Browsing Engineering, Built Environment and Information Technology by UP Author "Ferreira, Riaan"

Browsing Engineering, Built Environment and Information Technology by UP Author "Ferreira, Riaan"

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  • A broadband 180° hybrid ring coupler using a microstrip-to-slotline inverter 
    Ferreira, Riaan; Joubert, Johan (Wiley, 2015-09)
    A new broadband 180° hybrid ring coupler with a Chebyshev return loss response, implemented in microstrip line, and a phase inverter using microstripto- slotline transitions, is presented. The transitions were constructed ...
  • A compact dual-circularly polarized cavity-backed ring-slot antenna 
    Ferreira, Riaan; Joubert, Johan; Odendaal, J.W. (Johann Wilhelm) (Institute of Electrical and Electronics Engineers, 2017-01)
    A low profile dual-circularly polarized printed ring-slot antenna with a small footprint, which radiates above an open cavity loaded with an artificial magnetic conducting reflector, is presented. The feed network ...