Browsing Engineering, Built Environment and Information Technology by Author "Jacobs, Ockert Botha"

Browsing Engineering, Built Environment and Information Technology by Author "Jacobs, Ockert Botha"

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  • Analysis and design of a wide band omnidirectional antenna 
    Jacobs, Ockert Botha; Odendaal, J.W. (Johann Wilhelm); Joubert, Johan (Wiley, 2011-06)
    The analysis and design of an omni-directional antenna that functions over a very broad frequency band is presented. Design guidelines for this antenna have been derived using electromagnetic analysis software. ...
  • Elliptically shaped quad-ridge horn antennas as feed for a reflector 
    Jacobs, Ockert Botha; Odendaal, J.W. (Johann Wilhelm); Joubert, Johan (Institute of Electrical and Electronics Engineers, 2011)
    Quad-ridge horn antennas of various geometries are considered as possible candidates for a wideband reflector antenna feed. It is demonstrated that shaping the sidewalls of the ridge horns significantly improves the ...
  • Quad-ridge horn antenna with elliptically shaped sidewalls 
    Jacobs, Ockert Botha; Odendaal, J.W. (Johann Wilhelm); Joubert, Johan (Institute of Electrical and Electronics Engineers, 2013)
    We present a quad-ridge horn antenna as a feed for a reflector antenna for use in radio astronomy applications. The antenna uses elliptically shaped sidewalls to limit the variation of beamwidth over a wide frequency ...
  • Quad-ridge horn antenna with elliptically shaped sidewalls for use as a reflector feed for radio astronomy 
    Jacobs, Ockert Botha (University of Pretoria, 2012-08-14)
    Reflector antennas used for radio astronomy require feeds that use the reflector surface as efficiently as possible while maintaining low noise levels. The specifications of new radio astronomy telescopes under development ...