Forskarpresentation
Magnus Isaksson
Professor, akademichef, vicerektor för strategisk utveckling
Forskningsämne: Elektroteknik
E-post: magnus.isaksson@hig.se
Telefon: 026-64 82 49
Mobil: 070-360 82 49
Professor Magnus Isaksson har magisterexamen i elektronik med inriktning mot mikrovågsteknik från Högskolan i Gävle (2000), tekn. licentiatexamen i signalbehandling från Uppsala universitet (2006), och tekn. doktorsexamen i telekommunikation från Kungliga tekniska högskolan, Stockholm, 2007. År 2012 utnämndes dr Isaksson till docent i telekommunikation vid Kungliga tekniska högskolan, Stockholm.
Han arbetade inom elektronik och telekommunikation på Televerket, Teli AB och Teli Service AB, Sverige, 1989–1999. Han forskar och är professor i elektronik, särskilt signalbehandling. Professor Isaksson är för närvarande akademichef vid Akademin för hälsa och arbetsliv samt vicerektor för strategisk utveckling, vid Högskolan i Gävle.
Hans huvudintressen är algoritmer för signalbehandling för radiofrekvensmätningar och modellering av olinjära mikrovågssystem.
Professor Isaksson är författare eller medförfattare till många publicerade vetenskapliga tidskriftsartiklar och konferensartiklar inom området, och har också gett ut en bok på ett vetenskapsförlag.
AKTUELL FORSKNING
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Artiklar
Vetenskapliga artiklar, refereegranskade
Rafique, S., Rana, S., Björsell, N. & Isaksson, M. (2024). Evaluating the advantages of passive exoskeletons and recommendations for design improvements. Journal of Rehabilitation and Assistive Technologies Engineering, 11, 1-13. 10.1177/20556683241239875
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Masud, N., Rafique, S., Smith, C. & Isaksson, M. (2023). Design control and actuator selection of a lower body assistive exoskeleton with 3-D passive compliant supports. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 45 (12). 10.1007/s40430-023-04480-8
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Jain, P., Bera, T., Singla, A. & Isaksson, M. (2022). Linear actuator–based knee exoskeleton for stand–sit–stand motions: a bond graph approach. Simulation (San Diego, Calif.), 98 (8), 627-644. 10.1177/00375497211073583
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Masud, N., Senkic, D., Smith, C. & Isaksson, M. (2021). Modeling and control of a 4-ADOF upper-body exoskeleton with mechanically decoupled 3-D compliant arm-supports for improved-pHRI. Mechatronics (Oxford), 73. 10.1016/j.mechatronics.2020.102406
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Jain, P., Bera, T., Rafique, S., Singla, A. & Isaksson, M. (2020). Comparative study of knee joint torque estimations for linear and rotary actuators using bond graph approach for stand–sit–stand motions. International Journal of Advanced Robotic Systems, 17 (5), 1-13. 10.1177/1729881420963742
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Masud, N., Mattsson, P., Smith, C. & Isaksson, M. (2020). On stability and performance of disturbance observer-based-dynamic load torque compensator for assistive exoskeleton : A hybrid approach. Mechatronics (Oxford), 69. 10.1016/j.mechatronics.2020.102373
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Masud, N., Smith, C. & Isaksson, M. (2018). Disturbance observer based dynamic load torque compensator for assistive exoskeletons. Mechatronics (Oxford), 54, 78-93. 10.1016/j.mechatronics.2018.07.003
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Khan, Z., Zenteno, E., Händel, P. & Isaksson, M. (2018). Extraction of the Third-Order 3x3 MIMO Volterra Kernel Outputs Using Multitone Signals. IEEE transactions on microwave theory and techniques, 66 (11), 4985-4999. 10.1109/TMTT.2018.2854186
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Khan, Z., Zenteno, E., Händel, P. & Isaksson, M. (2017). Digital Predistortion for Joint Mitigation of I/Q Imbalance and MIMO Power Amplifier Distortion. IEEE transactions on microwave theory and techniques, 65 (1), 322-333. 10.1109/TMTT.2016.2614933
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Singh Rupal, B., Rafique, S., Singla, A., Singla, E., Isaksson, M. & Singh Virk, G. (2017). Lower-limb exoskeletons : Research trends and regulatory guidelines in medical and non-medical applications. International Journal of Advanced Robotic Systems, 14 (6), 1-27. 10.1177/1729881417743554
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Zenteno, E., Khan, Z., Isaksson, M. & Händel, P. (2016). Finding Structural Information about RF Power Amplifiers using an Orthogonal Nonparametric Kernel Smoothing Estimator. IEEE Transactions on Vehicular Technology, 65 (5), 2883-2889. 10.1109/TVT.2015.2434497
