Research Output

2020

High Voltage Topologies for Very Fast Transient Measurements

Elg, A. P., Passon, S., Meisner, J. & Hällström, J., 1 Jan 2020, Proceedings of the 21st International Symposium on High Voltage Engineering: ISH 2019. Németh, B. (ed.). Springer, Vol. 1. p. 1316-1327 12 p. (Lecture Notes in Electrical Engineering, Vol. 598 LNEE).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Performance of EGNSS-Based Timing in Various Threat Conditions

Honkala, S., Thombre, S., Kirkko-Jaakkola, M., Zelle, H., Veerman, H., Wallin, A. E., DIerikx, E. F., Kaasalainen, S., Soderholm, S. & Kuusniemi, H., May 2020, In : IEEE Transactions on Instrumentation and Measurement. 69, 5, p. 2287-2299 13 p., 8815859.

Research output: Contribution to journalArticleScientificpeer-review

Realisation of a quantum current standard at liquid helium temperature with sub-ppm reproducibility

Giblin, S. P., Mykkänen, E., Kemppinen, A., Immonen, P., Manninen, A., Jenei, M., Möttönen, M., Yamahata, G., Fujiwara, A. & Kataoka, M., 19 Mar 2020, In : Metrologia. 57, 2, 9 p., 025013.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Redundant secure timing sources and timing distribution to digital power protection and control applications

Hauglin, H., Dunker, T., Wallin, A., Tungland, O., Hurzuk, N. & Løken, R., Feb 2020, In : CIGRE Science and Engineering. 17, p. 94-100

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

Thermionic junction devices utilizing phonon blocking

Mykkänen, E., Lehtinen, J. S., Grönberg, L., Shchepetov, A., Timofeev, A. V., Gunnarsson, D., Kemppinen, A., Manninen, A. J. & Prunnila, M., 2020, In : Science advances. 6, 15, eaax9191.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
1 Citation (Scopus)

Transconductance amplifier for optical metrology applications of light-emitting diodes

Dönsberg, T., Poikonen, T. & Ikonen, E., Jun 2020, In : IEEE Transactions on Instrumentation and Measurement. 69, 6, p. 3704-3710 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
1 Citation (Scopus)
2019

Accelerated ageing of organic LED panels using ultraviolet exposure

Askola, J., Calkin, Y., Vaskuri, A., Poikonen, T. & Ikonen, E., 1 Dec 2019, In : Lighting Research and Technology. 51, 8, p. 1263-1274 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Application of Charge-Sensitive Preamplifier for the Calibration of Partial Discharge Calibrators Below 1 pC

Havunen, J. & Hällström, J., Jun 2019, In : IEEE Transactions on Instrumentation and Measurement. 68, 6, p. 2034-2040 7 p., 8640062.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
3 Citations (Scopus)

Broadband lasers for photo-ionization and repumping of trapped ions

Fordell, T. & Lindvall, T., 2019, In : Journal of the Optical Society of America B: Optical Physics. 36, 2, p. 415-420

Research output: Contribution to journalArticleScientificpeer-review

Broadband lasers for photo-ionization and trapped-ion operations

Fordell, T. & Lindvall, T., Jun 2019, 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. IEEE Institute of Electrical and Electronic Engineers, 8871597

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Comparison of Measuring Systems for Puncture Test According to IEC 61211

Hällström, J., Havunen, J., Yan, W., Li, Y., Thelio, M., Vinicius, M., Filho, O. & Laiho, M., 2019, (Accepted/In press) 21st International Symposium on High Voltage Engineering, ISH2019. 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access

Comparison of PD Calibration Capabilities in Four National Metrology Institutes Down to 0.1 pC

Hällström, J., Havunen, J., Bergman, A. E., Elg, A-P., Merev, A., Dedeoglu, S., Karaman, İ., Simón, P., Rovira, J., Garcia, T. & Garnacho, F., 2019, (Accepted/In press) 21st International Symposium on High Voltage Engineering, ISH2019. 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access

