Zobrazeno 1 - 10 of 31 pro vyhledávání: '"Arto Hujanen"'
1
Design and Testing Radome for D-band applications
Autor: Arto Hujanen, Alexandros I. Dimitriadis, Jussi Säily, Vladimir Ermolov
Publikováno v: Hujanen, A, Dimitriadis, A I, Säily, J & Ermolov, V 2023, Design and Testing Radome for D-band applications . in 2023 17th European Conference on Antennas and Propagation (EuCAP) ., 10133295, Wiley-IEEE Press, pp. 1-5, 2023 17th European Conference on Antennas and Propagation (EuCAP), 26/03/23 . https://doi.org/10.23919/EuCAP57121.2023.10133295
The paper presents results of characterization of dielectric properties of several commercial radome materials in D-band. It is demonstrated that there are commercial radome materials on the market already today which can be used for D-band radome. A
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bb1ff26a50fc366e9e4c68626d865e5
https://doi.org/10.23919/EuCAP57121.2023.10133295
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3
Effect of Plastering Mesh on Radio Signals: Modelling and Practical Measurements
Autor: Arto Hujanen, Ismo Huhtinen, Mikko Valkama, Jussa Pikkuvirta, Ari Asp
Publikováno v: EuCNC
Asp, A, Hujanen, A, Huhtinen, I, Pikkuvirta, J & Valkama, M 2020, Effect of plastering mesh on radio signals : Modelling and practical measurements . in 2020 European Conference on Networks and Communications, EuCNC 2020 ., 9200927, IEEE Institute of Electrical and Electronic Engineers, European Conference on Networks and Communications, vol. 2020, pp. 68-73, 29th European Conference on Networks and Communications, EuCNC 2020, Dubrovnik, Croatia, 15/06/20 . https://doi.org/10.1109/EuCNC48522.2020.9200927
The improvement of the energy efficiency of a building is often one of the reasons for the renovation of building facades. During such renovations, the energy efficiency is usually improved by increasing the thickness of insulation layer. The increas
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d79cd097ae5a5bf7f1192ad36f3ae6c
https://doi.org/10.1109/eucnc48522.2020.9200927
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4
Impact of concrete moisture on radio propagation
Autor: Jussa Pikkuvirta, Arto Hujanen, Ismo Huhtinen, Ari Asp, Tuomo Hentila, Mikko Valkama
Publikováno v: Asp, A, Hentila, T, Valkama, M, Pikkuvirta, J, Hujanen, A & Huhtinen, I 2019, Impact of concrete moisture on radio propagation : Fundamentals and measurements of concrete samples . in ISWCS 2019 : 16th International Symposium on Wireless Communication Systems ., 8877182, VDE Verlag, International Symposium on Wireless Communication Systems, vol. 16, pp. 542-547, 16th International Symposium on Wireless Communication Systems, ISWCS 2019, Oulu, Finland, 27/08/19 . https://doi.org/10.1109/ISWCS.2019.8877182
ISWCS
Since 1960’s concrete based wall panel systems have become more popular especially in multi-storey residential buildings. The main components of concrete are water, cement and aggregates and especially water-to-cement ratio has a significant influe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26f4893b805189ba9b61d26a03eff361
https://doi.org/10.1109/ISWCS.2019.8877182
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5
Impact of Different Concrete Types on Radio Propagation
Autor: Jussa Pikkuvirta, Mikko Valkama, Ari Asp, Tuomo Hentila, Arto Hujanen, Ismo Huhtinen
Publikováno v: Asp, A, Hentilä, T, Valkama, M, Pikkuvirta, J, Hujanen, A & Huhtinen, I 2019, Impact of Different Concrete Types on Radio Propagation : Fundamentals and Practical RF Measurements . in J J P C Rodrigues, P Solic, T Perkovic, K Vukojevic, J J P C Rodrigues, L Patrono & S Nizetic (eds), 4th International Conference on Smart and Sustainable Technologies, SpliTech 2019 . IEEE Institute of Electrical and Electronic Engineers, 4th International Conference on Smart and Sustainable Technologies, SpliTech 2019, Bol/Split, Croatia, 18/06/19 . https://doi.org/10.23919/SpliTech.2019.8783022
By the 1960's, European countries faced a massive housing shortage due to changes in social structure and migration from rural areas to towns. This led to a rapid growth of suburban areas in the 1960's and 1970's. Concrete, as a building material bec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9499312a05640eeadaf651090caf1405
https://doi.org/10.23919/SpliTech.2019.8783022
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6
Window and wall penetration loss on-site measurements with three methods
Autor: Seppo Horsmanheimo, Sinh Le Hong Nguyen, Jouko Aurinsalo, Katsuyuki Haneda, Ari Asp, Aki Karttunen, Pasi Koivumaki, Arto Hujanen, Ismo Huhtinen, Tuomo Hentila, Matti Somersalo
