Title :
Radiation characteristics of a dielectric disk-loaded circular cylindrical waveguide
Author_Institution :
Dept. of Electr. Eng., Lowell Univ., MA, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
The radiation pattern of a circular cylindrical waveguide that is loaded inside with periodically spaced dielectric disks is derived by considering the region between two disks as a medium with anisotropic permittivity and using Schelkunoff´s equivalence principle. The far-field electric field components and their relationship to cross-polarization ratio are determined. The variation of the latter quantity with the size, spacing, and dielectric constant of the dielectric disks is studied
Keywords :
antenna feeders; antenna radiation patterns; circular waveguides; dielectric-loaded antennas; dielectric-loaded waveguides; waveguide antennas; Schelkunoff´s equivalence principle; anisotropic permittivity; boundary value problem; circular cylindrical waveguide; cross-polarization ratio; dielectric constant; dielectric disc loaded waveguide; far-field electric field components; radiation pattern; waveguide antenna; waveguide feed; Antenna arrays; Antennas and propagation; Dielectrics; Dipole antennas; Electromagnetic waveguides; Geometry; Loaded antennas; Log periodic antennas; Polarization; Wire;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
