Title :
The Use of a Dielectric Lens to Improve the Efficiency of a Dual-Polarized Quad-Ridge Horn From 5 to 15 GHz
Author :
Bauerle, Robert J. ; Schrimpf, Robert ; Gyorko, Eric ; Henderson, John
Author_Institution :
Gov. Commun. Syst. Div., Harris Corp., Palm Bay, FL
fDate :
6/1/2009 12:00:00 AM
Abstract :
This work presents the design and simulation of a 5-15 GHz quad-ridge horn with a coaxial to quad-ridge waveguide transition at the feed. A dielectric lens was added to improve the efficiency to nearly 70% over the band. The dielectric lens removes phase errors that exist at the aperture and improves the antenna aperture efficiency. Very good agreement was obtained between simulations and measurements of S11, port to port isolation, gain patterns, and efficiency.
Keywords :
antenna feeds; antenna radiation patterns; aperture antennas; coaxial waveguides; dielectric bodies; electromagnetic wave polarisation; finite element analysis; horn antennas; lens antennas; ridge waveguides; antenna aperture; antenna radiation pattern; coaxial feed; dielectric lens; dual-polarized quadridge horn antenna; finite element method; frequency 5 GHz to 15 GHz; waveguide transition; Apertures; Bandwidth; Dielectric materials; Dielectric measurements; Feeds; Horn antennas; Lenses; Optical design; Polarization; Waveguide transitions; Coaxial feed; dielectric lens; dual polarization; finite element method; quad-ridge horn antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2019929
