• Tunable narrow-band X-band bandpass filters 

      Meyer, Elmine (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: This dissertation proposes two narrow-band tunable X-band filters from different classes, one planar and one waveguide. The first is a suspended substrate varactor-tuned doubly end-loaded staircase filter ...
    • Magnetic modelling, analysis and on-chip shielding of SFQ Circuits 

      Bakolo, Simeon Rodwell (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: Single Flux Quantum (SFQ) based electronic circuits are susceptible to failure if exposed to external magnetic fields, even in very small quantities. Operating margins of SFQ circuits have shown to decrease ...
    • Fast multi-core CEM solvers and flux trapping analysis for superconducting structures 

      Jackman, Kyle (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: The dissertation presents the development of a numerical field solver, called TetraHenry (TTH), for inductance extraction and flux trapping analysis of superconducting integrated circuits. The solver ...
    • A digital low-level radio frequency control system for the particle accelerators at iThemba LABS 

      Duckitt, William (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: This dissertation presents the design, implementation and evaluation of a digital low-level radio frequency (RF) control system for the cyclotron particle accelerators at iThemba LABS. This system replaces ...