Electrical and Information Technology

Faculty of Engineering LTH | Lund University

Research

Gerhard Kristensson, Professor emeritus

Research profile and interest

  • Scattering of electromagnetic waves
  • Electromagnetic wave propagation in inhomogeneous and random media
  • Electromagnetic wave propagation in periodic structures
  • Inverse scattering and source problems
  • Propagation of electromagnetic waves in dispersive anisotropic and bi-anisotropic media
  • Radome design problems
  • Homogenization of complex materials

Official scientific committees

  • 1991-2014, Board member of SNRV (Swedish National Committee of Radio Science)
  • 1992-1994, Deputy Chairman in the Swedish Physics Society, Mathematical Physics Section
  • 1994-2005, Official delegate of SNRV (Swedish National Committee of Radio Science) for Commission B
  • 1994-2005, Chairman of Commission B of SNRV (Swedish National Committee of Radio Science)
  • 1997-2005, Chairman of the Ad hoc group on Computational Electromagnetics in Sweden
  • 2000-2005, Deputy chairman of SNRV (Swedish National Committee of Radio Science)
  • 2002-, Member of the Commission B Technical Advisory Board (B-TAB) of URSI Commission B
  • 2003-2006, Member of the Ad hoc group meeting on the future format of the RVK conferences
  • 2006-2014, Chairman of SNRV (Swedish National Committee of Radio Science)
  • 2006-2014, Official Swedish delegate of URSI (Swedish National Committee of Radio Science)
  • 2007-2009, Member of the Steering group of Academy Southeast (Styrgruppen för Akademi Sydost)
  • 2008-, Member of the Kungl. Fysiografiska Sällskapet i Lund
  • 2009-2014, Board member of the IEEE MTT/AP Chapter of Sweden
  • 2011-2014, Convener of the Section of Applied Sciences, Kungl. Fysiografiska Sällskapet i Lund
  • 2011-2016, Board member of the Kungl. Fysiografiska Sällskapet i Lund
  • 2017-, Member of Göran Lind Committee (Kungl. Fysiografiska Sällskapet i Lund)
  • Member of 2018 Van de Hulst Award Committee
  • Member of 2020 Van de Hulst Award Committee
  • Member of 2022 Van de Hulst Award Committee

Editor commissions

  • 1990-1991, Proceeding of the AMS/SIAM conference in Albuquerque, New Mexico, USA, Invariant Imbedding and Inverse Problems In Memory of Bob Krueger, SIAM publication
  • 1993-1996, Member of the Editorial Board of the international journal Inverse Problems (max 3 years)
  • 1997-2007, Member of the International Advisory Panel of the international journal Inverse Problems (max 10 years)
  • 1994-2014, Member of the Board of Editors of the international journal Wave Motion
  • 1995-2000, Member of the Editorial and Review Board of the international journal Journal of Electromagnetic Waves and Applications and the publication series Progress in Electromagnetic Research
  • 1998, Editor of the Conference Proceedings of the conference EMB 98, Elektromagnetiska beräkningar för design och analys av komplexa system, Linköping, November 17-18, 1998
  • 2001, Editor of the Conference Proceedings of the conference EMB 01, Electromagnetic Computations - Methods and Applications, Uppsala, November 14-15, 2001
  • 2007, Editor of the Conference Proceedings of the conference EMB 07, Electromagnetic Computations - Methods and Applications, Lund, October 18-19, 2007
  • 2007, Editor of the Jubilee book, SNRV 75 år,  2008

