Title :
A simple circular-polarized antenna: circular waveguide horn coated with lossy magnetic material
Author :
Lee, Choon S. ; Lee, Shung-wu ; Justice, D.W.
Author_Institution :
Hughes Aircraft Co., Los Angeles, CA, USA
fDate :
2/1/1988 12:00:00 AM
Abstract :
It is shown that a circular waveguide horn coated with a lossy material in its interior wall can be used as an alternative to a corrugated waveguide for radiating a circularly polarized (CP) field. To achieve good CP radiation, the diameter of the structure must be larger than the free-space wavelength, and the coating material must be sufficiently lossy and magnetic. The device is cheaper and lighter in weight than the corrugated one
Keywords :
antenna feeders; antennas; circular waveguides; electromagnetic wave polarisation; magnetic leakage; waveguide theory; circular waveguide horn; circular-polarized antenna; coating material; lossy magnetic material; Antenna radiation patterns; Bandwidth; Boundary conditions; Coatings; Dielectrics; Electromagnetic waveguides; Horn antennas; Magnetic losses; Magnetic materials; Optical polarization;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