Publikováno v: Karttunen, A, Le Hong Nguyen, S, Koivumäki, P, Haneda, K, Hentilä, T, Asp, A, Hujanen, A, Huhtinen, I, Somersalo, M, Horsmanheimo, S & Aurinsalo, J 2018, Window and wall penetration loss on-site measurements with three methods . in 12th European Conference on Antennas and Propagation . vol. CP741, Institution of Engineering and Technology IET, 12th European Conference on Antennas and Propagation, EuCAP 2018, London, United Kingdom, 9/04/18 . https://doi.org/10.1049/cp.2018.0380
Three methods suitable for on-site window and wall penetration loss measurements are presented and compared. The methods are (i) outdoor-to-indoor channel measurement, (ii) far-field penetration loss measurement, and (iii) near-field penetration loss
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4459065b127524f5d2424aa54b694f2
http://juuli.fi/Record/0333495318
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7
Development of Ba-hexaferrite coatings for electromagnetic wave absorption applications
Autor: Thomas Schlaefer, Markus Bruehl, Kirsten Bobzin, Arto Hujanen, Darja Lisjak, Massimo Pasquale, Tommi Varis, Ulla Kanerva, Giovanni Bolelli, Luca Lusvarghi, Pertti Lintunen, Marion Bégard
Publikováno v: Bobzin, K, Schlaefer, T, Bégard, M, Bruehl, M, Bolelli, G, Lusvarghi, L, Lisjak, D, Hujanen, A, Lintunen, P, Kanerva, U, Varis, T & Pasquale, M 2010, ' Development of Ba-hexaferrite coatings for electromagnetic wave absorption applications ', Surface and Coatings Technology, vol. 205, no. 4, pp. 1015-1020 . https://doi.org/10.1016/j.surfcoat.2010.03.060
In this research, Ba-hexaferrite coatings for electromagnetic wave absorption applications were deposited by thermal spraying. A suitable powder feedstock was manufactured by blending a BaCO3 + Fe2O3 mixture, which was then agglomerated by spray-dryi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2d3bce330435ff5caa273c3143f6258
https://doi.org/10.1016/j.surfcoat.2010.03.060
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8
Preparation of barium hexaferrite coatings using atmospheric plasma spraying
Autor: K. Richardt, Arto Hujanen, Pertti Lintunen, Giovanni Bolelli, E.S. Olivetti, Darja Lisjak, Luca Lusvarghi, Kirsten Bobzin, Marion Bégard, Massimo Pasquale, Miha Drofenik, Thomas Schläfer
Publikováno v: Lisjak, D, Bobzin, K, Richardt, K, Bégard, M, Bolelli, G, Lusvarghi, L, Hujanen, A, Lintunen, P, Pasquale, M, Olivetti, E, Drofenik, M & Schläfer, T 2009, ' Preparation of barium hexaferrite coatings using atmospheric plasma spraying ', Journal of the European Ceramic Society, vol. 29, no. 11, pp. 2333-2341 . https://doi.org/10.1016/j.jeurceramsoc.2009.01.028
Thick coatings of barium hexaferrite with the compositions BaFe12O19 and BaCoTiFe10O19 were prepared using atmospheric plasma spraying (APS) technology. The coatings were prepared from pre-reacted powders of the desired composition. The as-deposited
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17d99d71584db5ed0e6cf8a1358703dd
https://doi.org/10.1016/j.jeurceramsoc.2009.01.028
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9
The Preparation of Barium Hexaferrite Coatings Using HVOF
Autor: Darko Makovec, Arto Hujanen, Tommi Varis, Luca Lusvarghi, Pertti Lintunen, Giovanni Bolelli, Miha Drofenik, Darja Lisjak, Sašo Gyrgyek
Publikováno v: Lisjak, D, Makovec, D, Gyrgyek, S, Hujanen, A, Lintunen, P, Varis, T, Bolelli, G, Lusvarghi, L & Drofenik, M 2009, ' The preparation of barium hexaferrite coatings using HVOF ', Journal of the American Ceramic Society, vol. 92, no. 4, pp. 818-824 . https://doi.org/10.1111/j.1551-2916.2009.03007.x
Thick coatings of barium hexaferrite with the compositions BaFe12O19 and BaCoTiFe10O19 were prepared using high‐velocity oxygen‐fuel (HVOF) spraying technology. Nanocrystalline precursors embedded in an amorphous matrix were obtained on both Fe a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad08d74c812f6d156f60ba773d3c8570
https://doi.org/10.1111/j.1551-2916.2009.03007.x
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10
CAST - RCS tool for modelling versatile size targets
Autor: Jarkko Kylmala, Lotta Tuomimäki, Arto Hujanen, Seppo Horsmanheimo
Publikováno v: MILCOM
Horsmanheimo, S, Hujanen, A, Tuomimäki, L & Kylmälä, J 2015, CAST : RCS tool for modelling versatile size targets . in Military Communications Conference, MILCOM 2015-2015 IEEE . IEEE Institute of Electrical and Electronic Engineers, pp. 1076-1080, 34th Annual IEEE Military Communications Conference, Tampa, Florida, United States, 26/10/15 . https://doi.org/10.1109/MILCOM.2015.7357588
Radar cross section (RCS) and inverse synthetic aperture radar (ISAR) are two important application areas for computation intensive RCS tools. Their objective is to control RCS signature in case of different types of mono-static and bistatic radars.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e7fe0dee5dc501706bc25b5141d405f
https://doi.org/10.1109/milcom.2015.7357588
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