Heli Jantunen

Professor
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Education:

Dr. Tech. (Electrical Engineering), with honours, 2001
M. Sc. (Electrical Engineering), 1989
Diploma in Education, 1985
M. Sc. (Astronomy and Physics), 1982.

Address:
Microelectronics and Materials Physics Laboratories,
University of Oulu
P.O. Box 4500
FIN-90014 UNIVERSITY OF OULU
FINLAND
 
Phone:
+358-(0)8-5532740 (work)
+358-(0)40-5120861 (mobile)
 
Email:
forename.surname@ee.oulu.fi

Fax:
+358-(0)8-5532728
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Research interests:

•    Development of electroceramics through modification of their microstructures
•    Electrical, microwave and microstructural characterization methods
•    Multifunctional packages through co-firing of different types of electroceramics
•    LTCC technology and tape casting process
•    Design of multilayer RF devices
•    Dielectric materials for microwave applications
•    Ferroelectric, ferromagnetic, piezoelectric and varistor ceramics
 
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Memberships:

•    TUTKAS – Association of Academic Scientists and Members of Parliament (2004-)
•    SPIE—The International Society for Optical Engineering (2003-)
•    The Finnish Society for Future Studies (2002-)
•    IEEE (Institute of Electrical and Electronics Engineering) (2002-)
•    The American Ceramic Society (2002-)
•    IMAPS (International Microelectronics and Packaging Society) (2001-)
 
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Other academic merits and activites:

Head of the EMPART research group (Electronic Materials, Packaging and Reliability Techniques) of Infotech Oulu, University of Oulu (9.6.2004-).

Chair and invited speaker of the “Microwave Integrated Circuits design and Tecnology” –session in the the 11th International Student Seminar on Microwave Applications of Novel Physical Phenomena, St. Petersburg, Russia, 7-9 June 2004.

Chair of the “Microwave Dielectrics: Relationships of Structure-Properties-Processing II” - session in the 106th Annual Meeting & Exposition of The American Ceramic Society, Indianapolis, IN., USA, April 2004.

Member of the international scientific committee of the 3rd conference “Microwave Materials and Their Applications (MMA) 2004” in Japan, 2003-2004.

Member of the steering committee of “Future Electronics” (TULE) of the Academy of Finland, 2003-2006.

Speaker in “Natural and Technical Sciences create future”  -seminar arranged by Tutkas (association of academic scientists and Members of Parliament) and Academy of Finland, Finland, 12.11.2003.

Speaker in “Columns and Hard Science – Outlooks for publication culture and follow-up of publications” –seminar arranged by Council of Sciences and ethics group, University of Oulu, Finland, 11.11.2003.

Chair of the “Electromagnetic Theory” session in XXVII Convention of Radio Science & IV Finnish Wireless Communication Workshop, Finland, 2003.

Member of URSI Technical Progress Committee of XXVII Convention of Radio Science & IV Finnish Wireless Communication Workshop, Finland, 2003.

Invited lecturer at the 5th International Meeting of Pacific Rim Ceramic Societies, Nagoya, Japan, September 2003.

Invited lecturer at the 105th Annual Meeting & Exposition of The American Ceramic Society, Nashville, Tenn., USA, April 2003.

Invited lecturer at the MMA conference (Microwave Materials and their Applications), York, UK, September 2002.

Reviewer of the Journal of the American Ceramic Society (2001-), Materials Research Bulleting (2003-) and the Journal of the European Ceramic Society (2004-).
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 Previous professional appointments:
 
•    Chief assistant in the University of Oulu, Microelectronics and Materials Physics Laboratories (1.1.-31.3.2004).

•    Postdoc position in the Graduate School in Electronics, Telecommunications and Automations (GETA) (1.9.2002-31.8.2003).

•    Researcher and Project Manager in the University of Oulu, Microelectronics and Materials Physics Laboratories (1999-2002) with a main interest in LTCC materials and devices and microwave applications.

•    Managing Director and founder in Verdera Oy (1993-1998) with main interests in financial and personal management, business contracts, leading of research projects (ceramics for RF filters and their production techniques) and management of production. Verdera Oy was sold in 1997 to ADC Solitra Oy (mainly owned by a public company ADC telecommunications Inc., USA).

•    Research Engineer and Project Manager in LK-Products Oy (1988-1993) in charge of a group working on research, design, prototyping and building of the first production line and starting the production of ceramic RF filters.

•    Various teaching posts in the University of Oulu, Faculty of Natural Sciences, mainly in the Department of Astronomy (1980-1987), as a supervisor of exercises and a lecturer.

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Latest publications:

1. T. Kangasvieri, H. Jantunen and J Vähäkangas: Cost-Efficient Design of 3D Integrated RF and Microwave Modules for Wireless Communication Systems, ECW Conference (European Microwave Week), Amsterdam, Netherlands, 11-15 Oct., 2004. (accepted)

2. T. Hu, A. Uusimäki, T. Price, D. Iddles and H. Jantunen: The effect of manganese on the microstructure and properties of BaSrTiO₃ with B₂O₃-Li₂CO₃ addition, in co-operation with Comtek, Ltd., UK, oral presentation in the ElectroCeramics, Cherbourg, France, June 2004. Related paper submitted to the J. Euro. Ceram. Soc. 04/2004.

