• An active receiving antenna for borehole pulsed radar applications 

      Van Wyk, M. D. (Stellenbosch : University of Stellenbosch, 2002-12)
      An efficient radiating strucllire was needed for borehole pulsed radar applications in the 10-100 MHz frequency band. Both resistively loaded and insulated wire antennas were investigated and an active antenna is proposed ...
    • The design and analysis of a rotman lens with reduced conjugate-port coupling 

      Ibbotson, Alex (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: This project comprises the design, analysis, and construction of a Rotman lens with reduced conjugate-port coupling. The Rotman lens is a beam-forming network, used in wide-angle scanners to feed an ...
    • The design of an FM-CW proximity radar 

      Kellerman, Robert A. (Stellenbosch : Stellenbosch University, 2004-04)
      ENGLISH ABSTRACT: The development of a small, cost effective short range FM-CW radar as well as the design and optimization of a double helix antenna is discussed. The FM-CW radar operates at Sband (2450 - 2550 MHz) and ...
    • Development of a cavity backed bowtie antenna with dielectric matching for ground penetrating radar 

      Birch, Max (Max Lariviere) (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: An antenna for ground level deployed Ground Penetrating Radar applications is presented. The antenna is matched to the ground via a low impedance dielectric matching section improving the radiation ...
    • Investigation and design of a slotted waveguide antenna with low 3D sidelobes 

      Maritz, Andries Johannes Nicolaas (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: An investigation into the cause of undesired sidelobes in the 3D radiation pattern of slotted waveguide arrays is conducted. It is hypothesized that the cross-polarization of the antenna is at fault, ...
    • Modelling of a monostatic borehole radar antenna 

      Gouws, Marcel (Stellenbosch : University of Stellenbosch, 2006-03)
      The successful operation of a pulsed monostatic borehole radar system requires that cur- rent on the antenna due to transmitter pulses subsides quickly. Deterioration of the radar antenna feed-point current settling times ...