Title :
The design of the MeerKAT L-band feed
Author :
Lehmensiek, R. ; Theron, I.P.
Author_Institution :
EMSS Antennas (Pty) Ltd., Stellenbosch, South Africa
Abstract :
The design methodology of the MeerKAT L-band feed which consists of a wide flare angle axially corrugated conical horn, a horn matching section and a compact orthomode transducer (OMT) is presented. The dish is a classical Gregorian offset dual-reflector antenna system. The predicted results show stable radiation patterns over the frequency band with an ideal antenna efficiency above 73 %. The feed has losses below 0.05 dB resulting in very good system sensitivity.
Keywords :
antenna feeds; antenna radiation patterns; conical antennas; horn antennas; reflector antennas; MeerKAT L-band feed; OMT; classical Gregorian offset dual-reflector antenna system; compact orthomode transducer; design methodology; frequency band; horn matching section; ideal antenna efficiency; stable radiation patterns; system sensitivity; wide flare angle axially corrugated conical horn; Conductors; Feeds; Impedance matching; Optimization; Power transmission lines; Transducers; Wires;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2012 International Conference on
Conference_Location :
Cape Town
Print_ISBN :
978-1-4673-0333-0
DOI :
10.1109/ICEAA.2012.6328642