Conference organizer

  • Member of the Local Organizing Committee of URSI International Symposium on Electromagnetic Theory, Stockholm, Sweden, August 14-17, 1989
  • Organizer of a mini-symposium at ICIAM 91 conference in Washington DC, USA, July 8-12, 1991, Session Program: Time Domain Techniques for Inverse Scattering Problems
  • Member of the Scientific Committee of RVK93, Lund, Sweden, April 5-7, 1993
  • Member of the Scientific Committee of CHIRAL'94, Perigueux, France, May 18-20, 1994
  • Chairman of the organizing committee of the international workshop Multidimensional inversion techniques using wave splitting and invariant imbedding in Mölle, Sweden, June 29-July 1, 1995
  • Member of the reference group of the Conference Antenn97, Göteborg, Sweden, May 27-29, 1997
  • Scientific Advisory Committee, BIANISOTROPICS'98, International Conference on Complex Media, Technische Universität Braunschweig Braunschweig, Germany, June 3-6, 1998
  • Chairman of the Technical Program Committee of the conference EMB 98, Elektromagnetiska beräkningar för design och analys av komplexa system, Linköping, November 17-18, 1998
  • Member of the Technical Program Committee of the conference RVK 99, Karlskrona, June
    14-18, 1999
  • Convener and organizer of the session Electromagnetic theory at the XXVIth General Assembly of the URSI, Toronto, Canada, August 13-21, 1999
  • Member of the program committee of the NRS symposium, Lund, Antennen och dess omvärld, kopplingen mellan antenn och radiosystem, November 9-10, 1999
  • Scientific advisory committee, Bianisotropics 2000, 8th International Conference on Electromagnetics of Complex Media, Technical University of Lisbon, Portugal, September 27-29, 2000
  • Chairman of the Technical Program Committee of the conference EMB 01, Electromagnetic Computations - Methods and Applications, Uppsala, November 14-15, 2001
  • Member of the program committee of the GHz 2001, Lund, November 26-27, 2001
  • Member of the Technical Program Committee of the conference RVK 02, Stockholm, June 10-13, 2002
  • Convener and organizer of the session Inverse scattering and imaging at the XXVIIth General Assembly of the URSI, Maastricht, The Netherlands, August 17-24, 2002
  • Member of the Technical Program Committee of the conference Antenn 03, Kalmar, May 13-15, 2003
  • Member of the Technical Program Committee (TPC) of the 2004 URSI Commission B Electromagnetic Theory Symposium (EMT-S), Pisa, Italy, May 23-27, 2004
  • Convener and organizer of the session Homogenization of Electromagnetic Material Parameters at the 2004 URSI Commission B Electromagnetic Theory Symposium (EMT-S), Pisa, Italy, May 23-27, 2004
  • Chairman of the Technical Program Committee of the conference EMB 04, Computational Electromagnetics - Methods and Applications, Göteborg, October 18-19, 2004
  • Convener and organizer of the session Antennas for wireless systems and mobile - 2 at the XXVIIIth URSI General Assembly, New Delhi, India, October 23-29,  2005
  • Chairman of the Local Committee of the conference EMB 07, Computational Electromagnetics - Methods and Applications, Lund, October 18-19, 2007
  • Board of the Organizing Committee of the conference RVK 08, Växjö, June 9-11, 2008
  • Convener and organizer of the session Electromagnetic Theory at the XXIXth URSI General Assembly Chicago, USA, August 9-16,  2008
  • Convener and organizer of the session Analytic identities and limitations in electromagnetic theory at the 2010 URSI Commission B Electromagnetic Theory Symposium (EMT-S), Berlin, Germany, August 16-19, 2010
  • Convener and organizer of the session Complex Media at the 2010 URSI Commission B Electromagnetic Theory Symposium (EMT-S), Berlin, Germany, August 16-19, 2010
  • Member of the Organizing Committee of the XXXth URSI URSI General Assembly and Scientific Symposium, Istanbul, Turkey, August 13-20,  2011
  • Member of the Scientific Program Committee (Commission B) of the XXXth URSI General Assembly and Scientific Symposium, Istanbul, Turkey, August 13-20,  2011
  • Convener and organizer of the session Electromagnetic Theory at the XXXth URSI General Assembly and Scientific Symposium, Istanbul, Turkey, August 13-20,  2011
  • Member of the International Advisory Board at the 2013 URSI Commission B International Symposium on Electromagnetic Theory (EMTS 2013), Hiroshima, Japan, May 20-24, 2013
  • Member of the Subcommittee 1 (CEM, EMC, Scattering and Electromagnetic Theory) at the Progress In Electromagnetics Research Symposium (PIERS 2013), Stockholm, Sweden, August 12-15, 2013
  • Convener and organizer of the session Electromagnetic Theory at the XXXIth URSI General Assembly and Scientific Symposium, Bejing, China, August 16-23,  2014
  • Member of the Scientific Program Committee of the 17th Electromagnetic and Light Scattering Conference (ELS-XVII), Texas A&M University, College Station, USA, March 4-9, 2018
  • Member of the Scientific Program Committee of the 18th Electromagnetic and Light Scattering Conference (ELS-XVIII), Zhejiang University, Hangzhou, China, June 10–14, 2019
  • Member of the Scientific Program Committee of the 19th Electromagnetic and Light Scattering Conference (ELS-XIX), Online July 12–16, 2021

