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Baryshev, A.M. (author), Hesper, R. (author), Mena, F.P. (author), Klapwijk, T.M. (author), Van Kempen, T.A. (author), Hogerheijde, M.R. (author), Jackson, B.D. (author), Adema, J. (author), Gerlofsma, G.J. (author), Bekema, M.E. (author), Barkhof, J. (author), De Haan-Stijkel, L.H.R. (author), Van den Bemt, M. (author), Koops, A. (author), Keizer, K. (author), Pieters, C. (author), Koops van het Jagt, J. (author), Schaeffer, H.H.A. (author), Zijlstra, T. (author), Kroug, M. (author), Lodewijk, C.F.J. (author), Wielinga, K. (author), Boland, W. (author), Van Dishoeck, E.F. (author), Jager, H. (author), Wild, W. (author)Aims. We describe the design, construction, and characterization of the Band 9 heterodyne receivers (600–720 GHz) for the Atacama Large Millimeter/submillimeter Array (ALMA). First-light Band 9 data, obtained during ALMA commissioning and science verification phases, are presented as well. Methods. The ALMA Band 9 receiver units (so-called ...journal article 2015
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De Lange, G. (author), Jackson, B.D. (author), Jochemsen, M. (author), Laauwen, W.M. (author), De Jong, L. (author), Kroug, M. (author), Zijlstra, T. (author), Klapwijk, T.M. (author)We describe the performance of the Band 3 and Band 4 Flight Model mixer units for Herschel/HIFI Instrument. These units are part of the Focal Plane Unit of HIFI. The band 3 and 4 mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The sensitivities of the mixers within the HIFI setting are...conference paper 2006
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Jackson, B.D. (author), De Lange, G. (author), Zijlstra, T. (author), Kroug, M. (author), Klapwijk, T.M. (author), Stern, J.A. (author)Integrating NbTiN-based microstrip tuning circuits with traditional Nb superconductor-insulator-superconductor (SIS) junctions enables the low-noise operation regime of SIS mixers to be extended from below 0.7?to?1.15?THz. In particular, mixers incorporating a NbTiN/SiO2/NbTiN microstrip tuning circuit offer low-noise performance below 0.8–0.85...journal article 2005
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- Russo, S. (author), Kroug, M. (author), Klapwijk, T.M. (author), Morpugo, A.F. (author) journal article 2005
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- Iosad, N.N. (author), Kroug, M. (author), Zijlstra, T. (author), Ermakov, A.B. (author), Jackson, B.D. (author), Zuiddam, M. (author), Meijer, F.E. (author), Klapwijk, T.M. (author) journal article 2003