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Zenteno, E., Isaksson, M. & Händel, P. (2016). Pilot tone aided measurements to extend the bandwidth of radio frequency applications. Measurement, 90, 534-541. 10.1016/j.measurement.2016.05.005
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Zenteno, E., Khan, Z., Isaksson, M. & Händel, P. (2016). Using Intrinsic Integer Periodicity to Decompose the Volterra Structure in Multi-Channel RF Transmitters. IEEE Microwave and Wireless Components Letters, 26 (4), 297-299. 10.1109/LMWC.2016.2525019
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Zenteno, E., Isaksson, M. & Händel, P. (2015). Output impedance mismatch effects on the linearity performance of digitally predistorted power amplifiers. IEEE transactions on microwave theory and techniques, 63 (2), 754-765. 10.1109/TMTT.2014.2387060
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Landin, P., Barbé, K., Van Moer, W., Isaksson, M. & Händel, P. (2015). Two novel memory polynomial models for modeling of RF power amplifiers. International journal of microwave and wireless technologies, 7 (1), 19-29. 10.1017/S1759078714000397
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Landin, P., Fritzin, J., Van Moer, W., Isaksson, M. & Alvandpour, A. (2012). Modeling and digital predistortion of class-D outphasing RF power amplifiers. IEEE transactions on microwave theory and techniques, 60 (6), 1907-1915. 10.1109/TMTT.2012.2187532
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Landin, P., Van Moer, W., Isaksson, M. & Händel, P. (2012). Peak-Power Controlled Digital Predistorters for RF Power Amplifiers. IEEE transactions on microwave theory and techniques, 60 (11), 3582-3590. 10.1109/TMTT.2012.2213830
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Isaksson, M. & Zenteno, E. (2011). A synthetic vector network analyzing measurement system. IEEE Transactions on Instrumentation and Measurement, 60 (6), 2154-2161. 10.1109/TIM.2011.2113132
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Tehrani, A., Cao, H., Afsardoost, S., Eriksson, T., Isaksson, M. & Fager, C. (2010). A Comparative Analysis of the Complexity/Accuracy Tradeoff in Power Amplifier Behavioral Models. IEEE transactions on microwave theory and techniques, 58 (6), 1510-1520. 10.1109/TMTT.2010.2047920
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Björsell, N., Isaksson, M., Händel, P. & Rönnow, D. (2010). Kautz-Volterra modelling of analogue-to-digital converters. Computer Standards & Interfaces, 32 (3), 126-129. 10.1016/j.csi.2009.11.007
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Landin, P., Isaksson, M. & Händel, P. (2010). Parameter Extraction and Performance Evaluation Method for Increased Performance in RF Power Amplifier Behavioral Modeling. International Journal of RF and Microwave Computer-Aided Engineering, 20 (2), 200-208. 10.1002/mmce.20422
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Isaksson, M. & Rönnow, D. (2007). A Parameter-Reduced Volterra Model for Dynamic RF Power Amplifier Modeling based on Orthonormal Basis Functions. International Journal of RF and Microwave Computer-Aided Engineering, 17 (6), 542-551. 10.1002/mmce.20253
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Rönnow, D., Wisell, D. & Isaksson, M. (2007). Three-Tone Characterization of Nonlinear Memory Effects in Radio Frequency Power Amplifiers. IEEE Transactions on Instrumentation and Measurement, 56 (6), 2646-2657. 10.1109/TIM.2007.907958
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Isaksson, M., Wisell, D. & Rönnow, D. (2006). A Comparative Analysis of Behavioral Models for RF Power Amplifiers. IEEE transactions on microwave theory and techniques, 54 (1), 348-359. 10.1109/TMTT.2005.860500
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Rönnow, D. & Isaksson, M. (2006). Digital predistortion of radio frequency power amplifiers using a Kautz-Volterra model. Electronics Letters, 42 (13), 780-782. 10.1049/el:20060460
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Isaksson, M., Wisell, D. & Rönnow, D. (2005). Wide-Band Dynamic Modeling of Power Amplifiers Using Radial-Basis Function Neural Networks. IEEE transactions on microwave theory and techniques, 53 (11), 3422-3428. 10.1109/TMTT.2005.855742
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Böcker
Isaksson, M. (2009). Radio Frequency Power Amplifiers : Behavioral Modeling, Parameter-Reduction, and Digital Predistortion. Saarbrücken: VDM Verlag. 68 s.
