Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Harald Franz Arno Merkel"'
Publikováno v:
Microwave and Optical Technology Letters. 50:416-419
A novel dielectric catadioptric lens, suitable for near-field sensing and imaging, is presented. The focusing property and the far-field pattern of the lens are investigated using a 3D full-wave electromagnetic solver. Furthermore, the proposed catad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0d378c7afb4df827e7a3234f814bf2f
https://doi.org/10.1002/mop.23100
https://doi.org/10.1002/mop.23100
Autor:
B. Lecomte, B. Leone, Harald Franz Arno Merkel, V. Drakinsky, Patrick Pons, M. Salez, G.N. Gol'tsman, Serguei Cherednichenko, J. Baubert
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:507-510
SHAHIRA (Submm Heterodyne Array for HIgh-speed Radio Astronomy) is a project supported by the European Space Agency (ESA) and is designed to fly on the SOFIA observatory. A quasi-optic design has been chosen for 2.5/2.7 THz and 4.7 THz, for hydroxyde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc376ba531698da4a3d5facea3cb7543
https://doi.org/10.1109/tasc.2005.849890
https://doi.org/10.1109/tasc.2005.849890
Autor:
Heiko Richter, Matthias Kroug, P. Khosropanah, Harald Franz Arno Merkel, Aurèle J. L. Adam, H.-W. Huebers, D. Loudkov, G.N. Gol'tsman, Boris M. Voronov, Serguei Cherednichenko, E. L. Kollberg
Publikováno v:
Physica C: Superconductivity. :427-431
A low noise heterodyne receiver is being developed for the terahertz range using a phonon-cooled hot-electron bolometric mixer based on 3.5 nm thick superconducting NbN film. In the 1–2 GHz intermediate frequency band the double-sideband receiver n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05d1141e4514d48353ab47ff29d84f51
https://doi.org/10.1016/s0921-4534(02)00715-3
https://doi.org/10.1016/s0921-4534(02)00715-3
Autor:
Harald Franz Arno Merkel, E. L. Kollberg, Matthias Kroug, Serguei Cherednichenko, P. Khosropanah
Publikováno v:
Physica C: Superconductivity. :407-415
Hot-electron bolometer frequency down-converters (mixers) based on superconducting films have been found to offer record sensitivity for THz receivers to be used in radio astronomy. In this paper we focus on mixers using NbN phonon-cooled devices. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55731b452560a9dbb29b5238e1fb0948
https://doi.org/10.1016/s0921-4534(02)00711-6
https://doi.org/10.1016/s0921-4534(02)00711-6
Autor:
Matthias Kroug, H.-W. Huebers, Boris M. Voronov, G.N. Gol'tsman, E. L. Kollberg, Harald Franz Arno Merkel, H. Richter, Serguei Cherednichenko
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 11:962-965
Sensitivity and gain bandwidth measurements of phonon-cooled NbN superconducting hot-electron bolometer mixers are presented. The best receiver noise temperatures are: 700 K at 1.6 THz and 1100 K at 2.5 THz. Parylene as an antireflection coating on s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f51fb5c2ab685b9b964996265e598b0
https://doi.org/10.1109/77.919508
https://doi.org/10.1109/77.919508
Autor:
K. S. Yngvesson, P. Khosropanah, E.I. Kollberg, Serguei Cherednichenko, Harald Franz Arno Merkel, Aurèle J. L. Adam
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 11:179-182
A hot spot model for superconducting hot electron bolometers is presented based on a two-dimensional heat transport equation for electrons and phonons including heat trapping due to quasiparticle bandgap gradients. Skin effect concentrates the RF hea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bfec78b193d4562e52c87b374b9efcf
https://doi.org/10.1109/77.919314
https://doi.org/10.1109/77.919314
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 48:690-699
In this paper, a one-dimensional heat balance model for the hot-spot length of phonon-cooled hot-electron bolometer is set up and solved for the electron temperature profile along the bolometer bridge. A self-consistent theoretical method is presente
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::898a7da56569922e5f92fc7098ec1bde
https://doi.org/10.1109/22.841961
https://doi.org/10.1109/22.841961
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:4201-4204
