Title :
Dual band coaxial feedhorn design
Author_Institution :
Prodelin Corp., Conover, NC, USA
Abstract :
A dual band coaxial feedhorn was investigated for use in a deep-dish paraboloidal reflector antenna. The radiation patterns were measured and compared with computed results at the mid frequencies, 3.95 GHz and 11.95 GHz, of two different bands. The test results confirm that the dual band coaxial feedhorn with a coaxial cavity has the broad beam radiation patterns which are required for deep-dish paraboloidal reflector antennas. The ripples existing in the upper-band radiation pattern are caused by the coaxial waveguide which surrounds the inner circular waveguide.<>
Keywords :
antenna feeders; directive antennas; electric field measurement; magnetic field measurement; microwave measurement; reflector antennas; waveguide antennas; 11.95 GHz; 3.95 GHz; SHF; circular waveguide; coaxial cavity; coaxial waveguide; deep dish reflector antenna; design; dual band coaxial feedhorn; measurement; paraboloidal reflector antenna; radiation patterns; Antenna feeds; Antenna radiation patterns; Apertures; Coaxial components; Conductors; Dual band; Frequency; Hollow waveguides; Mutual coupling; Reflector antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115266