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Doktorsavhandling
Isaksson, M. (2007). Radio Frequency Power Amplifiers : Behavioral Modeling, Parameter-Reduction, and Digital Predistortion. Diss. (sammanfattning), 2007. Stockholm: Royal Institute of Technology. 59 s. (Trita-EE 2007:010)
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Kapitel i böcker
Christensen, S., Bai, S., Rafique, S., Isaksson, M., O'Sullivan, L., Power, V. & Virk, G. (2019). AXO-SUIT : A Modular Full-Body Exoskeleton for Physical Assistance. Mechanism Design for Robotics : Proceedings of the 4th IFToMM Symposium on Mechanism Design for Robotics. Cham: Springer Netherlands. S. 443-450. 10.1007/978-3-030-00365-4_52
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Konferensbidrag
Rafique, S., Rana, S., Björsell, N. & Isaksson, M. (2023). Using robotic exoskeletons to reduce muscle activity of workers. : ACM. 10.1145/3610419.3610473
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Andersson, R., Björsell, N. & Isaksson, M. (2021). Robots are a promising investment to fight pandemics. 2021 8th International Conference on Signal Processing and Integrated Networks (SPIN): IEEE. S. 458-463. 10.1109/SPIN52536.2021.9566116
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Khan, Z., Händel, P. & Isaksson, M. (2017). A Comparative Analysis of the Complexity/Accuracy Tradeoff in the Mitigation of RF MIMO Transmitter Impairments. 2017 89th ARFTG Microwave Measurement Conference (ARFTG): IEEE. 10.1109/ARFTG.2017.8000827
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Alizadeh, M., Rönnow, D., Händel, P. & Isaksson, M. (2017). A new Block-Structure Modeling Technique for RF Power Amplifiers in a 2x2 MIMO System. 13th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS): IEEE. S. 224-227. 10.1109/TELSKS.2017.8246268
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Khan, Z., Zenteno, E., Händel, P. & Isaksson, M. (2017). Multitone design for third order MIMO volterra kernels. 2017 IEEE MTT-S International Microwave Symposium (IMS): IEEE conference proceedings. S. 1553-1556. 10.1109/MWSYM.2017.8058925
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Amin, S., Khan, Z., Isaksson, M., Händel, P. & Rönnow, D. (2016). Concurrent dual-band power amplifier model modification using dual two-tone test. 46th European Microwave Conference (EUMC) 2016. S. 186-189. 10.1109/EuMC.2016.7824309
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Khan, Z., Zenteno, E., Händel, P. & Isaksson, M. (2015). Study of the Power Amplifier transfer function symmetry and its relation to dynamic effects. 2015 IEEE 16th Annual Wireless and Microwave Technology Conference (WAMICON): IEEE conference proceedings. S. 1-6. 10.1109/WAMICON.2015.7120407
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Zenteno, E., Amin, S., Isaksson, M., Rönnow, D. & Händel, P. (2014). Combating the Dimensionality of Nonlinear MIMO Amplifier Predistortion by Basis Pursuit. Proceedings of the 44th European Microwave Conference. S. 833-836.
