Title :
The theory of chirowaveguides
Author :
Pelet, Philippe ; Engheta, Nader
Author_Institution :
Dept. of Electr. Eng., Pennsylvania Univ., Philadelphia, PA, USA
fDate :
1/1/1990 12:00:00 AM
Abstract :
The theory of chirowaveguides is discussed, and their salient features are analyzed. It is shown that the Helmholtz equations for the longitudinal components of electric and magnetic fields in chirowaveguides are always coupled and that, consequently, in these waveguides individual transverse electric (TE), transverse magnetic (TM), or transverse electromagnetic (TEM) modes cannot be supported. As an illustrative example, the parallel-plate chirowaveguide is analyzed in detail and the corresponding dispersion relations, cutoff frequencies, and propagating and evanescent modes are obtained. In the dispersion (Brillouin) diagram for a chirowaveguide, three regions are identified: the fast-fast-wave region, the fast-slow-wave region and the slow-slow-wave region. For each of these regions, the electromagnetic field components in a parallel-plate chirowaveguide are analyzed and the electric field components are plotted. Potential applications of chirowaveguides in integrated optical devices, communications systems, and printed circuit antennas are mentioned
Keywords :
waveguide theory; Helmholtz equations; chirality; chirowaveguides; communications systems; cutoff frequencies; dispersion relations; electric fields; electromagnetic field components; evanescent modes; fast-fast-wave region; fast-slow-wave region; integrated optical devices; magnetic fields; parallel plate waveguide; printed circuit antennas; propagating modes; slow-slow-wave region; Electromagnetic coupling; Electromagnetic fields; Electromagnetic scattering; Electromagnetic waveguides; Equations; Magnetic analysis; Magnetic fields; Optical waveguides; Tellurium; Waveguide components;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