Current Step Generation and Measurement with Nanosecond Rise Time using Coaxial Cable Generator

Rehman, M. Z., Hallstrom, J. & Havunen, J., 14 Feb 2019, 2018 IEEE International Conference on High Voltage Engineering and Application: ICHVE 2018. IEEE Institute of Electrical and Electronic Engineers, 8642188. (International Conference on High Voltage Engineering and Application).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Future photometry based on solid-state lighting products

Poikonen, T., Pulli, T., Kokka, A., Askola, J., Dönsberg, T., Smid, M., Kliment, P., Pons, A., Ferrero, A., Kübarsepp, T., Gál, P., Gerloff, T., Sperling, A., Källberg, S., Dekker, P., Thorseth, A., Jost, S., Klej, A., Brida, G., Reiners, T. & 3 others, Blattner, P., Ludwig, K. & Schneider, M., 15 Jul 2019, Proceedings of the 29th CIE SESSION Washington D.C., USA, June 14 – 22, 2019. CIE International Commission on Illumination, p. 719 724 p. (CIE Publication; No. CIE x046:2019).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Open Access

Harmonic Power Standard of VTT MIKES

Lehtonen, T. A., 1 Jun 2019, In : IEEE Transactions on Instrumentation and Measurement. 68, 6, p. 2047-2052 6 p., 8556073.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Initial Results from the MIKES-Metsahovi Time and Frequency Link for the VGOS Radio Telescope

Molera Calvés, G., Wallin, A., Näränen, J. & Fordell, T., Aug 2019, International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings. Armstrong, K. L., Baver, K. D. & Behrend, D. (eds.). p. 50-53 (NASA Conference Publication (CP); No. NASA/CP–2019-219039).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Intercomparison of reference measuring systems for lightning impulses between three National Metrology Institutes

Meisner, J., Elg, A. P., Hallstrom, J., Passon, S., Havunen, J., Bergman, A. & Nordlund, M., 14 Feb 2019, 2018 IEEE International Conference on High Voltage Engineering and Application: ICHVE 2018. IEEE Institute of Electrical and Electronic Engineers, 8642002. (International Conference on High Voltage Engineering and Application).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Measuring Losses of an Air-Core Shunt Reactor with an Advanced Loss Measuring System

Havunen, J., Suomalainen, E-P., Tornberg, J., Hällström, J., Lehtonen, T. & Merviö, A., 2019, 21st International Symposium on High Voltage Engineering, ISH2019. 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access

Metrology for very fast current transients

Passon, S., Havunen, J., Meisner, J. & Kurrat, M., 13 Feb 2019, 2018 IEEE International Conference on High Voltage Engineering and Application: ICHVE 2018. IEEE Institute of Electrical and Electronic Engineers, 4 p. 8641787. (International Conference on High Voltage Engineering and Application).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Photoacoustic optical frequency comb spectroscopy of radioactive methane in the mid-infrared region

Karhu, J., Tomberg, T., Vieira, F. S., Genoud, G., Hanninen, V., Vainio, M., Metsälä, M., Hieta, T., Bell, S. & Halonen, L., Jun 2019, 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. IEEE Institute of Electrical and Electronic Engineers, 8872587

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Precision Calibration System for Partial Discharge Calibrators

Havunen, J. & Hällström, J., 8 Aug 2019, Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. p. 6-9 (Proceedings of the Nordic Insulation Symposium, Vol. 26).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access

Software Defined Radio Based Phase Meterfor Frequency Metrology

Hanhijärvi, K. & Wallin, A., 2019, XXXV Finnish URSI Convention on Radio Science: Programme and Proceedings. International Union of Radio Science URSI, 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
File
11 Downloads (Pure)

Traceable measurement of transmitted overvoltages in instrument transformers

Elg, A-P., Garnacho, F., Garcia, T., Rovira, J., Hällström, J. & Nieminen, T., Dec 2019, In : CIGRE Science and Engineering. 16, p. 58-63 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
File
21 Downloads (Pure)