Examination of Licentiate thesis

  1. 1992, Sten Rikte. Title of the thesis: Propagation of transient electromagnetic waves in dispersive reciprocal bi-isotropic media
  2. 1993, Jonas Fridén. Title of the thesis: Time Domain Formulation of Direct and Inverse Electromagnetic Scattering for Anisotropic Media
  3. 1995, Ingegerd Åberg. Title of the thesis: Time domain solutions to direct and inverse scattering problems in non-stationary media
  4. 1996, Igor Egorov. Title of the thesis: Transient electromagnetic wave propagation in laterally discontinuous, dispersive media
  5. 1998, Mats Gustafsson. Title of the thesis: Inverse electromagnetic scattering problems-a time-domain optimization approach
  6. 1999, Daniel Sjöberg. Title of the thesis: Direct and Inverse Scattering of Electromagnetic Waves in Nonlinear Media
  7. 1999, Michael Andersson. Title of the thesis: Electromagnetic modeling of materials
  8. 2000, Sören Poulsen. Title of the thesis: Scattering of electromagnetic waves from frequency selective structures
  9. 2002, Peter Waller. Title of the thesis: Patch antennas on inhomogeneous substrates for mobile terminals
  10. 2005, Christian Engström. Title of the thesis: Effective materials in electromagnetics
  11. 2007, Christian Sohl. Title of the thesis: Dispersion Relations for Extinction of Acoustic and Electromagnetic Waves
  12. 2009, Vanja Plicanic. Title of the thesis: Performance characterization of compact multiple antenn terminals
  13. 2010, Kristin Persson. Title of the thesis: Retrieval of equivalent currents by the use of an integral representation and the extinction theorem - radome applications
  14. 2010, Anders Bernland, (as Co-Supervisor). Title of the thesis: Sum Rules and Constraints on Passive Systems - a General Approach and Applications to Electromagnetic Scattering
  15. 2011, Peter Johannesson, (as Co-Supervisor). Title of the thesis: A numerical hybrid method for microwave applications, based on hierarchial basis functions
  16. 2015, Magnus Gustavsson. Title of the thesis: Methods of calculating and measuring the scattered electromagnetic field by rough surfaces and random scatterers

