Zobrazeno 1 - 10 of 65 pro vyhledávání: '"Antti Räisänen"'
1
Conductivity of Carbon Nanotube Layers at Low-Terahertz Frequencies
Autor: Irina Nefedova, Igor Nefedov, Antti Räisänen, Dmitri Lioubtchenko
Publikováno v: IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY. 6(6):840-845
Wave propagation in a dielectric rod waveguide loaded with carbon nanotube (CNT) layers was studied experimentally at the wide frequency range of 75–320 GHz. Analytical calculations and computer modeling indicate that the measured losses at low-ter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::583e4f37217c9f136f7a1e327d0c35a3
https://doi.org/10.1109/TTHZ.2016.2602548
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2
Dielectric Constant Estimation of a Carbon Nanotube Layer on the Dielectric Rod Waveguide at Millimeter Wavelengths
Autor: Irina Nefedova, Igor Nefedov, Antti Räisänen, Dmitri Lioubtchenko
Publikováno v: IEEE Transactions on Microwave Theory and Techniques. 63:3265-3271
A method has been developed to estimate dielectric properties of a layer containing carbon nanotubes (CNTs) randomly arranged in plane, deposited on a dielectric rod waveguide (DRW). In the framework of this method, a theoretical model of a layered D
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69c7b20094704f80ea6f9cbca3620eaf
https://doi.org/10.1109/tmtt.2015.2470254
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4
Characterisation of THz Schottky diodes for MetOp-SG instruments
Autor: Khanal, S., Kiuru, T., Thomas, B., Mallat, J., Pinta, C., Nagel, M., Walber, A., Kangas, V., Perichaud, M., Brandt, M., Närhi, T., Antti Räisänen
Publikováno v: Khanal, S, Kiuru, T, Thomas, B, Mallat, J, Pinta, C, Nagel, M, Walber, A, Kangas, V, Perichaud, M, Brandt, M, Närhi, T & Räisänen, A 2015, Characterisation of THz Schottky diodes for MetOp-SG instruments . in Proceedings of the 26th International Symposium on Space Terahertz Technology, 2015 ., T1-4, Harvard-Smithsonian Center for Astrophysics, 26th International Symposium on Space Terahertz Technology, Cambridge, Massachusetts, United States, 16/03/15 . < https://www.cfa.harvard.edu/events/2015/isstt2015/proceedings/files/ISSTT2015_T1-4_Khanal_Abstract.pdf >
Scopus-Elsevier
Schottky diode technology is used for frequency conversion and generation in three of the mm-wave and THz instruments on-board the European Space Agency's MetOp-SG satellites. The instruments are MWS (MicroWave Sounder), MWI (Microwave Imager) and IC
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::ff200fc6afebe76df9316eab489c2e99
https://cris.vtt.fi/en/publications/efeb809c-bc02-4289-a79b-6c8f44a7ad3f
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5
Yliopisto tunnetaan tohtoreistaan
Autor: Räisänen, Antti
Publikováno v: Tieteessä tapahtuu
Väitöskirjoilla on globaali arvo. Ihmiskunnalla on parhaillaan ratkottavana monia ongelmia: energian riittävyys, ilmaston muutos, ympäristön saastuminen, kehittyneissä maissa väestön ikääntyminen, terveys ja hyvinvointi, ruoka, tiedon väli
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=a89337edbe55::4ff44253fd01b6c9b19f98836e3aa418
https://journal.fi/tt/article/view/8018
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6
Conformal antenna array for 60 GHz applications
Autor: Semkin, V., Kyro, M., Kolmonen, V. -M, Luxey, C., Bisognin, A., Ferrero, F., Happy, H., Antti Räisänen
Publikováno v: 7th European Conference on Antennas and Propagation, EuCAP 2013
7th European Conference on Antennas and Propagation, EuCAP 2013, 2013, Gothenburg, Sweden. pp.605-608
Scopus-Elsevier
Communication internationale avec actes #11616; International audience; In this work, the design of a millimeter-wave conformal antenna array for cylindrical structure is developed. Antenna array consists of 4x4 elements and operates at 60 GHz. Diffe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3f058233361c480c5c108368d31a938b
https://hal.archives-ouvertes.fr/hal-00877722