Based on a one dimensional heat transport equation for the electrons in a super-conducting hot electron bolometer (HEB) a model for a hot spot mixer is see up. The hot spot parameters are applied in a small signal oscillator model predicting IV curve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73fcd63719b19064668f83bc8eef8072
https://doi.org/10.1109/77.783951
https://doi.org/10.1109/77.783951
Autor:
Gerhard Schwaab, Pavel A. Yagoubov, E. L. Kollberg, Matthias Kroug, J. Schubert, Heinz-Wilhelm Hübers, G.N. Gol'tsman, Harald Franz Arno Merkel, E. M. Gershenzon
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:3757-3760
The performance of a NbN based phonon-cooled Hot Electron Bolometric (HEB) quasioptical mixer is investigated in the 0.65-3.12 THz frequency range. The device is made from a 3 nm thick NbN film on high resistivity Si and integrated with a planar spir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de92b1e50b2f2e055bb424f1e621e4fb
https://doi.org/10.1109/77.783845
https://doi.org/10.1109/77.783845
Autor:
Brian Jackson, B. Kopf, R. Bieber, R. Güsten, A. M. di Giorgio, J. A. Stern, Holger S. P. Müller, B. J. van Leeuwen, G. S. Liu, R. Orfei, Neal R. Erickson, R. Lai, B. Delforges, Wolfgang Wild, Christian Leinz, O. Coeur-Joly, J. Desbat, David Teyssier, S. D. Lord, Karl Jacobs, Bruce Bumble, Lorene Samoska, M. Rataj, R. H. Lin, Dominicus Kester, M. Salez, X. Tielens, Alexandre Karpov, Paolo Saraceno, K. Edwards, R. Huisman, A. Megej, K. F. Schuster, Michel Fich, L. Dubbeldam, Serguei Cherednichenko, H. Golstein, Christian Monstein, J. A. Murphy, C. van Baaren, Victor Belitsky, P. Planesas, E. Natale, Michael Olberg, Lorenzo Piazzo, T. Peacock, Martin Eggens, Emmanuel Caux, W. A. Hatch, Neil Trappe, Hubregt J. Visser, Herbert Zirath, Jaap Evers, S. Phillip-May, Alain Maestrini, Hamid Javadi, Jacob Kooi, Th. de Graauw, F. Schmülling, E. C. Honingh, C. McCoey, J. C. Pearson, W. Luinge, I. Lopez-Fernandez, W. M. Laauwen, M. Michalska, Bengt Larsson, S. Wulff, John Gill, René Liseau, Volker Ossenkopf, Colin Borys, B. Kruizenga, Rafael Teipen, C. Kramer, A. Cros, H. Goulooze, P. Cais, W. Nowosielski, Goutam Chattopadhyay, M. Stokroos, Rafael Bachiller, F. Zwart, C. Gal, Piotr Orleanski, J. Kawamura, H. Smit, O. Siebertz, H. Aarts, Francesco Nuzzolo, L. Meinsma, Jonas Zmuidzinas, R. Assendorp, D. A. Beintema, H. van de Stadt, Jesús Martín-Pintado, G. de Lange, Ryszard Szczerba, Erich Schlecht, R. Higgins, Christophe Risacher, Patrick W. Morris, H. Jacobs, Christopher Jarchow, Willem Jellema, Pieter Dieleman, Todd Gaier, B. Franke, J. Stutzki, Imran Mehdi, Th. Klein, Harald Franz Arno Merkel, T. Finn, M. Justen, P.R. Wesselius, M. Ciechanowicz, T. M. Klapwijk, Hans-Joachim Wunsch, C. Comito, P. Zaal, Erik L. Kollberg, C. Diez-Gonzalez, T. den Boggende, John Ward, Jian-Rong Gao, Pasquale Cerulli-Irelli, C. Kasemann, T. Kuhn, Frank Helmich, K. Wildeman, Henry G. LeDuc, L. Ravera, Frank Maiwald, Y. Delorme, D. Moratschke, F. Schlöder, J. M. Krieg, M. Olbrich, A. Marston, Juan Daniel Gallego, P.-P. Kooiman, E. Steinmetz, T. Gunsing, A. Naber, M. Melchior, Geert Keizer, M. Schultz, I. Peron, S. Gauffre, C. K. Wafelbakker, N. Whyborn, M. Krause, T. Tils, Alexander Loose, A. de Jonge, Pieter R. Roelfsema, Rudolf Schieder, M. Caris, S. Glenz, A. Barcia, W. Baechtold, Paul Hartogh, R. Shipman, Adwin Boogert, Arnold O. Benz, Thomas G. Phillips
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2010, 518, pp.L6. ⟨10.1051/0004-6361/201014698⟩
Astronomy and Astrophysics-A&A, 2010, 518, pp.L6. ⟨10.1051/0004-6361/201014698⟩
Astronomy and Astrophysics, 7-8, 518
Astronomy & astrophysics, 518:L6. EDP Sciences
Astronomy and Astrophysics-A&A, EDP Sciences, 2010, 518, pp.L6. ⟨10.1051/0004-6361/201014698⟩
Astronomy and Astrophysics-A&A, 2010, 518, pp.L6. ⟨10.1051/0004-6361/201014698⟩
Astronomy and Astrophysics, 7-8, 518
Astronomy & astrophysics, 518:L6. EDP Sciences
International audience; Aims: This paper describes the Heterodyne Instrument for the Far-Infrared (HIFI) that was launched onboard ESA's Herschel Space Observatory in May 2009. Methods: The instrument is a set of 7 heterodyne receivers that are elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e563a81d5849089a8ce2c4add1dd8da6
http://eprints.maynoothuniversity.ie/2083/
http://eprints.maynoothuniversity.ie/2083/