3.  Deleniv, S. Gevorgian, H. Jantunen and T. Hu: Microwave Characterization of Ferroelectric Films in the X-band, in cooperation with the Chalmers University of Technology and Ericsson AB, Sweden, ECW Conference (European Microwave Week), Amsterdam, Netherlands, 11-15 Oct., 2004. (accepted)
 
4. H. Jantunen, T. Hu, A. Uusimäki, S. Leppävuori: Ferroelectric LTCC for multilayer devices, J. Ceram. Soc. Jap., 1305 [1129] , S1552-S1556, 2004.

5. T. Hu, H. Jantunen, A. Deleniv, S. Leppävuori and S. Gevorgian, Electric-field-controlled premittivity ferroelectric composition for microwave LTCC modules, in cooperation with the Chalmers University of Technology and Ericsson AB, Sweden, J. Amer. Ceram. Soc., 87 [4] 578-583, 2004.

6. T. Hu, A. Uusimäki, H. Jantunen, S. Leppävuori, K. Soponmanee and S. Sirisoonthorn: Optimization of MgTiO₃-CaTiO₃ based LTCC tapes containing B2O3 for use in microwave applications, in co-operation with the National Metal and Materials Technology Center, Bangkok, Thailand, Ceramics International, 2003. (in press)

7. H. Jantunen, T. Kangasvieri, J. Vähäkangas and S. Leppävuori: Design aspects of microwave components with LTCC technique, J. Euro. Ceram. Soc., 23, 2541-2548, 2003.

9. H. Jantunen, H. Tao, A. Uusimäki, S. Leppävuori: Tape casting realization of certain ferroelectric, dielectric, piezoelectric and ferroelectric materials, J. Euro. Ceram. Soc., 24, 1077-1081, 2004.

10. A. E. Pap, K. Kordás, H. Jantunen, S. Leppävuori: Copper plating on and electrical investigation of a low-permittivity cycloolefin-copolymer, Polymer Testing, 22, 657-661, 2003.

11. T. Hu, H. Jantunen, A. Uusimäki, S. Leppävuori: BST powder with sol-gel process in tape casting and firing,  J. Euro. Ceram. Soc., 24, 1111-1116, 2004.

12. T. Hu, H. Jantunen, A. Uusimäki, S. Leppävuori: Ba_0.7Sr_0.3TiO₃ powders with B₂O₃ addition prepared by sol-gel method for microwave applications, Material Science in Semiconductor Processing, 5, 215-221, 2003.

13.  H. Jantunen, S. Leppävuori, A. Turunen and A. Uusimäki: Multilayer resonators and a bandpass filter fabricated from a novel Low-Temperature Co-fired Ceramic (LTCC), J. Electronic Materials, 31 [3] 191-195, 2002.

14. H. Jantunen, A. Uusimäki, R. Rautioaho and S. Leppävuori: Effect of processing route on thermomechanical properties of low temperature firing ceramic for electronic packaging, Brit.Ceram.Trans.,101[1]22-24,2002.
 
15. H. Jantunen, A. Uusimäki, R. Rautioaho and S. Leppävuori: Temperature coefficient of microwave resonance frequency of a Low-Temperature Cofired Ceramic (LTCC) system, J. Amer. Ceram. Soc., 85 [3] 697-699, 2002.

16. H. Jantunen, R. Rautioaho, A. Uusimäki and S. Leppävuori: Preparing low loss LTCC material without glass addition, J. Amer. Ceram. Soc., 83 [11] 2855-2857, 2000.

17. H. Jantunen, R. Rautioaho, A. Uusimäki and S. Leppävuori: Compositions of MgTiO₃ - CaTiO₃ ceramic with two borosilicate glasses for LTCC technology, J. Euro. Ceram. Soc., 20, 2331-2336, 2000.
 
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Patents:

1.      US5923233 H. Jantunen & A. Turunen: Resonator resonant frequency tuning, 1999.
2.      US5760665 A. Turunen & H. Jantunen: Stripline resonator structure formed on upper and    lateral surfaces of substrate projections, 1998.
3.      US5734306 H. Jantunen & A. Turunen: Coaxial resonator and filter having a module block construction, 1998.
4.      US5781088 A. Turunen & H. Jantunen: Lumped-constant resonator structure and method for adjusting it, 1998.
5.      US5541560 A. Turunen & H. Jantunen: Selectable bandstop/bandpass filter with switches selecting the resonator coupling, 1996.
6.      US5543764 A. Turunen & H. Jantunen: Filter having an electromagnetically tunable transmission zero, 1996.
7.      FI962117 A. Turunen & H. Jantunen: Method for connecting a radio transmitter and a radio receiver to the same antenna, and a transceiver            arrangement, 1996.
8.      US5408206 A. Turunen & H. Jantunen: Resonator structure having a stripline and groove serving as transmission line resonators, 1995.
9.      US5302924 H. Jantunen & A. Turunen: Temperature compensated dielectric filter, 1994.
10.    FI934827 A. Turunen & H. Jantunen: Stripline resonator structure, 1993.
11.    FI930944 A. Turunen & H. Jantunen: Filter, 1993.
12.    FI933365 A. Turunen & H. Jantunen: Resonator structure, 1993.
13.    FI933364 H. Jantunen & A. Turunen: Electrical filter, 1993.

Several other Finnish and foreign patents, e.g. CA2116367, EP0799505, WO9619842, WO9509453, EP0727101, CN1132571, AU7616294, etc.

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 Last update: 15.07.2004