Examination of PhD thesis

  1. 1991, Jonas Björkberg. Title of the thesis: The Null-Field Approach to Elliptic Disks: Theory and Applications to Electromagnetic Prospecting
  2. 1991, Tommy Andersson. Title of the thesis: Electromagnetic scattering by thin objects-Method of Moment calculations with singular basis functions
  3. 1995, Sten Rikte. Title of the thesis: Propagation of transient electromagnetic waves in stratified bi-isotropic media and related inverse scattering problems
  4. 1996, Jonas Fridén. Title of the thesis: Bartholinian Pleasures, Time Domain Direct and Inverse Electromagnetic Scattering for Dispersive Anisotropic Media
  5. 1997, Ingegerd Åberg. Title of the thesis: Transient waves in nonstationary media with applications to lightning and nonlinear media
  6. 1998, Igor Egorov. Title of the thesis: Transient electromagnetic pulse propagation in temporally dispersive materials
  7. 2000, Mats Gustafsson. Title of the thesis:  Wave Splitting in Direct and Inverse Problems
  8. 2001, Daniel Sjöberg. Title of the thesis: Transient Electromagnetic Waves in Nonlinear Media
  9. 2003, Björn Widenberg, (as Co-Supervisor). Title of the thesis: Thick Frequency Selective Structures
  10. 2006, Christian Engström. Title of the thesis:  Effective properties of heterogeneous materials with applications in electromagnetics
  11. 2006, Sören Poulsen. Title of the thesis:  Stealth radomes
  12. 2008, Christian Sohl. Title of the thesis: Dispersion Relations in Scattering and Antenna Problems
  13. 2011, Vanja Plicanic. Title of the thesis: Characterization and Enhancement of Antenna System Performance in Compact MIMO Terminals
  14. 2012, Anders Bernland, (as Co-Supervisor). Title of the thesis: Integral Identities for Passive Systems and Spherical Waves in Scattering and Antenna Problems
  15. 2013, Kristin Persson. Title of the thesis:Radome Diagnostics: utilizing Source Reconstruction based on Surface Integral Representations
  16. 2014, Marius Cismasu, (as Co-Supervisor). Title of the thesis: Antenna Analysis and Design Using Stored Energies and Physical Limitations

External examiner for Licentiate degree

  • 1991, Licentiate examiner for Sailing He, Department of Electromagnetic Theory, Royal Institute of Technology, Stockholm. Title of the dissertation: Electromagnetic direct and inverse scattering in the time domain for a dissipative stratified medium and a point source excitation
  • 1991, Licentiate examiner for Peter Juhlin, Department of Mathematics, Lund Institute of Technology. Title of the dissertation: Studies on the Electrocardiographic Potential Problem

Faculty opponent for PhD

  • 1987, Faculty opponent for Richard Lundin, Department of Electromagnetic Theory, Lund University. Title of the thesis: A Handbook Formula for the Inductance of a Single-Layer Circular Coil and A General Power-Series Expansion Method for Exact Analysis of the Guided Modes in an Optical Fiber
  • 1990, Faculty opponent for Keijo I. Nikoskinen, Faculty of Electrical Engineering, Electromagnetics Laboratory, Helsinki University of Technology. Title of the thesis: Analytic and numerical methods in electromagnetic diffraction problems
  • 1997, Faculty opponent for Peter Meincke Johansen, Department of Electromagnetic Systems, Technical University of Denmark. Title of the thesis: Time-Domain Analysis of Electromagnetic Scattering Problems
  • 2007, Faculty opponent for Cecilia Cappellin, Ørsted·DTU, ElectroScience, Technical University of Denmark. Title of the thesis: Antenna Diagnostics for Spherical Near-Field Antenna Measurements

