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Jonas Ekman
Jonas Ekman

Jonas Ekman

Professor tillika ämnesföreträdare, Professor
Luleå tekniska universitet
Institutionen för system- och rymdteknik
A2313a Luleå

I'm Professor at the Department of Computer Science, Electrical and Space Engineering performing research on electromagnetic modeling. In this area, we have been working with developing the Partial Element Equivalent Circuit (PEEC) method since 1999. Our main academic partner is University of L'Aquila (IT). We have performed a multitude of projects in the areas of:

  • power systems,
  • antenna systems,
  • device modeling etc.

For futher information on my work, please browse through the publications below, look at the presentation (here), and contact me for further discussions.

From 2009, I was Head of the Computer Science and Electrical Engineering Department, then from 2011 for the Computer Science, Electrical and Space Engineering Department. Since 2023, I am chair for Electronic Systems. 


  • EMC Technology, E7031E (link to course page)
  • High Frequency Electronic Systems (PhD course)
  • Basic and advanced PEEC modeling (PhD courses)


Graduated Phd students:

  1. Maria De Lauretis, Multiconductor transmission lines wideband modeling: A delay-rational Green’s-function-based method, LTU November 2018. ISBN (print): 978-91-7790-214-0.
  2. Andreas Hartman, Electromagnetic Modeling with Complex Dielectrics: A Partial Element Equivalent Circuit Approach, LTU March 2019. ISBN (print): 978-91-7790-302-4.
  3. Sohrab Safavi, Co-Simulation of Coupled Electromagnetic and Nonlinear Circuit Problems using the Partial Element Equivalent Circuit Method, LTU May 2014. ISBN (print) 978-91-7439-896-0. 
  4. Danesh Daroui, Efficient PEEC-based Solver for Complex Electromagnetic Problems in Power Electronics, LTU Jan. 2013. ISBN (print) 978-91-7439-527-3.
  5. Tore Lindgren, Characterization problems in radio measurement systems, LTU Dec. 2009. ISBN (print) 978-91-7439-034-6. 

Research projects (running)

2018. Vetenskapsrådet/Swedish Research Counciil project on "Advanced skin effect models for future 3D wide bandgap power modules". More info at SweCRIS: https://www.swecris.se/betasearch/details/project/201805252VR

Research projects (finalized)

2013. Swedish national grid. Research project on modeling drives in energy production plants.

2010 Elforsk. Research projects on Equivalent circuit based solver for electromagnetic analysis of power electronic systems - Application to busbar and IGBT modules. 

2008. Volvo CE. Research project on EMC/EMI in Hybrid Vehicles.

2005. Vetenskapsrådet/Swedish Research Council. International PostDoc: Development of Stability Conditions for Full Wave Integral Equation based Electro-magnetic Solver. Ref. nr. 623-2004-2969. 

2005. Elforsk. Research project on A New Method for Combined Electric and Electromagnetic Modeling of Power Distribution Systems.


Artikel i tidskrift

Pulsed electromagnetic field coupling to a transmission line with arbitrary loads—A unified methodology based on reciprocity (2024)

Štumpf. M, Antonini. G, Ekman. J
Electric power systems research, Vol. 227, nr. Part A
Artikel i tidskrift

Pulsed Electromagnetic Excitation of a Thin Wire – an Approximate Numerical Model Based on the Cagniard-DeHoop Method of Moments (2023)

Štumpf. M, Antonini. G, Ekman. J
IEEE Antennas and Wireless Propagation Letters
Artikel i tidskrift

Pulsed Electromagnetic Plane-Wave Interaction With a Time-Varying, Thin High-Dielectric Layer (2023)

Štumpf. M, Antonini. G, Ekman. J
IEEE Transactions on Antennas and Propagation, Vol. 71, nr. 7, s. 6255-6259
Artikel i tidskrift

Pulsed Wave Propagation Along a Transmission Line With Time-Varying Wavespeed (2023)

Štumpf. M, Loreto. F, Antonini. G, Ekman. J
IEEE Microwave and Wireless Technology Letters, Vol. 33, nr. 7, s. 963-966
Artikel i tidskrift

Transient Electromagnetic Plane Wave Scattering by a Time-Varying Metasurface: A Time-Domain Approach Based on Reciprocity (2023)

Štumpf. M, Antonini. G, Ekman. J
IEEE Journal on Multiscale and Multiphysics Computational Techniques, Vol. 8, s. 217-224