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Khan, Z., Zenteno, E., Isaksson, M. & Händel, P. (2014). Density estimation models for strong nonlinearities in RF power amplifiers. Proceedings of the Asia-Pacific Microwave Conference 2014. S. 116-118.
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Landin, P., Fritzin, J., Jung, Y., Enqvist, M., Isaksson, M. & Alvandpour, A. (2012). Digital baseband pre-distortion of class-D outphasing amplifiers. Proceedings Gigahertz Symposium 2012.
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Amin, S., Zenteno, E., Landin, P., Rönnow, D., Isaksson, M. & Händel, P. (2012). Noise Impact on the Identification of Digital Predistorter Parameters in the Indirect Learning Architecture. 2012 Swedish Communication Technologies Workshop (Swe-CTW): IEEE conference proceedings. S. 36-39. 10.1109/Swe-CTW.2012.6376285
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Landin, P., Nader, C., Van Moer, W., Björsell, N., Isaksson, M. & Händel, P. (2011). Overview of Synergetic OFDM Crest Factor Reduction and Digital Pre-Distortion for RF PAs. RFMTC11.
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Nader, C., Landin, P., Van Moer, W., Björsell, N., Händel, P. & Isaksson, M. (2011). Peak-to-average power ratio reduction versus digital pre-distortion in OFDM based systems. 2011 IEEE MTT-s International Microwave Symposium: Institute of Electrical and Electronics Engineers Inc. S. 5972830-. 10.1109/MWSYM.2011.5972830
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Landin, P., Bengtsson, O. & Isaksson, M. (2009). Power Amplifier Behavioural Model Mismatch Sensitivity and the Impact on Digital Predistortion Performance. Proc. 39th European Microwave Conference (EuMC): IEEE conference proceedings. S. 338-341.
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Landin, P., Isaksson, M., Keskitalo, N. & Tornblad, O. (2009). Sideband asymmetries in RF Power LDMOS Before and After Digital Predistortion. .
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Landin, P., Nader, C., Björsell, N., Isaksson, M., Wisell, D., Händel, P., Andersen, O. & Keskitalo, N. (2009). Wideband Characterization of Power Amplifiers Using Undersampling. 2009 IEEE MTT-S International Microwave Symposium. Boston: IEEE MTT. S. 1365-1368.
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Nader, C., Landin, P., Björsell, N., Isaksson, M., Wisell, D., Händel, P., Andersen, O. & Keskitalo, N. (2009). Wideband Power Amplifiers Characterization by Undersampling : Zhu-Frank Sampling Theorem. .
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Landin, P. & Isaksson, M. (2008). A review of validation criteria for behavioral power amplifier models. .
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Zenteno, E., Isaksson, M., Wisell, D., Keskitalo, N. & Andersen, O. (2008). An Envelope Domain Measurement Test Setup to Acquire Linear Scattering Parameters. 72nd ARFTG Conf. Dig., Portland, OR. S. 54-57. 10.1109/ARFTG.2008.4804287
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Landin, P., Isaksson, M. & Händel, P. (2008). Comparison of Evaluation Criteria for Power Amplifier Behavioral Modeling. IEEE MTT-S International Microwave Symposium Digest; 2008, Atlanta, GA, USA. S. 1441-1444. 10.1109/MWSYM.2008.4633050
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Zenteno, E., Andersen, O., Isaksson, M., Keskitalo, N. & Wisell, D. (2008). Nonlinear Network Analysis for Modern Communication Devices and Systems. 72nd ARFTG Conf. Dig., Portland, OR. S. 64-68. 10.1109/ARFTG.2008.4804292
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Landin, P., Fager, C., Isaksson, M. & Andersson, K. (2008). Power Amplifier Behavioral Modeling Performance Comparison of the LSNA and the Modulation-Domain System. 72nd ARFTG Microwave Measurement Symposium, 2008, Portland, OR.. S. 73-78. 10.1109/ARFTG.2008.4804282
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Wisell, D., Isaksson, M. & Keskitalo, N. (2007). A General Evaluation Criteria for Behavioral PA Models. 69th ARFTG Microwave measurement conference, Honolulu, HI, USA. S. 251-255.