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7
Measurement of Dielectric Properties at 75-325 GHz using a Vector Network Analyzer and Full Wave Simulator
Autor: Khanal, Subash, Kiuru, Tero, Mallat, Juha, Luukkonen, Olli, Antti Räisänen
Publikováno v: Khanal, S, Kiuru, T, Mallat, J, Luukkonen, O & Räisänen, A V 2012, ' Measurement of Dielectric Properties at 75-325 GHz using a Vector Network Analyzer and Full Wave Simulator ', Radioengineering, vol. 21, no. 2, pp. 551-556 . < http://www.radioeng.cz/fulltexts/2012/12_02_0551_0556.pdf >
Scopus-Elsevier
ResearcherID
This paper presents a fast and easy to use method to determine permittivity and loss tangent in the frequency range of 75 to 325 GHz. To obtain the permittivity and the loss tangent of the test material, the reflection and transmission S-parameters o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::60d8c916429426b1f6bb302dc5ac2826
https://cris.vtt.fi/en/publications/9c488f6b-8833-46e7-acf4-b6857f4fd711
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8
Optimal eccentricity of a low permittivity integrated lens for a high-gain beam-steering antenna
Autor: Karttunen, A., Ala-Laurinaho, J., Sauleau, R., Antti Räisänen
Publikováno v: European Conference on Antennas and Propagation, EuCAP 2011
European Conference on Antennas and Propagation, EuCAP 2011, Apr 2011, Rome, Italy. pp.3522-3526, 2011
European Conference on Antennas and Propagation, EuCAP 2011, Apr 2011, Rome, Italy. pp.3522-3526
Scopus-Elsevier
International audience
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8e650180001a357b015354af9ed542dc
https://hal.archives-ouvertes.fr/hal-00664590
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9
New verification routine for pulsed I-V and transient current measurement setup applied to a THz Schottky diode
Autor: Khanal, S., Kiuru, T., Mallat, J., Antti Räisänen, Narhi, T.
Publikováno v: Scopus-Elsevier
Khanal, S, Kiuru, T, Mallat, J, Räisänen, A V & Närhi, T 2013, New verification routine for pulsed I-V and transient current measurement setup applied to a THz Schottky diode . in 43rd European Microwave Conference, EuMC 2013 . IEEE Institute of Electrical and Electronic Engineers, pp. 1279-1282, 43rd European Microwave Conference, EuMC 2013, Nuremberg, Bavaria, Germany, 7/10/13 . https://doi.org/10.23919/EuMC.2013.6686898
In this paper, a verification routine is developed for validating extremely fast pulsed I-V and transient current measurement setups. The measurements performed for the routine include pulsed I-V measurement with different pulse widths (using several
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e7acdecdceeb72a9e5311902be4ce02a
http://www.scopus.com/inward/record.url?eid=2-s2.0-84893481497&partnerID=MN8TOARS
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10
New pattern correction techniques for submm-wave catrs
Autor: Ville Viikari, Juha Mallat, Juha Ala-Laurinaho, Janne Häkli, Aki Karttunen, Tomi Koskinen, Anne Lönnqvist, Eero Noponen, Matti Vaaja, Antti Räisänen
Publikováno v: Scopus-Elsevier
Aalto University
Viikari, V, Mallat, J, Ala-Laurinaho, J, Häkli, J, Karttunen, A, Koskinen, T, Lönnqvist, A, Noponen, E, Vaaja, M & Räisänen, A V 2006, New pattern correction techniques for submm-wave catrs . in Proceedings of The European Conference on Antennas and Propagation : EuCAP 2006 . European Space Agency (ESA), ESA Special Publication, vol. 626, 1st European Conference on Antennas and Propagation, EuCAP 2006, Nice, France, 6/11/06 .
The highest operation frequency and the measurement accuracy of compact antenna test ranges (CATRs) are limited by the manufacturing technology of the range collimating element. This paper reviews antenna pattern correction techniques, which can be u
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::1c87a5ad4df9d8e2e611072e9c25dc2b
http://www.scopus.com/inward/record.url?eid=2-s2.0-33847358802&partnerID=MN8TOARS
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