Validation of the fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres

Kokka, A., Pulli, T., Ferrero, A., Dekker, P., Thorseth, A., Kliment, P., Klej, A., Gerloff, T., Ludwig, K., Poikonen, T. & Ikonen, E., 18 Jun 2019, In : Metrologia. 56, 4, 045002.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2018

An optical atomic clock using a single 171Yb+ ion with a characterisation of thermal systematic effects

Baynham, C., Curtis, E. A., Godun, R. M., Jones, J. M., Nisbet-Jones, P. B. R., Baird, P. E. G., Gill, P., Fordell, T. & Lindvall, T., 1 Jul 2018, Book of abstracts of the 50th Anniversary EGAS conference. p. 81 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Application of Charge-Sensitive Preamplifier for the Calibration of Partial Discharge Calibrators Below 1 pC

Havunen, J. & Hällström, J., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p. 643

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

A Simple High-Performance Remote-Maser Concept

Fordell, T. & Wallin, A., 2018, 2018 European Frequency and Time Forum (EFTF): Abstracts. p. 143

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Comparison of Sampling Voltage Measurements of Multi-Tone Signals

Sira, M., Diaz De Aguilar, J., Öztürk, T., Lee, J., Behr, R. & Nissilä, J., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Development of white LED illuminants for colorimetry and recommendation of white LED reference spectrum for photometry

Kokka, A., Poikonen, T., Blattner, P., Jost, S., Ferrero, A., Pulli, T., Ngo, M., Thorseth, A., Gerloff, T., Dekker, P., Stuker, F., Klej, A., Ludwig, K., Schneider, M., Reiners, T. & Ikonen, E., 28 Jun 2018, In : Metrologia. 55, 4, p. 526-534 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Driving a Josephson Junction Array with a Mode-Locked Laser and a Photodiode

Nissilä, J., Fordell, T., Kieler, O. & Behr, R., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Effect of Coaxial Cables on Measurements Performed with Resistive Lightning Impulse Voltage Dividers

Havunen, J., Passon, S., Hällström, J. & Bergman, A., 19 Oct 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p. 8501140

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Experience with Current Transformer Calibration System Based on Rogowski Coil

Suomalainen, E-P. & Hällström, J., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Fabrication and Studies of Silicide-Based Superconducting Nanowires

Lehtinen, J., Mykkänen, E., Kemppinen, A., Prunnila, M. & Manninen, A., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Hajautetut vikasietoiset kelloverkot

Translated title of the contribution: Distributed fault-tolerant clock networksWallin, A., Lindvall, T. & Hanhijärvi, K., 2018, 12 p. (Maanpuolustuksen tieteellinen neuvottelukunta. Raporttisarja B).

Research output: Book/ReportReport

Open Access

Harmonic Power Standard of VTT MIKES

Lehtonen, T., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Improved systematic and random errors for long-distance time-transfer using PTP White Rabbit

Wallin, A., Rizzi, M., Calvés, G. M., Fordell, T. & Näränen, J., 2018.

Research output: Contribution to conferenceConference AbstractScientificpeer-review

Methods for Electrical Cooling and Thermometry of a Suspended Silicon Chip

Kemppinen, A., Mykkänen, E., Lehtinen, J., Shchepetov, A., Timofeev, A., Gunnarsson, D., Grönberg, L., Manninen, A. & Prunnila, M., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Multiple transfer standard for calibration and characterization of test setups for LED lamps and luminaires in industry

Sperling, A., Meyer, M., Pendsa, S., Jordan, W., Poikonen, T., Renoux, D. & Blattner, P., 2 Feb 2018, In : Metrologia. 55, 2, p. S37-S42

Research output: Contribution to journalArticleScientificpeer-review

Relationships between junction temperature, electroluminescence spectrum and ageing of light-emitting diodes

Vaskuri, A., Kärhä, P., Baumgartner, H., Kantamaa, O., Pulli, T., Poikonen, T. & Ikonen, E., 15 Mar 2018, In : Metrologia. 55, 2, p. S86-S95

