last decade. The field in the waveguide is represented as a time convolution of a Green function and the excitation. Some numerical computations illustrate the method. A new way of calculating the first precursor in a Lorentz medium is presented. This method, which is not based upon the classical asymptotic methods, gives an expression of the first precursor at all depths in the medium. The excitation of the waveguide modes for time dependent sources is also addressed.

The radiation of polarized matter in a wave-guide of general cross-section with many dielectrics II

The radiation of polarized matter in a wave-guide of general cross-section with many dielectrics II

The radiation of polarized matter in a wave-guide of general cross-section with many dielectrics I

In this first part a straight general wave-guide with a perfectly conducting outer wall and several dielectrics, excited by an electrically generally polarized matter is considered and the electromagnetic field is determined.

Some static problems in a wave-guide of general cross-section

Some static problems in a wave-guide of general cross-section

Some static problems in a wave-guide of general cross-section

Some static problems in a wave-guide of general cross-section

Some static problems in a wave-guide of general cross-section

The electrostatic field created by electrically polarized matter of arbitrary shape placed in a direct wave-guide of general cross-section is derived by means of the electrostatic potential. Green's function method is used.

The radiation of polarized matter in a wave-guide of general cross-section with two dielectrics Part Two

The radiation of polarized matter in a wave-guide of general cross-section with two dielectrics Part Two

The radiation of polarized matter in a wave-guide of general cross-section with two dielectrics part one

In this first part the physical formulation of the problem is given, known results needed for the solution are reminded, and mathematical tools are prepared. Expressions for the electro magnetic field are obtained.

The radiation of polarized matter in a wave-guide of general cross-section

The paper derives the field created by electrically and/or magnetically polarized matter of arbitrary shape placed in a direct wave-guide of arbitrary, simply continuous cross-section by using the method of Green's functions. Expressions are also found for the field energy.

The radiation of polarized matter in a coaxial wave-guide of general cross-section

The radiation of polarized matter in a coaxial wave-guide of general cross-section

Surface-wave radiation loss from curved dielectric slabs and fibers

A newly developed systematic procedure to calculate the real and imaginary parts of the change in propagation constant of a surface-wave mode on a curved open waveguide of general cross section is used here to determine these quantifies for the TE modes of an asymmetric slab waveguide and for all the modes of an optical fiber. Comparison of these results with the existing literature points up the care which must be taken in making approximations in this problem, since errors of significant factors in the radiation loss have been made in previous work.

A Decoupled Formulation of the Vector Wave Equation in Orthogonal Curvilinear Coordinates, with Application to Ferrite-Filled and Curved Waveguides of General Cross Section

The introduction of a double complex-number system and the combining of the transverse field components into a compact composite structure enable the wave equation to be expressed in a form in which certain mathematical combinations of field components appear as entities completely decoupled from each other. Hence the equations can be solved for these combinations and ultimately for the components themselves. The method appears limited to guides of constant cross section and of either 1) isotropic medium and curved axis, or 2) axially anisotropic nonreciprocal medium and straight axis.