Title :
Coaxial ridge waveguide for wide band horns
Author :
Hizal, Altunkan ; Kazak, U.
Author_Institution :
Dept. of Electr. & Electron. Eng., Middle East Tech. Univ., Ankara, Turkey
Abstract :
The TE modes are analyzed using the transverse resonance method and the wave propagation in a curved structure. The cutoff frequencies for TE/sub 11/ and TE/sub 31/ modes and the infinite frequency characteristic impedance Z/sub 0 infinity / for TE/sub 11/ mode are obtained. The curves behave similarly to those for a rectangular ridge waveguide. The characteristic impedance is almost half the value for a rectangular ridge waveguide of width pi R. This is due to the doubling of the volume. The bandwidth increases considerably over an unridged coaxial waveguide.<>
Keywords :
antenna feeders; circular waveguides; waveguide components; waveguide theory; TE modes; coaxial ridge waveguide; cutoff frequencies; infinite frequency characteristic impedance; transverse resonance method; wave propagation; wide band horns; Bandwidth; Coaxial components; Equations; Feeds; Horn antennas; Magnetic analysis; Microwave antennas; Rectangular waveguides; Reflector antennas; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94335
