Degrees
Ing.: Czech Technical University in Prague - Faculty of Electrical Engineering
Ph.D.: Czech Technical University in Prague - Faculty of Electrical Engineering - Department of Electromagnetic Field
Research interests
Electromagnetic field theory
Antenna theory
Wireless power transmission
Teaching
Electromagnetic field
Antennas
Propagation of electromagnetic waves
Projects and Theses / Projekty a závěrečné práce
Projects
ICT COST Action IC1301 Wireless Power Transmission for Sustainable Electronics (WiPE)
ICT COST Action IC0803 RF/Microwave Communication Subsystems for Emerging Wireless Technologies (RFCSET)
Publications
J. Kraček, M. Švanda, K. Hoffmann, Scalar method for reading of chipless RFID tags based on limited ground plane backed dipole resonator array, IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 11, pp. 4547-4558, Nov. 2019, DOI: 10.1109/TMTT.2019.2918287.
P. Hazdra, J. Kraček, T. Lonsky, On the end-fire super directivity of arrays of two elementary dipoles and isotropic radiators, IET Microwaves, Antennas & Propagation, pp. 2405-2411, Nov. 2019, DOI: 10.1049/iet-map.2018.6013.
J. Kracek, M. Svanda, Analysis of capacitive wireless power transfer, IEEE Access, vol. 7, pp. 26678–26683, Mar. 2019, DOI: 10.1109/ACCESS.2018.2883712.
T. Lonsky, P. Hazdra, J. Kracek, Characteristic modes of dipole arrays, IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 6, pp. 998-1001, Apr. 2018, DOI: 10.1109/LAWP.2018.2828986.
J. Havlicek, M. Svanda, M. Polivka, J. Machac, J. Kracek, Chipless RFID tag based on electrically small spiral capacitively loaded dipole, IEEE Antennas and Wireless Propagation Letters, vol. 16, art. no. 8064191, pp. 3051-3054, Oct. 2017, DOI: 10.1109/LAWP.2017.2760059.
N. B. Carvalho, A. Georgiadis, A. Costanzo, N. Stevens, J. Kracek et al., Europe and the future for WPT, IEEE Microwave Magazine, vol. 18, no. 4, art. no. 7920430, pp. 56-87, Jun. 2017, DOI: 10.1109/MMM.2017.2680078.
J. Kracek, M. Svanda, M. Mazanek, J. Machac, Implantable semi-active UHF RFID tag with inductive wireless power transfer, IEEE Antennas and Wireless Propagation Letters, vol. 15, art. no. 7389359, pp. 1657-1660, 2016, DOI: 10.1109/LAWP.2016.2520663.
J. Kracek, V. Pankrac, M. Mazanek, Analysis of magnetic field of thin-wall air induction coil of arbitrary cross section with the help of scalar magnetic potential, IEEE Transactions on Magnetics, vol. 52, no. 5, art. no. 7004112, May 2016, DOI: 10.1109/TMAG.2015.2472526.
V. Pankrac, J. Kracek, Simple algorithms for the calculation of the intensity of the magnetic field of current loops and thin-wall air coils of a general shape using magnetic dipoles, IEEE Transactions on Magnetics, vol. 48, no. 12, art. no. 6252056, pp. 4767-4778, Dec. 2012. DOI: 10.1109/TMAG.2012.2205012.
J. Kracek, M. Mazanek, Wireless power transmission for power supply: State of art, Radioengineering, vol. 20, no. 2, pp. 457-463, Jun. 2011.
J. Kracek, M. Mazanek, Possibilities of wireless power supply, International Journal of Microwave and Wireless Technologies, vol. 2, no. 2, pp. 153-157, Apr. 2010, DOI: 10.1017/S1759078710000255.
J. Kracek, M. Svanda, Power balance of capacitive wireless power transfer, European Microwave Conference in Central Europe, EuMCE, Prague, Czech Republic, 2019, pp. 1–4.
T. Lonsky, P. Hazdra, J. Kracek, Superdirective closely-spaced arrays, 13th European Conference on Antennas and Propagation, EuCAP 2019, Krakow, Poland, 2019, pp. 1–3.
T. Lonsky, P. Hazdra, J. Kracek, Superdirective dipole arrays, 13th European Conference on Antennas and Propagation, EuCAP 2019, Krakow, Poland, 2019, pp. 1–3.
P. Hazdra, T. Lonsky, J. Kracek, Modal efficiency of dipole arrays above ground, 12th European Conference on Antennas and Propagation, EuCAP 2018, London, 2018, pp. 1-3.
T. Lonsky, P. Hazdra, J. Kracek, Design of closely spaced dipole array based on characteristic modes, 39th PIERS, Singapore, 2017.
T. Lonsky, P. Hazdra, J. Kracek, Modal decomposition for arbitrary dipole array, 2017 Conference on Microwave Techniques, COMITE 2017, Brno, 2017, art. no. 7932302, pp.1-4, DOI: 10.1109/COMITE.2017.7932302.
P. Hazdra, T. Lonsky, J. Kracek, Modal decomposition theory for arrays of dipoles, 11th European Conference on Antennas and Propagation, EuCAP 2017, Paris, 2017, art. no. 7928351, pp. 2660-2662, DOI: 10.23919/EuCAP.2017.7928351.
J. Kracek, M. Svanda, M. Mazanek, J. Machac, Semi-active 866 MHz RFID implantable tag fed by 6.78 MHz inductive wireless power transfer, 46th European Microwave Conference, EuMC 2016, London, 2016, art. no. 7824419, pp. 620-622, DOI: 10.1109/EuMC.2016.7824419.
J. Kracek, M. Mazanek, Measurement of magnetic flux density vector, 6th European Conference on Antennas and Propagation, EuCAP 2012, Prague, 2012, art. no. 6206493, pp. 2173-2174, DOI: 10.1109/EuCAP.2012.6206493.
J. Kracek, M. Mazanek, Power balance of inductive wireless power transmission, 5th European Conference on Antennas and Propagation, EuCAP 2011, Rome, 2011, art. no. 5782444, pp. 3974-3978.
J. Kracek, M. Mazanek, The wireless power supply with the use of coupling surface, 4th European Conference on Antennas and Propagation, EuCAP 2010, Barcelona, 2010, art. no. 5505486.
P. Hazdra, M. Capek, J. Kracek, Optimization tool for fractal patches based on the IFS algorithm, 3rd European Conference on Antennas and Propagation, EuCAP 2009, Berlin, 2009, art. no. 5067974, pp. 1837-1839.
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