Publications

Below is a list of publications from research funded by the chair since 2011.

Journal articles:

  1. (in press) A. Cuyt, R. Louw, C. Segers and D.I.L. de Villiers, “Rapid design of wideband unidirectional sinuous antennas through blended rational interpolation”, Wiley International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2018;e2458. https://doi.org/10.1002/jnm.2458.
  2. (in press) T. J. Phiri, D. B. Davidson and P. G. Wiid, “A Deterministic Propagation Model for Multipath Analysis at SKA Precursor Telescopes; A Case Study on MeerKAT,” in IEEE Transactions on Antennas and Propagation. doi: 10.1109/TAP.2018.2804621
  3. R. Lehmensiek, D. I. L. de Villiers, “Noise Temperature Approximations for Offset Gregorian Reflector Systems”, IEICE Transactions on Communications, 2018, Volume E101.B, Issue 2, pp. 332-339. https://doi.org/10.1587/transcom.2017ISP0010
  4. D. I. L. de Villiers, R. Lehmensiek, M. V. Ivashina, “Effects of Diffraction and Feed Pattern Variation in Shaped Offset Gregorian Reflectors,” IEICE Transactions on Communications, 2018, Volume E101.B, Issue 2, pp. 316-323. https://doi.org/10.1587/transcom.2017ISP0006,
  5. D. I. L. de Villiers and S. M. Koziel, “Fast multi-objective optimisation of pencil beam reflector antenna radiation pattern responses using Kriging,” in IET Microwaves, Antennas & Propagation, vol. 12, no. 1, pp. 120-126, 10 1 2018. doi: 10.1049/iet-map.2017.0090
  6. N. Mutonkole and D. I. L. de Villiers, “Multivariate Adaptive Sampling of Parameterized Antenna Responses,” in IEEE Transactions on Antennas and Propagation, vol. 65, no. 3, pp. 1073-1080, March 2017. doi: 10.1109/TAP.2017.2653761
  7. D. J. Ludick, M. M. Botha, R. Maaskant and D. B. Davidson, “The CBFM-Enhanced Jacobi Method for Efficient Finite Antenna Array Analysis,” in IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 2700-2703, 2017. doi: 10.1109/LAWP.2017.2742059
  8. D. I. L. de Villiers, “Fast Parametric Modeling of Radio Astronomy Reflector Antenna Noise Temperature,” in IEEE Transactions on Antennas and Propagation, vol. 64, no. 6, pp. 2522-2526, June 2016. doi: 10.1109/TAP.2016.2543801
  9. D. S. Prinsloo and P. Meyer, “Multi-mode noise parameters for multi-port networks,” in IET Microwaves, Antennas & Propagation, vol. 10, no. 3, pp. 333-338, 19 2 2016. doi: 10.1049/iet-map.2015.0458
  10. T. S. Beukman, P. Meyer, M. V. Ivashina and R. Maaskant, “Modal-Based Design of a Wideband Quadruple-Ridged Flared Horn Antenna,” in IEEE Transactions on Antennas and Propagation, vol. 64, no. 5, pp. 1615-1626, May 2016. doi: 10.1109/TAP.2016.2537363
  11. N. Mutonkole, E. R. Samuel, D. I. L. de Villiers and T. Dhaene, “Parametric Modeling of Radiation Patterns and Scattering Parameters of Antennas,” in IEEE Transactions on Antennas and Propagation, vol. 64, no. 3, pp. 1023-1031, March 2016. doi: 10.1109/TAP.2016.2521883
  12. K. F. Warnick, R. Maaskant, M. V. Ivashina, D. B. Davidson and B. D. Jeffs, “High-Sensitivity Phased Array Receivers for Radio Astronomy,” in Proceedings of the IEEE, vol. 104, no. 3, pp. 607-622, March 2016. doi: 10.1109/JPROC.2015.2491886
  13. D. M. P. Smith, D. B. Davidson, A. Bester and J. Andriambeloson, “Modernising, Upgrading and Recommissioning the Indoor Antenna Range at Stellenbosch University”, Africa Research Journal, vol. 107, no. 1, pp. 4-16, March 2016.