Research output: Contribution to journalArticleScientificpeer-review

Open Access
18 Citations (Scopus)

Results of an International Comparison of Instrument Current Transformers up to 10 kA at 50 Hz Frequency

Draxler, K., Styblíková, R., Hlavacek, J., Rietveld, G., van den Brom, H. E., Schnaitt, M., Waldmann, W., Dimitrov, E., Cincar-Vujovic, T., Paczek, B., Sadkowski, G., Crotti, G., Martin, R., Garnacho, F., Blanc, I., Kämpfer, R., Mester, C., Wheaton, A., Mohns, E., Bergman, A. & 4 others, Hammarquist, M., Çayci, H., Hällström, J. & Suomalainen, E-P., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. IEEE Institute of Electrical and Electronic Engineers, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Superconducting MoSi nanowires

Lehtinen, J. S., Kemppinen, A., Mykkänen, E., Prunnila, M. & Manninen, A. J., 1 Jan 2018, In : Superconductor Science and Technology. 31, 1, 015002.

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Towards distributed fault-tolerant timekeeping based on a WR-network

Wallin, A., 2018.

Research output: Contribution to conferenceConference AbstractScientific

2017

Bilateral international inductance comparison using traveling standards in thermoregulated enclosures

Funck, T., Bothe, H., Kölling, A., Satrapinski, A. & Suomalainen, E. P., 1 Jun 2017, In : IEEE Transactions on Instrumentation and Measurement. 66, 6, p. 1511-1515 5 p., 7801843.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Blackbody Radiation Shifts for 171Yb+ Optical Clock Transitions

Baynham, C. F. A., Curtis, E. A., Godun, R. M., Jones, J. M., Nisbet-Jones, P. B. R., Gill, P., Fordell, T., Hieta, T. & Lindvall, T., 2017. 2 p.

Research output: Contribution to conferenceConference articleScientific

Open Access

Characterizing superconducting filters using residual microwave background

Lehtinen, J. S., Mykkänen, E., Kemppinen, A., Lotkhov, S., Golubev, D. & Manninen, A., 2017, In : Superconductor Science and Technology. 30, 5, 10 p., 055006.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Charcterization of a Fast Step Generator

Bergman, A., Nordlund, M., Elg, A-P., Meisner, J., Passon, S., Hällström, J. & Lehtonen, T., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Controlling single microwave photons: A new frontier in microwave engineering

Lindström, T., Lake, R., Pashkin, Y. A. & Manninen, A., 2017, In : Microwave journal. 60, 5, p. 118-130

Research output: Contribution to journalArticleScientificpeer-review

Defining the Robust Timing Service for Future EGNSS

Dierikx, E., Bauernfeind, R., Wallin, A., Özel, F., Zelle, H. & Kirkko-Jaakkola, M., 2017.

Research output: Contribution to conferenceConference articleScientific

Demonstrator of Time Services based on European GNSS signals: The H2020 DEMETRA Project

Defraigne, P., Tavella, P., Sesia, I., Cerretto, G., Signorile, G., Calonico, D., Costa, R., Clivati, C., Cantoni, E., De Stefano, C., Frittelli, M., Formichella, V., Biserni, E., Leone, V., Zarroli, E., Sormani, D., Gandara, M., Hamoniaux, V., Varriale, E., Morante, Q. & 17 others, Widomski, T., Kaczmarek, J., Uzycki, J., Borgulski, K., Olbrysz, P., Kowalski, J., Cernigliaro, A., Fiasca, F., Perucca, A., Dhiri, V., Veiga, M. T., Suárez, T., Diaz, J., Mangiantini, M., Wallin, A. E., Galleani, L. & Hindley, D., 1 Jan 2017, Proceedings of the 48th Annual Precise Time and Time Interval Systems and Applications Meeting, PTTI 2017. p. 127-137 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1 Citation (Scopus)

Design and performance of a fast divider for puncture testing

Hällström, J., Kazmi, S., Havunen, J. & Pykälä, M-L., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review