Comparison of the communication time of a high gain versus a low gain monopole-like low profile antenna on a 3-unit CubeSat. - Patsa A. Khotso; Robert Lehmensiek; R. R. van Zyl (AFRICON, 2011)

The design of an HF antenna on a 1U CubeSat. - Robert Lehmensiek; Robert van Zyl; D. F. Visser (AFRICON, 2013)

Towards an optics design for the SKA. - I. P. Theron; Robert Lehmensiek; Dirk I. L. de Villiers (AFRICON, 2013)

Noise Temperature Approximations for Offset Gregorian Reflector Systems. - Robert Lehmensiek; Dirk I. L. de Villiers (IEICE Trans. Commun., 2018)

Effects of Diffraction and Feed Pattern Variation in Shaped Offset Gregorian Reflectors. - Dirk I. L. de Villiers; Robert Lehmensiek; Marianna V. Ivashina (IEICE Trans. Commun., 2018)