Title :
Compact duplexer-polarizer with semicircular waveguide [antenna feed]
Author :
Behe, Roger ; Brachat, Patrice
Author_Institution :
CNET, Cap d´´Ail, France
fDate :
8/1/1991 12:00:00 AM
Abstract :
A light, compact, and high-performance duplexer-polarizer able to generate circularly polarized waves in a circular waveguide is discussed. Two prototypes were built. The standing-wave-ratio (SWR) and ellipticity performances are extremely good (less than 0.15 dB ellipticity over 15% bandwidth). The experimental development was facilitated by the computation of the dispersion curves and of the transverse field distribution associated with the two fundamental guided modes propagating in the different sections of a septum waveguide
Keywords :
antenna feeders; circular waveguides; electromagnetic wave polarisation; waveguide components; antenna feed; circular waveguide; circularly polarized waves; dispersion curves; duplexer-polarizer; ellipticity; semicircular waveguide; septum waveguide; standing-wave-ratio; transverse field distribution; Antenna feeds; Circuits; Coaxial components; Eigenvalues and eigenfunctions; Optical polarization; Probes; Space technology; Tellurium; Transducers; Waveguide transitions;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
