Title :
Axial ratio improvement in aperture antennas using high-impedance ground plane
Author :
Sievenpiper, D. ; Schaffner, J. ; Navarro, J.
Author_Institution :
Hughes Res. Labs., Malibu, CA, USA
fDate :
11/7/2002 12:00:00 AM
Abstract :
High-impedance surfaces are studied as a means of improving the radiation pattern symmetry in aperture antennas. Compared to a solid metal ground plane, the results suggest that high-impedance surfaces can significantly improve the axial ratio of circularly polarised antennas. This can be used to reduce interference between left and right polarisation components.
Keywords :
antenna earths; antenna radiation patterns; aperture antennas; electromagnetic wave polarisation; interference suppression; waveguide antenna arrays; waveguide antennas; Ku-band rectangular waveguide; aperture antennas; axial ratio improvement; circularly polarised antennas; high-impedance ground plane; high-impedance surfaces; interference reduction; left polarisation components; radiation pattern symmetry; right polarisation components; solid metal ground plane;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020984
