Zobrazeno 1 - 10
of 17
pro vyhledávání: '"E. E. M. Woestenburg"'
Autor:
E. A. K. Adams, B. Adebahr, W. J. G. de Blok, H. Dénes, K. M. Hess, J. M. van der Hulst, A. Kutkin, D. M. Lucero, R. Morganti, V. A. Moss, T. A. Oosterloo, E. Orrú, R. Schulz, A. S. van Amesfoort, A. Berger, O. M. Boersma, M. Bouwhuis, R. van den Brink, W. A. van Cappellen, L. Connor, A. H. W. M. Coolen, S. Damstra, G. N. J. van Diepen, T. J. Dijkema, N. Ebbendorf, Y. G. Grange, R. de Goei, A. W. Gunst, H. A. Holties, B. Hut, M. V. Ivashina, G. I. G. Józsa, J. van Leeuwen, G. M. Loose, Y. Maan, M. Mancini, Á. Mika, H. Mulder, M. J. Norden, A. R. Offringa, L. C. Oostrum, I. Pastor-Marazuela, D. J. Pisano, A. A. Ponomareva, J. W. Romein, M. Ruiter, A. P. Schoenmakers, D. van der Schuur, J. J. Sluman, R. Smits, K. J. C. Stuurwold, J. Verstappen, N. P. E. Vilchez, D. Vohl, K. J. Wierenga, S. J. Wijnholds, E. E. M. Woestenburg, A. W. Zanting, J. Ziemke
Publikováno v:
Astronomy and astrophysics, 667:A38. EDP Sciences
Full list of authors: Adams, E. A. K.; Adebahr, B.; de Blok, W. J. G.; Denes, H.; Hess, K. M.; van der Hulst, J. M.; Kutkin, A.; Lucero, D. M.; Morganti, R.; Moss, V. A.; Oosterloo, T. A.; Orru, E.; Schulz, R.; van Amesfoort, A. S.; Berger, A.; Boers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64463ce74e5867c1ce577f07d22fb05c
http://arxiv.org/abs/2208.05348
http://arxiv.org/abs/2208.05348
Autor:
W. A. van Cappellen, T. A. Oosterloo, M. A. W. Verheijen, E. A. K. Adams, B. Adebahr, R. Braun, K. M. Hess, H. Holties, J. M. van der Hulst, B. Hut, E. Kooistra, J. van Leeuwen, G. M. Loose, R. Morganti, V. A. Moss, E. Orrú, M. Ruiter, A. P. Schoenmakers, N. J. Vermaas, S. J. Wijnholds, A. S. van Amesfoort, M. J. Arts, J. J. Attema, L. Bakker, C. G. Bassa, J. E. Bast, P. Benthem, R. Beukema, R. Blaauw, W. J. G. de Blok, M. Bouwhuis, R. H. van den Brink, L. Connor, A. H. W. M. Coolen, S. Damstra, G. N. J. van Diepen, R. de Goei, H. Dénes, M. Drost, N. Ebbendorf, B. S. Frank, D. W. Gardenier, M. Gerbers, Y. G. Grange, T. Grit, A. W. Gunst, N. Gupta, M. V. Ivashina, G. I. G. Józsa, G. H. Janssen, A. Koster, G. H. Kruithof, S. J. Kuindersma, A. Kutkin, D. M. Lucero, Y. Maan, F. M. Maccagni, J. van der Marel, A. Mika, J. Morawietz, H. Mulder, E. Mulder, M. J. Norden, A. R. Offringa, L. C. Oostrum, R. E. Overeem, Z. Paragi, H. J. Pepping, E. Petroff, D. J. Pisano, A. G. Polatidis, P. Prasad, J. P. R. de Reijer, J. W. Romein, J. Schaap, G. W. Schoonderbeek, R. Schulz, D. van der Schuur, A. Sclocco, J. J. Sluman, R. Smits, B. W. Stappers, S. M. Straal, K. J. C. Stuurwold, J. Verstappen, D. Vohl, K. J. Wierenga, E. E. M. Woestenburg, A. W. Zanting, J. Ziemke
Publikováno v:
Astronomy and astrophysics, 658:A146. EDP Sciences
We describe the APERture Tile In Focus (Apertif) system, a phased array feed (PAF) upgrade of the Westerbork Synthesis Radio Telescope that transforms this telescope into a high-sensitivity, wide-field-of-view L-band imaging and transient survey inst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2843549241de224a53add3512aaf8a8
https://resolver.caltech.edu/CaltechAUTHORS:20220216-572639625
https://resolver.caltech.edu/CaltechAUTHORS:20220216-572639625
Autor:
E. E. M. Woestenburg, R.H. Witvers
Publikováno v:
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA).
Recent experimental results for the sensitivity of aperture arrays at room temperature show 40 K array noise temperatures over the frequency range from 1000 MHz to 1500 MHz. Further reduction of array noise temperature is important to comply with the
Autor:
E. E. M. Woestenburg, R.H. Witvers
Publikováno v:
2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC).
Aperture array technology is one of the possible technologies for the mid frequency range of the SKA, from 500 to 1500 MHz. Showing 50 K system noise temperature in the 1–1.5 GHz frequency range, aperture arrays have proven to be a feasible option
Autor:
E. E. M. Woestenburg, J. C. Kuenen
Publikováno v:
Experimental Astronomy. 17:89-99
Publikováno v:
2014 International Conference on Electromagnetics in Advanced Applications (ICEAA).
Aperture arrays have been studied extensively for application in the next generation of large radio telescopes for astronomy, requiring extremely low noise performance. Prototype array systems need to demonstrate the low noise potential of aperture a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b524d4274aee71e20bf789f193754995
http://arxiv.org/abs/1108.5433
http://arxiv.org/abs/1108.5433
Publikováno v:
2010 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS).
Integration technology is discussed for the realization of a square kilometre radio telescope and in particular the Low Noise Amplifier (LNA). Very low noise figures with a room temperature LNA of sub 0.2dB have been achieved with 70nm mHEMT technolo
Autor:
R.H. Witvers, E. E. M. Woestenburg, W. A. van Cappellen, G. W. Kant, L. Bakker, J. G. Bij de Vaate
Publikováno v:
2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting.
Developments in radio astronomy instrumentation drive the need for lower cost front-ends due to the large number of antennas and low noise amplifiers needed. This paper describes cost reduction techniques for the realization of antennas and low noise
Publikováno v:
2007 European Radar Conference.
This paper describes the design of two ultra low noise amplifiers in a differential configuration for radioastronomy applications and the characterization of the noise performance with hot/cold-methods.