Publications

Articles in journals Conference papers Doctoral theses, monographs Patents

Articles in journals

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2013). High Speed (MHz) Series Resonant Converter (SRC) Using Multilayered Coreless Printed Circuit Board (PCB) Step-Down Power Transformer. IEEE transactions on power electronics, vol. 28: 3, pp. 1253-1264.

Majid, A. , Saleem, J. , Alam, F. & Bertilsson, K. (2013). EMI Suppression in High Frequency Half Bridge Converter. Elektronika ir Elektrotechnika, vol. 19: 9, pp. 75-80.

Saleem, J. , Majid, A. , Bertilsson, K. & Carlberg, T. (2013). 3 Dimensional Finite Element Simulation of Seam Welding Process. Elektronika Ir Elektrotechnika, vol. 19: 8, pp. 73-78.

Saleem, J. , Majid, A. , Bertilsson, K. , Carlberg, T. & Nazar ul islam, M. (2012). Nugget Formation During Resistance Spot Welding Using Finite Element Model. World Academy of Science, Engineering and Technology, vol. 67

Bertilsson, K. (2012). Nästa generations kompakta spänningsomvandlare. Thule, Kungl. Skytteanska Samfundets Årsbok 2012, vol. 1: 1, pp. 153-157.

Mattsson, C. , Thungström, G. , Bertilsson, K. , Nilsson, H. & Martin, H. (2009). Fabrication and characterization of a design optimized SU-8 thermopile with enhanced sensitivity. Measurement science and technology, vol. 20: 11, pp. 115202

Mattsson, C. , Bertilsson, K. , Thungström, G. , Nilsson, H. & Martin, H. (2009). Thermal simulation and design optimization of a thermopile infrared detector with SU-8 membrane. Journal of Micromechanics and Microengineering, vol. 19: 5, pp. 055016

Andersson, H. , Bertilsson, K. , Thungström, G. & Nilsson, H. (2008). Processing and Characterization of a MOS Type Tetra Lateral Position Sensitive Detector with Indium Tin Oxide Gate Contact. IEEE Sensors Journal, vol. 8: 9-10, pp. 1704-1709.

Mattsson, C. , Thungström, G. , Bertilsson, K. , Nilsson, H. & Martin, H. (2008). Design of a Micromachined Thermopile Infrared Sensor with a Self-Supported SiO2/SU-8 Membrane. IEEE Sensors Journal, vol. 8: 12, pp. 2044-2052.

Intarasiri, S. , Lu, J. , Jensen, J. , Yu, L. , Bertilsson, K. & Wolborski, M. (2006). Crystalline quality of 3C-SiC formed by high-fluence C+-implanted Si. Applied Surface Science, vol. 253: 11, pp. 4836-4842.

Mattsson, C. , Bertilsson, K. , Thungström, G. & Nilsson, H. (2004). Manufacturing and characterization of a modified four-quadrant position sensitive detector for out-door applications. Nuclear Instruments and Methods in Physics Research Section A, vol. 531: 1-2, pp. 134-139.

Bertilsson, K. & Nilsson, H. (2004). The power of using automatic device optimization, based on iterative device simulation, in design of high-performance devices. Solid-State Electronics, vol. 48: 10-11, pp. 1721-1725.

Bertilsson, K. , Harris, C. & Nilsson, H. (2004). Calculation of lattice heating in SiC RF power devices. Solid-State Electronics, vol. 48: 12, pp. 1721-1725.

Bertilsson, K. & Nilsson, H. (2002). Optimization of 2H, 4H and 6H-SiC high-speed vertical MESFETs. Diamond and related materials, vol. 11: 3-6, pp. 1254-1257.

Bertilsson, K. & Nilsson, H. (2002). Optimization of 2H, 4H and 6H-SiC MESFETs for High Frequency Applications. Physica Scripta, vol. T101, pp. 75-77.

Dubaric, E. , Bertilsson, K. & Nilsson, H. (2002). Simulations of Submicron MOSFETs in 2H, 4H and 6H-SiC. Physica Scripta, vol. T101, pp. 14-17.

Nilsson, H. , Dubaric, E. , Hjelm, M. & Bertilsson, K. (2002). Simulation of photon and charge transport in X-ray imaging semiconductor sensors. Nuclear Instruments and Methods in Physics Research Section A, vol. 487: 1-2, pp. 151-162.

Nilsson, H. , Bertilsson, K. , Hjelm, M. & Dubaric, E. (2002). Numerical Simulation of Field Effect Transistors in 4H- and 6H-SiC. Journal of Wide Bandgap Materials, vol. 9, pp. 293-305.

Hjelm, M. , Bertilsson, K. & Nilsson, H. (2001). Full Band Monte Carlo Study of Bulk and Surface Transport Properties in 4H and 6H-SiC. Applied Surface Science, vol. 184: 1-4, pp. 194-198.

Bertilsson, K. , Dubaric, E. , Thungström, G. , Nilsson, H. & Petersson, S. (2001). Simulation of a low atmospheric-noise modified four-quadrant position sensitive detector. Nuclear Instruments and Methods in Physics Research Section A, vol. 466: 1, pp. 183-187.