  14. R. Lehmensiek, I. P. Theron and D. I. L. de Villiers, “Deriving an Optimum Mapping Function for the SKA-Shaped Offset Gregorian Reflectors,” in IEEE Transactions on Antennas and Propagation, vol. 63, no. 11, pp. 4658-4666, Nov. 2015. doi: 10.1109/TAP.2015.2477408
  15. P. Meyer and D. S. Prinsloo, “Generalized Multimode Scattering Parameter and Antenna Far-Field Conversions,” in IEEE Transactions on Antennas and Propagation, vol. 63, no. 11, pp. 4818-4826, Nov. 2015. doi: 10.1109/TAP.2015.2475642
  16. R. G. Ilgner and D. B. Davidson, “The Computational Performance and Power Consumption of the Parallel FDTD on a Smartphone Platform”, ACES Journal, vol. 30, no. 12, pp. 1262-1268, December 2015.
  17. J. Gilmore and D. B. Davidson, “Suppressing Undesired Common-Mode Resonances in Connected Antenna Arrays,” in IEEE Transactions on Antennas and Propagation, vol. 63, no. 11, pp. 5245-5250, Nov. 2015. doi: 10.1109/TAP.2015.2478141
  18. A. Young, S. J. Wijnholds, T. Carozzi, R. Maaskant, M. V. Ivashina and D. B. Davidson, “Efficient correction for baseline-dependent direction-dependent effects in synthesis imaging: An A-stacking framework”, Astronomy and Astrophysics, vol. 577, p. A56, 2015. [Online]. Available: http://dx.doi.org/10.1051/0004- 6361/201425492.
  19. R. Lehmensiek and D. I. L. de Villiers, “Constant Radiation Characteristics for Log-Periodic Dipole Array Antennas,” in IEEE Transactions on Antennas and Propagation, vol. 62, no. 5, pp. 2866-2869, May 2014. doi: 10.1109/TAP.2014.2307350
  20. R. Lehmensiek and D. I. L. de Villiers, “On reflector feeds with unidirectional axially symmetric radiation patterns: Their cross-polarization performance and efficiencies,” in IEEE Antennas and Propagation Magazine, vol. 56, no. 1, pp. 39-61, Feb. 2014. doi: 10.1109/MAP.2014.6821759
  21. R. G. Marchand and D. B. Davidson, “Verification of the Method-of-Moment Codes Using the Method of Manufactured Solutions,” in IEEE Transactions on Electromagnetic Compatibility, vol. 56, no. 4, pp. 835-843, Aug. 2014. doi: 10.1109/TEMC.2014.2325826
  22. R. G. Ilgner and D. B.Davidson, “Price-performance aspects of accelerating the FDTD method using the vector processing programming paradigm on GPU and multi- core clusters”, ACES Journal, vol. 29, no. 5, pp. 351-360, May 2014.
  23. A. Young, R. Maaskant, M. V. Ivashina and D. B. Davidson, “Radiation pattern modeling with characteristic basis function patterns”, Forum for Electromagnetic Research Methods and Application Technologies (FERMAT) (open access e-journal), vol. 2, 2014. Available: http://www.e-fermat.org/files/articles/1534d531678eff.pdf
  24. D. J. Ludick, R. Maaskant, D. B. Davidson, U. Jakobus, R. Mittra and D. de Villiers, “Efficient Analysis of Large Aperiodic Antenna Arrays Using the Domain Green’s Function Method,” in IEEE Transactions on Antennas and Propagation, vol. 62, no. 4, pp. 1579-1588, April 2014. doi: 10.1109/TAP.2014.2299826
  25. M. H. Volkmann, A Sahu, C. J. Fourie, O. A. Mukhanov, “Implementation of energy efficient Single Flux Quantum digital circuits with sub-aJ/bit operation”, Superconductor Science & Technology 2013, 26:015002.
  26. M. H. Volkmann, A Sahu, C. J. Fourie, O. A. Mukhanov, “Experimental investigation of energy- efficient digital circuits based on eSFQ logic”, IEEE Transactions on Applied Superconductivity 2013, 23(3):1301505.
