Zvonimir Šipuš - Research


Scientific interests

  • optical communications and components (design and modeling of optical fibers, optical communication systems design, optical sensors)
  • periodic structures (metasurfaces, metamaterials, periodic structures with higher symmetries)
  • numerical methods (Method of Moments applied in the modelling of multilayered structures)
  • microwave antennas (microstrip antennas, lenses and lens antennas, implantable antennas)
  • conformal antennas (cylindrical and spherical antenna arrays)
  • electromagnetic field theory



Recent publications in scientific journals (2010. -2023.)

(entire list of publications: https://www.bib.irb.hr/pregled/znanstvenici/163975?report=1 ):

[1] M. Gao, Z. Šipuš, I. V. Soares, S. Raman, D. Nikolayev, A. K. Skrivervik, “Analytical Model for Calculating Gain Pattern of Antennas Implanted in Large Host Bodies,” IEEE Transactions on Antennas and Propagation, Early Access, 2024.

[2] D. Tomić and Z. Šipuš, “Rigorous Coupled Wave Analysis of Parallel-Plate Waveguides Loaded With Glide-Symmetric Dielectric Structures,” IEEE Transactions on Microwave Theory and Techniques, Early Access, 2024.

[3] M. Gao, J. D. Rosenthal, K. Wu, G. A. Ramírez, Z. Sipus, S. P. Lacour, and A. K. Skrivervik, "Radiation Patterns of RF Wireless Devices Implanted in Small Animals: Unexpected Deformations Due to Body Resonance," IEEE Transactions on Biomedical Circuits and Systems, Vol. 18 , No. 1, pp. 27 – 38, Jan. 2024.

[4] Z. Šipuš, D. Barbarić and M. Bosiljevac, "Design of Cascaded Cylindrical Metasurfaces Using Resonance Cancellation Method," IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 12, pp. 2841 - 2845, Dec. 2023.

[5] D. Mikulić, E. Šopp, D. Bonefačić, J. Bartolić, and Z. Šipuš. "Design and Realization of Wearable Textile Slotted Waveguide Antennas," Sensors, Vol. 23, no. 17, Paper No. 7509, 2023.

[6] M. Gao, Z. Šipuš, and A. Skrivervik, “Analytic Approximation of In-Body Path Loss for Implanted Antennas,” IEEE Open Journal of Antennas and Propagation, Vol. 4, pp. 537-545, 2023.

[7] I. Soares, M. Gao, E. Cil, Z. Sipus, A. Skrivervik, J. Ho, D. Nikolayev, “Wireless Powering Efficiency of Deep-Body Implantable Devices,” IEEE Transactions on Microwave Theory and Techniques, Vol. 71, no. 7, pp. 2680-2692, June 2023.

[8] M. Kuprešak, X. Zheng, R. Mittra, Z. Šipuš,  G.  Vandenbosch, V.  Moshchalkov, “Single-Molecule Fluorescence Enhancement by Plasmonic Core–Shell Nanostructures Incorporating Nonlocal Effects,” Advanced Theory and Simulations, Vol. 5, Paper No. 2100558, 2022.

[9] D.Mikulić, E.  Šopp, D.  Bonefačić, Z. Šipuš, “Textile Slotted Waveguide Antennas for Body-Centric Applications,” Sensors, Vol. 22 (2022), Paper No. 1046, 2022.

[10] P. Castillo-Tapia, K. Van Gassen, Q. Chen, F. Mesa, Z. Šipuš, O. Quevedo-Teruel, "Dispersion Analysis of Twist-Symmetric Dielectric Waveguides," Photonics, Vol. 8. Paper No. 8060206, 2021.

[11] Z. Šipuš, A. Šušnjara, A. Skrivervik, D. Poljak, M. Bosiljevac, "Influence of Uncertainty of Body Permittivity on Achievable Radiation Efficiency of Implantable Antennas – Stochastic Analysis,” IEEE Transactions on Antennas and Propagation, Vol. 69, no. 10, pp. 6894-6905, Oct. 2021.

[12] Z. Šipuš, K. Cavar, M.Bosiljevac,E. Rajo-Iglesias, "Glide-Symmetric Holey Structures Applied to Waveguide Technology: Design Considerations," Sensors, Vol. 20, Paper No. 6871, 2020.

[13] O. Quevedo-Teruel, G. Valerio, Z. Šipuš, E. Rajo-Iglesias, "Periodic Structures with Higher Symmetries," IEEE Microwave Magazine, Vol. 21, Issue 11; pp. 36-49, 2020.  