Bertilsson, K. , Nilsson, H. , Hjelm, M. , Petersson, S. , Käckell, P. & Persson, C. (2001). The Effect of Different Transport Models in Simulation of High Frequency 4H-SiC and 6H-SiC Vertical MESFETs. Solid-State Electronics, vol. 45: 5, pp. 645-653.

Bertilsson, K. , Dubaric, E. , Nilsson, H. , Hjelm, M. & Petersson, S. (2001). Monte Carlo simulation of vertical MESFETs in 2H, 4H and 6H-SiC. Diamond and related materials, vol. 10: 3-7, pp. 1283-1286.

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (). Design and Analysis of 45W Multi Resonant Half Bridge Converter in MHz Frequency Region using GaN HEMTs. Journal of Power Electronics (JPE),

Saleem, J. , Majid, A. , Bertilsson, K. & Carlberg, T. (). Spot welding Al 6082 Sheets with Preheating by Induction Heating Process. ,

Conference papers

Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2013). High Performance Planar Power Transformer with High Power Density in MHz Frequency Region for Next Generation Switch Mode Power Supplies. In 2013 TWENTY-EIGHTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2013. (Annual IEEE Applied Power Electronics Conference and Exposition (APEC)). pp. 2139--2143.

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2013). A 45W LLC resonant Converter in MHz Frequency Region for Laptop Adapter Application using GaN HEMTs. In PCIM Europe Conference Proceedings. Berlin : . pp. 1029--1035.

Majid, A. , Saleem, J. , Alam, F. & Bertilsson, K. (2013). Analysis of radiated EMI for power converters switching in MHz frequency range. In Proceedings - 2013 9th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED 2013.. pp. 428--432.

Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2012). Effect of Air Gap on the Performance of Hybrid Planar Power Transformer in High Frequency (MHz) Switch Mode Power Supplies (SMPS). In Proceedings of INDUCTICA 2012, Coil Winding, Insulation and Electrical Manufacturing International Conference and Exhibition (CWIEME), Berlin, Germany 26-28 June 2012.

Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2012). Effect of Dielectric Material on the Performance of Planar Power Transformers in MHz Frequency Region. In Proceedings of INDUCTICA 2012, Coil Winding, Insulation and Electrical Manufacturing International Conference and Exhibition (CWIEME), Berlin, Germany 26-28 June 2012.

Majid, A. , Saleem, J. & Bertilsson, K. (2012). EMI filter design for high frequency power converters. In 2012 11th International Conference on Environment and Electrical Engineering, EEEIC 2012 : Conference Proceedings.. pp. 586--589.

Majid, A. , Saleem, J. , Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2012). Design and implementation of EMI filter for high frequency (MHz) power converters. In IEEE International Symposium on Electromagnetic Compatibility.. pp. Art. no. 6396738-

Kotte, H. B. , Ambatipudi, R. , Haller, S. & Bertilsson, K. (2012). A ZVS Half Bridge DC-DC Converter in MHz Frequency Region using Novel Hybrid Power Transformer. In Proceedings of International Exhibition and Conference for Power Electronics, Intelligent Motion, Power Quality (PCIM) 2012, 8-10 May 2012, Nuremberg, Germany.. Berlin : . pp. 399--406.

Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2011). Radiated Emissions of Multilayered Coreless Printed Circuit Board Step-Down Power Transformers in Switch Mode Power Supplies. In 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia 2011.. pp. 960--965.

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2011). High Speed Cascode Flyback Converter Using Multilayered Coreless Printed Circuit Board (PCB) Step-Down Power Transformer. In Proceedings of 8th International Conference on Power Electronics-ECCE Asia.. pp. 1856--1862.

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2011). High Speed Series Resonant Converter (SRC) Using Multilayered Coreless Printed Circuit Board (PCB) Step-Down Power Transformer. In Proceedings of 33rd International Telecommunications Energy Conference (INTELEC 2011). Amsterdam : . pp. Art. no. 6099785-

Majid, A. , Saleem, J. , Kotte, H. B. , Ambatipudi, R. , Haller, S. & Bertilsson, K. (2011). Analysis of feedback in converter using coreless printed circuit board transformer. In Electrical Machines and Power Electronics and 2011 Electromotion Joint Conference (ACEMP), 2011 International Aegean Conference on.. pp. 601--604.

Majid, A. , Kotte, H. B. , Saleem, J. , Ambatipudi, R. , Haller, S. & Bertilsson, K. (2011). High Frequency Half-Bridge Converter using Multilayered Coreless PrintedCircuit Board Step-Down Power Transformer. In 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia.. pp. 1177--1181.

Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2011). Comparison of Two Layered and Three Layered Coreless Printed Circuit Board Step-Down Power Transformers. In 2011 INTERNATIONAL CONFERENCE ON INSTRUMENTATION, MEASUREMENT, CIRCUITS AND SYSTEMS (ICIMCS 2011), VOL 2: FUTURE COMMUNICATION AND NETWORKING. Shenzhen : . pp. 59--62.