Examining committee for PhD

  • 1987, Member of the examining committee for Thorsten Schütte, Institute for High Voltage Research, Uppsala University. Title of the thesis: Optimum performance of lightning localization systems
  • 1989, Member of the examining committee for Wenxin Zheng, Department of Electromagnetic Theory, Royal Institute of Technology, Stockholm. Title of the thesis: The null-field approach to electromagnetic scattering and resonance properties of composite objects
  • 1990, Member of the examining committee for Jan Svedin, Department of Physics and Measurement Technology, Linköping University. Title of the thesis: Finite-Element Methods for Electromagnetic Waveguide Problems
  • 1992, Member of the examining committee for Sailing He, Department of Electromagnetic Theory, Royal Institute of Technology, Stockholm. Title of the thesis: Time Domain Direct and Inverse Scattering for Higher Dimensional Fields Propagating in Dissipative Stratified Media
  • 1992, Member of the examining committee for Sven Nordholm, Signal Processing Group, Lund Institute of Technology. Title of the thesis: Broadband Adaptive Beamforming with Applications in Acoustic Signal Processing
  • 1992, Member of the examining committee for Magnus Olsson, Department of Radiation Physics, Lund University. Title of the thesis: Magnetic Field Perturbation in Proton MR Imaging. A Study of a Contrast Agent and of Distortions due to Metallic Implants
  • 1992, Member of the examining committee for Arne Eriksson, Division of Mechanics, Chalmers University of Technology. Title of the thesis: Elastic Wave Scattering by Closed Cracks and Thin Flaws
  • 1993, Member of the examining committee for Peter Pettersson, Department of Mathematics, Lund University. Title of the thesis: WKB expansions for systems of Schrödinger operators with crossing eigenvalues
  • 1994, Member of the examining committee for Anders Holst, Department of Mathematics, Lund University. Title of the thesis: Approximation of Schrödinger Operators and Scattering Data Using Multiresolution Analysis
  • 1994, Member of the examining committee for Christian Bergljung, Department of Applied Electronics, Lund University. Title of the thesis: Diffraction of Electromagnetic Waves by Dielectric Wedges
  • 1995, Member of the examining committee for Jonas Lundstedt, Department of Electromagnetic Theory, Royal Institute of Technology. Title of the thesis: A time-domain wave-splitting approach to inverse problems on nonuniform transmission lines: signal restoration, internal source and parameter reconstruction
  • 1997, Member of the examining committee for Rasmus Hellberg, Department of Electromagnetic Theory, Royal Institute of Technology. Title of the thesis: A Time-Domain Method for the Design of Non-Reflecting Media: An Inverse Problem for Dispersive and Dissipative Plane-Stratified Media Solved by the Wave-Splitting and Green Functions Technique
  • 1997, Member of the examining committee for Zvonimir Sipus, Department of Microwave Technology, Chalmers University of Technology, Göteborg. Title of the thesis: Analysis of Planar and Circular Cylindrical Multilayer Structures with Application to Soft and Hard Surfaces
  • 1999, Member of the examining committee for Kent Stråhlén, Department of Mathematics, Lund University. Title of the thesis: Studies of Vector Tomography
  • 2001, Member of the examining committee for Torleif Martin, Department of Physics and Measurement Technology, Linköping University, Linköping. Title of the thesis: Broadband Electromagnetic Scattering and Shielding Analysis using Finite Difference Time Domain Method
  • 2001, Member of the examining committee for Lars Jonsson. Devision of Electromagnetic Theory, Department of Signals, Sensors and Systems, Royal Institute of Technology. Title of the thesis: Directional Decomposition in Anisotropic Heterogeneous Media for Acoustic and Electromagnetic Fields
  • 2001, Member of the examining committee for Robert Lagergren, Department of Mathematics, Lund University. Title of the thesis: The Back-Scattering Problem in Three Dimensions
  • 2002, Member of the examining committee for Fredrik Edelvik, Department of Information Technology, Scientific Computing, Uppsala University. Title of the thesis: Hybrid Solvers for the Maxwell Equations in the Time-Domain
  • 2003, Member of the examining committee for Jonas Ekman, Department of Computer Science and Electrical Engineering, EISLAB, Luleå  University of Technology. Title of the thesis: Electromagnetic Modeling Using the Partial Element Equivalent Circuit Method
  • 2004, Member of the examining committee for Borys Stoew, Department of Radio and Space Science, Chalmers University of Technology. Title of the thesis: Description and Analysis of Data and Error in GPS Meteorology
  • 2005, Member of the examining committee for Fredrik Andersson, Department of Mathematics, Lund University. Title of the thesis: Inverse Problems in Tomography and Fast Methods for Singular Convolutions
  • 2006, Member of the examining committee for Sandy Sefi, Department of Numerical Analysis and Computer Science (NADA), Royal Institute of Technology. Title of the thesis: Computational Electromagnetics: Software Development and High Frequency Modelling of Surface Currents on Perfect Conductors
  • 2009, Member of the examining committee for Per Jacobsson, Department of Signals and Systems, Chalmers. Title of the thesis: Shape and material optimization for antenna applications
  • 2010, Member of the examining committee for Gvidas Astromskas, Department of Physics, Lund University. Title of the thesis: Electrical characterization of integrated InAs nano-structures