  27. C. J. Fourie, M. H. Volkmann, “Status of superconductor electronic circuit design software”, IEEE Transactions on Applied Superconductivity 2013, 23(3):1300205.
  28. D. I. L. de Villiers and R. Lehmensiek, “Modeling of the Radiation Pattern of a Pair of Thin Circular-Arc Dipoles Over an Infinite Ground Plane,” in IEEE Transactions on Antennas and Propagation, vol. 61, no. 8, pp. 4375-4378, Aug. 2013. doi: 10.1109/TAP.2013.2261449
  29. A. Young, M. V. Ivashina, R. Maaskant, O. A. Iupikov and D. B. Davidson, “Improving the Calibration Efficiency of an Array Fed Reflector Antenna Through Constrained Beamforming,” in IEEE Transactions on Antennas and Propagation, vol. 61, no. 7, pp. 3538-3545, July 2013. doi: 10.1109/TAP.2013.2255577
  30. A. Young, R. Maaskant, M. V. Ivashina, D. I. L. de Villiers and D. B. Davidson, “Accurate Beam Prediction Through Characteristic Basis Function Patterns for the MeerKAT/SKA Radio Telescope Antenna,” in IEEE Transactions on Antennas and Propagation, vol. 61, no. 5, pp. 2466-2473, May 2013. doi: 10.1109/TAP.2013.2239954
  31. M. M. Botha, “Accuracy of Near-Singularity Cancellation Quadrature Schemes for the Dynamic MoM Kernel,” in IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 714-717, 2013. doi: 10.1109/LAWP.2013.2264714
  32. A. J. Otto, N. Marais, E. Lezar and D. B. Davidson, “Using the FEniCS Package for FEM Solutions in Electromagnetics,” in IEEE Antennas and Propagation Magazine, vol. 54, no. 4, pp. 206-223, Aug. 2012. doi: 10.1109/MAP.2012.6309184
  33. D. B. Davidson, “Potential technological spin-offs from MeerKAT and the South African Square Kilometre Array bid”, South African Journal of Science, vol. 108, no. 1-2, pp.13-15, January/February 2012.
  34. D. I. L. de Villiers, “Aperture Efficiency Predictions in Symmetrical Paraboloidal Reflector Antennas With Nonplanar Log-Periodic-Type Feeds,” in IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 476-479, 2011. doi: 10.1109/LAWP.2011.2155615
  35. D. I. L. de Villiers, “Prediction of Aperture Efficiency Ripple in Clear Aperture Offset Gregorian Antennas,” in IEEE Transactions on Antennas and Propagation, vol. 61, no. 5, pp. 2457-2465, May 2013. doi: 10.1109/TAP.2013.2239953
  36. A. J. Otto and H. C. Reader, “HVDC Corona Space Charge Modeling and Measurement,” in IEEE Transactions on Power Delivery, vol. 26, no. 4, pp. 2630-2637, Oct. 2011. doi: 10.1109/TPWRD.2011.2159137
  37. P. S. van der Merwe, H. C. Reader and D. J. Rossouw, “Cable Tray Connections for Electromagnetic Interference (EMI) Mitigation,” in IEEE Transactions on Electromagnetic Compatibility, vol. 53, no. 2, pp. 332-338, May 2011. doi: 10.1109/TEMC.2010.2079937
  38. P. G. Wiid, H. C. Reader and R. H. Geschke, “Radio Frequency Interference and Lightning Studies of a Square Kilometre Array Demonstrator Structure,” in IEEE Transactions on Electromagnetic Compatibility, vol. 53, no. 2, pp. 543-547, May 2011. doi: 10.1109/TEMC.2011.2113185

Patents:

  1. S. Prinsloo, R. Maaskant, M. V. Ivashina, P. Meyer, Multi-Mode Composite Antenna, Patent no. PCT/IB2015/050300, 17 January 2015, Stellenbosch.
  2. S. Prinsloo, R. Maaskant, M. V. Ivashina, P. Meyer, Tapered Slot Quad-Mode Antenna, Patent no. PCT/IB2015/056762., 12 September 2015, Stellenbosch

Conferences:

More than 100 papers have been published in peer-reviewed conference proceedings.  Details can be downloaded here.