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Korevaar, C.W. (author), Boschma, J.J. (author), den Breeje, R. (author), Ebert, J. (author)Optical feeder links (OFLs) benefit from the vast amount of bandwidth available in the THz-regime of the electro-magnetic spectrum, and could enable future terabit-per-second satellite systems. This study assesses the end-to-end performance of analog coherent OFLs for digital video broadcasting (DVB) applications, employing phase modulation (PM)...conference paper 2022
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Alrushud, K.M. (author), Gomez-Guillamon Buendia, V.A. (author), Podilchak, S.K. (author)A planar quasi-endfire surface-wave antenna (SWA) using substrate integrated waveguide (SIW) technology for integration with CubeSats and other small satellites is proposed in this letter. This antenna can be attached to the body of the satellite, resulting in a compact and low-cost design. A quasi-endfire beam pattern is achieved by the...article 2021
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Saathof, R. (author), Crowcombe, W.E. (author), Kuiper, S. (author), van der Valk, N.C.J. (author), Pettazzi, F. (author), de Lange, T.J. (author), Kerkhof, P.J. (author), van Riel, M.C.J.M. (author), de Man, H. (author), Truyens, D.C. (author), Ferrario, I. (author)Optical communications will complement radio frequency (RF) communications in the coming decades to enhance throughput, power efficiency and link security of satellite communication links. To enable optical communications technology for intersatellite links and (bi-directional) ground to satellite links, TNO develops a suite of technologies in...conference paper 2018
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Neto, A. (author), Ettorre, M. (author), Gerini, G. (author), de Maagt, P. (author)The use of dielectric super-layers for shaping the radiation pattern of focal plane feeds of a multibeam reflector system is discussed. Using the super-layers, it is possible to reduce the spillover from the reflectors without increasing the dimension of each aperture. The effect has been demonstrated using a realistic array configuration. The...article 2012
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Simal-Gándara, J. (author), Sarria-Vidal, M. (author), Rijk, M.A.H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)A liquid chromatographic method with evaporative mass detection (EMD) is described for the determination of paraffins in food contact materials that do not contain polyolefin oligomers, or paraffins migrating from these materials into fatty food simulants or certain simple foods. A normal-phase column operating at maximum column efficiency...article 2000