Grants and contracts

  • 1983-1984, National Swedish Board for Technical Development (STU), Tolkning av elektromagnetiska mätningar med hjälp av modellberäkningar, (one of two PI's)
  • 1987-1988, National Swedish Board for Technical Development (STU), Tolkning av elektromagnetiska mätdata med hjäp av modellberäkningar avseende spridning av elektromagnetiska vågor i två- och tredimensionella strukturer, (one of two PI's)
  • 1989, Carl Tryggers Stiftelse för vetenskaplig forskning, Inverse scattering: inverse theory and experimental implementation, (one of two PI's)
  • 1989-1991, National Swedish Board for Technical Development (STUF),  Inverse scattering: inverse theory, regularization techniques and experimental implementation, (one of three PI's)
  • 1991-1993, Swedish Research Council for Engineering Sciences (TFR), Inverse scattering: theory for generic problems, regularization, numerical and experimental implementations, (one of three PI's)
  • 1993-1995, Swedish Research Council for Engineering Sciences (TFR), Inverse scattering problems in complex media, (single PI)
  • 1993-1994, The Royal Swedish Academy of Sciences (KVA), The optical wave guide design problem using time domain inverse scattering techniques, (single PI)
  • 1994-1997, Swedish Research Council for Engineering Sciences (TFR), Time domain methods for inverse problems on beams, (one of two PI's)
  • 1994-1995, Wenner-Gren Foundation, Visiting Scientist scholarship, (single PI)
  • 1994-1995, National Defence Research Establishment (FOA3), (single PI)
  • 1995, Wenner-Gren Foundation
  • 1995-1996, CEA/CESTA, Etude analytique de l'interaction d'une impulsion courte avec un materiau dispersif, (single PI)
  • 1995-2000, Swedish Research Council for Engineering Sciences (TFR), Parameter reconstruction in inhomogeneous media, (one of three PI's)
  • 1998, FMV, Försvarets Materielverk, Teknikstudier Frekvensselektiva Strukturer, (single PI)
  • 1999, FMV, Försvarets Materielverk, Teknikstudier Signaturanpassning, (single PI)
  • 1999-2000, The Royal Swedish Academy of Sciences (KVA), Transient electromagnetic wave propagation in complex media, (single PI)
  • 2000-2003, Stiftelsen för Strategisk Forskning, Antenna Analysis and Design
  • 2000, FMV, Försvarets Materielverk, Teknikstudier FSS-radomer, (single PI)
  • 2001-2002, Swedish Research Council for Engineering Sciences (TFR), Wave Splitting in Direct and Inverse Scattering Problems; Computational and Theoretical Aspects, (single PI)
  • 2001, FMV, Försvarets Materielverk, FSS-radomer. Design-studier, (single PI)
  • 2002, FMV, Försvarets Materielverk, Teknikstudier FSS och smyganpassade antenner, (single PI)
  • 2004-2005, FMV, Försvarets Materielverk, Teknikstudier signaturanpassande radomer, (single PI)
  • 2004, NFFP3, Nationellt Flygtekniskt Forskningsprogram, SkrovIntegrerad Gruppantenn för Smygande UAV (SIG-SUAV), (one of the partners in the program)
  • 2004-2007, Vinnova, Antennas, channel models, and wave propagation for future wireless networks, (one of three PI's)
  • 2006, Wenner-Gren Foundation, (single PI)
  • 2006-2008, Swedish Research Council (VR), Development of analysis and measurement techniques for electric properties of complex materials, (single PI)
  • 2006-2010, Stiftelsen för Strategisk Forskning, Next Generation High Speed Wireless Communication, (one of nine PI's)
  • 2007-2009, FMV, Försvarets Materielverk, Teknikstudier sensorteknik och mikromodellering, (single PI)
  • 2007-2008, NFFP4, Nationellt Flygtekniskt Forskningsprogram, Skrovintegrerade Gruppantenner med Låg Radarsignatur, (one of the partners in the program)
  • 2010-2012, FMV, Försvarets Materielverk, Teknikstudier Multifunktionell Perimeter och Teknikinnovativa studier, (single PI)