Saleem, J. , Majid, A. , Bertilsson, K. & Schüberg, L. (2011). Study the influence of the alignment and  nearby metallic objects on the Hall sensor system for current measurement in Resistance Spot Welding Machine. In 2011 10th International Conference on Environment and Electrical Engineering, EEEIC.EU 2011 - Conference Proceedings.. pp. Art. no. 5874717-

Saleem, J. , Majid, A. , Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2011). High Frequency Full Bridge Converter using Multilayer Coreless Printed Circuit Board Step-up Power Transformer. In 2011 20th European Conference on Circuit Theory and Design, ECCTD 2011.. pp. 805--808.

Saleem, J. , Majid, A. , Haller, S. & Bertilsson, K. (2011). A study of IGBT rupture phenomenon in medium frequency resistance welding machine. In Electrical Machines and Power Electronics and 2011 Electromotion Joint Conference (ACEMP), 2011 International Aegean Conference on.. pp. 236--239.

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2010). A ZVS Flyback DC-DC Converter using Multilayered Coreless Printed Circuit Board (PCB) Step Down Power Transformer. In World Academy of Science, Engineering and technology. Paris : (World Academy of Science ,Engineering and Technology,ISSUE 70,OCTOBER 2010). pp. 148--155.

Ambatipudi, R. , Kotte, H. B. & Bertilsson, K. (2010). Coreless Printed Circuit Board (PCB) StepdownTransformers for DC-DC ConverterApplications. In PROCEEDINGS OF WORLD ACADEMY OF SCIENCE, ENGINEERING AND TECHNOLOGY, ISSUE 70, OCTOBER 2010, ISSN:1307-6892. France : (WORLD ACADEMY OF SCIENCE, ENGINEERING AND TECHNOLOGY). pp. 380--389.

Kotte, H. B. , Ambatipudi, R. & Bertilsson, K. (2010). Comparative Results of GaN and Si MOSFET in a ZVS Flyback Converter using Multilayered Coreless Printed Circuit Board Step-Down Transformer. In Proceedings of 2010 3rd International Conference on Power Electronics and Intelligent Transportation System. Shenzhen : . pp. 318--321.

Mattsson, C. , Thungström, G. , Bertilsson, K. , Nilsson, H. & Martin, H. (2008). Fabrication and evaluation of a thermal sensor formed on a thin photosensitive epoxy membrane with low thermal conductivity. In PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY. (Journal of Physics: Conference Series (Online Edition)). pp. 082048-

Mattsson, C. , Thungström, G. , Bertilsson, K. , Nilsson, H. & Martin, H. (2007). Development of an infrared thermopile detector with a thin self-supporting SU-8 membrane. In 2007 IEEE SENSORS, VOLS 1-3. New York : (IEEE Sensors). pp. 836--839.

Bertilsson, K. & Harris, C. (2007). Comparison of bipolar and unipolar SiC switching devices for very high power applications. In Silicon Carbide and Related Materials 2006. (MATERIALS SCIENCE FORUM). pp. 975--978.

O'Nils, M. , Oelmann, B. , Bertilsson, K. , Nilsson, H. & Thungström, G. (2005). A Project Based Master's Program for SoF/SoC based Sensor Systems. In Proceedings of the European Conference on Circuit Theory and Design.

Nilsson, H. , Bertilsson, K. , Dubaric, E. & Hjelm, M. (2001). Numerical simulation of field effect transistors in 4H and 6H-SiC. .

Bertilson, K. , Hjelm, M. , Nilsson, H. & Petersson, S. (2001). Monte Carlo Simulation of 4H and 6H-SiC short channel MOSFETs. In High Temperature Electronics Network. HITEN ; 4 (Oslo) : 2001.06.05-08 : Proceedings of the International Conference on High Temperature Electronics : held in Oslo, Norway, 5th - 8th June 2001. Oxford : . pp. 199-

Bertilsson, K. , Nilsson, H. & Petersson, S. (2000). Simulation of anisotropic Breakdown in 4H-SiC Diodes. In Proceedings of Computers in Power Electronics, 2000 : COMPEL 2000.. pp. 118--120.

Doctoral theses, monographs

Bertilsson, K. (2004). Simulation and Optimization of SiC Field Effect Transistors. Dis. Stockholm : KTH, 2004

Patents

Bertilsson, K. (2013). A transformer .

Harris, C. , Basceri, C. & Bertilsson, K. (2012). Schottky diode with incorporated pn- junctions .

Bertilsson, K. (2011). Transformer .

Harris, C. , Bertilsson, K. & Konstantinov, A. (2011). Method of manufacturing silicon carbide self-aligned epitaxial MOSFET for high powered device applications .

Harris, C. , Basceri, C. & Bertilsson, K. (2010). Semiconductor device .

Harris, C. , Bertilsson, K. & Konstantinov, A. (2009). Silicon carbide self-aligned epitaxial MOSFET for high powered device applications .

Nilsson, H. , Olin, H. , Bertilsson, K. & Hummelgård, M. (2005). Nanoelectronic device (Swedish Patent Application no. 0501443-6) .