Title :
S/X band feed development for 12m Cassegrain antenna
Author :
Kim, Chang S. ; Moldovan, Nick ; Hanchett, Nile
Abstract :
This paper describes the development of a dual frequency, circular polarized feed which operates over the S/X frequency bands. The feed is incorporated into a 12 meter Cassagrain reflector system for use in radio astronomy applications. The selected design consists of two separate feeds assembled in a coaxial configuration. The inner circular waveguide is used for X-band and the outer coaxial circular waveguide is used for S-band. The X-band feed consists of a dielectric horn, dual-ridge circular polarizer and orthomode transducer. The S-band feed consists of a conical corrugated horn, dielectric polarizer, and probe coupling.
Keywords :
coaxial waveguides; multifrequency antennas; radioastronomy; reflector antenna feeds; waveguide antennas; Cassagrain reflector system; Cassegrain antenna; S-X band feed development; circular polarized feed; coaxial configuration; dual frequency operation; radio astronomy application; Antenna feeds; Apertures; Coaxial components; Dielectrics; Pins; Polarization; Probes; Radio astronomy; Radio frequency; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5172246
