Title :
Some reflector and feed antenna inventions that made a difference: Fundamentals and examples from radio telescopes, satellite communications and radio links
Author :
Kildal, Per-Simon
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
The paper will review some inventions within reflector antennas and feeds that represented a large step forward when they were introduced, in terms of both performance and industrial or scientific usefulness. The fundamental design principles as well as the actual solutions will be overviewed in a simple manner. The overview covers dipole-disk with ring for ship Earth stations, corrugated horns, hat-fed antennas for radio links, and wideband log-periodic “eleven” feed for SKA and VLBI 2010 radio telescopes. The inventions can in all cases be associated with simple fundamental EM principles, and an improvement of a fundamental subefficiency.
Keywords :
broadband antennas; dipole antennas; horn antennas; log periodic antennas; radio links; radiotelescopes; reflector antenna feeds; satellite antennas; EM principles; SKA; VLBI 2010 radio telescopes; corrugated horn antenna; dipole-disk ring antenna; feed antenna inventions; hat-fed antennas; radio links; radio telescopes; reflector antenna inventions; satellite communications; ship Earth stations; wideband log-periodic eleven feed antenna; Antenna feeds; Bandwidth; Dipole antennas; Horn antennas; Radio astronomy; Reflector antennas; feeds; radio telescopes; reflectors antennas;
Conference_Titel :
AFRICON, 2013
Conference_Location :
Pointe-Aux-Piments
Print_ISBN :
978-1-4673-5940-5
DOI :
10.1109/AFRCON.2013.6757834