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Isaksson, M., Wisell, D., Eng, A. & Rönnow, D. (2007). A Study of a Variable-Capacitance Drain Network's Influence on Dynamic Behavioral Modeling of an RF PA. 69th ARFTG Microwave measurement conference, Honolulu, HI, USA. S. 112-116. 10.1109/ARFTG.2007.5456336
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Wisell, D. & Isaksson, M. (2007). Derivation of a Behavioral RF Power Amplifier Model with Low Normalized Mean-Square Error. Proceedings of European Microwave Week 2007, 8-12 October 2007, Munich, Germany. S. 1283-1286.
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Björsell, N., Isaksson, M., Händel, P. & Rönnow, D. (2007). Kautz-Volterra modelling of an analogue-to-digital converter using a stepped three-tone excitation. 12th IMEKO TC-4 International Workshop on ADC MODELLING AND TESTING, Iasi, Romania, September 2007. S. 107-112.
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Isaksson, M. (2007). Parameter-reduction for Volterra models in radio frequency power amplifier applications. RF Measurement Technology Conference, Gävle 11-12 September.
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Wisell, D. & Isaksson, M. (2007). Validation of Behavioral Radio Frequency Power Amplifier Models. RF Measurement Technology Conference, Gävle 11-12 September.
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Isaksson, M. & Rönnow, D. (2006). A Kautz-Volterra Behavioral Model for RF Power Amplifiers. IEEE MTT-S International Microwave Symposium Digest, 2006. S. 485-488.
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Wisell, D., Isaksson, M., Keskitalo, N. & Rönnow, D. (2006). Wideband characterization of a Doherty amplifier using behavioral modeling. 67th ARFTG Conference 2006. S. 190-199. 10.1109/ARFTG.2006.4734374
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Isaksson, M., Wisell, D. & Rönnow, D. (2005). Behavioural Amplifier Modelling Using Sampled Complex Envelope Measurement Data. Proc. Gigahertz 2005. S. 213-216.
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Isaksson, M., Wisell, D. & Rönnow, D. (2005). Nonlinear Behavioral Modeling of Power Amplifiers Using Radial-Basis Function Neural Networks. 2005 IEEE MTT-S International Microwave Symposium Digest. S. 1967-1970. 10.1109/MWSYM.2005.1517128
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Wisell, D. & Isaksson, M. (2005). Validation of Behavioural Power Amplifier Models Using Coherent Averaging. Proc. Gigahertz 2005 : Uppsala, Sweden. S. 318-321.
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Isaksson, M. & Wisell, D. (2004). Extension of the Hammerstein Model for Power Amplifier Applications. 63rd ARFTG Conference Digest - Spring 2004. S. 131-137. 10.1109/ARFTG.2004.1387868
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Licentiatavhandling
Isaksson, M. (2005). Behavioural Modelling of Radio Frequency Power Amplifiers : An Evaluation of Some Block Structure and Neural Network Models. Lic.-avh. , 2005. Uppsala: Uppsala University.
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Rapporter
Landin, P., Barbé, K., Van Moer, W., Isaksson, M. & Händel, P. (2011). Proofs of Derivations in Memory Polynomial Baseband Modeling of RF Power Amplifiers. 5 s. (Working paper 45)
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Johansson, A., Isaksson, M. & Rönnow, D. (2010). An analysis of Kautz-Volterra models for modeling block structure nonlinear systems. Gävle: University of Gävle. 14 s. (Working paper 43)
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Isaksson, M. (2008). A Measure to Characterize the Impact of Sets of Scientific Papers. Gävle: University of Gävle. 14 s. (Working paper 38)
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