[14] D. Barbarić, Z. Šipuš, "Designing Metasurfaces with Canonical Unit Cells," Crystals, Vol. 10, Paper No. 938, 2020.

[15] O. Quevedo-Teruel et al., “Roadmap on metasurfaces,” Journal of Optics, Vol. 21, Issue 7; Paper No. 073002, 2019.

[16] Z. Šipuš, Z. Ereš, D. Barbarić, “Modeling Cascaded Cylindrical Metasurfaces with Spatially-Varying Impedance Distribution,” Radioengineering, Vol. 28, No. 3, pp. 505-511, 2019. 

[17] Z. Šipuš, M. Bosiljevac, “Modeling of Glide-Symmetric Dielectric Structures,” Symmetry, Vol. 11, Issue 6, Paper No. 805, 2019.

[18] A. Skrivervik, M.  Bosiljevac, Z. Šipuš, “Fundamental Limits for Implanted Antennas: Maximum Power Density Reaching Free Space,” IEEE Transactions on Antennas and Propagation, Vol. 67, pp. 4978-4988, Aug. 2019.

[19] G. Valerio, F. Ghasemifard, Z. Šipuš, O. Quevedo-Teruel, “Glide-Symmetric All-Metal Holey Metasurfaces for Low-Dispersive Artificial Materials: Modeling and Properties,” IEEE Transactions on Microwave Theory and Techniques, Vol. 66, pp. 3210-3223, July 2018.

[20] Z. Šipuš, M. Bosiljevac, A.Grbic, “Modelling Cascaded Cylindrical Metasurfaces Using Sheet Impedances and a Transmission Matrix Formulation,” IET Microwaves Antennas & Propagation, Vol. 12, No. 7, pp. 1041-1047, 2018.

[21] M. Ebrahimpouri, E. Rajo-Iglesias, Z. Šipuš, O. Quevedo-Teruel, “Cost-Effective Gap Waveguide Technology Based on Glide-Symmetric Holey EBG Structures,”  IEEE Transactions on Microwave Theory and Techniques, Vol. 66, pp. 927-934, Feb. 2018.

[22] B. Ivšić, D. Bonefačić, Z. Šipuš, J. Bartolić, “An Insight into Creeping Electromagnetic Waves around the Human Body,” Wireless Communications and Mobile Computing, Vol. 2017, Article ID 2510196, 2017.

[23] P.-S. Kildal, Z. Šipuš, J. Yang, R. Maaskant, “Useful Physical Images and Algorithms for Vector Dyadic Green’s Functions,” IEEE Antennas & Propagation Magazine, Vol. 59, No. 4, pp. 106-116, Aug. 2017.

[24] G. Valerio, Z. Šipuš, A. Grbic, O. Quevedo-Teruel, “Nonresonant modes in plasmonic holey metasurfaces for the design of artificial flat lenses,” Optics Letters, Vol. 42, pp. 2026-2029, 2017.

[25] G. Valerio, Z. Šipuš, A. Grbic, O. Quevedo-Teruel, “Accurate Equivalent-Circuit Descriptions of Thin Glide-Symmetric Corrugated Metasurfaces,” IEEE Transactions on Antennas and Propagation, Vol. 65, pp. 2695-2700, 2017.

[26]  M. Vukomanović, J.L. Vazquez-Roy, O. Quevedo-Teruel, E. Rajo-Iglesias, Z. Šipuš, “Gap Waveguide Leaky-Wave Antenna,” IEEE Transactions on Antennas and Propagation, Vol. 64, pp. 2055-2060, 2016.

[27] M. Vukomanović, M. Bosiljevac, Z. Šipuš, “Analysis of Arbitrary Gap-Waveguide Structures Based on Efficient Use of Mode Matching Technique,” IEEE Antennas and Wireless Propagation Letters, Vol. 15, pp. 1844-1847, 2016.

[28]  M. Bosiljevac, Z. Šipuš, P.-S. Kildal, A.  Freni, “Simple Boundary Condition for Canonical EBG surface: PMC-backed Uniaxial Medium,” IEEE Transactions on Antennas and Propagation, Vol.  64, pp. 785-790, 2016.

[29]  Z. Šipuš, D. Bojanjac, T. Komljenovic, "Electromagnetic Modeling of Spherically Stratified Lenses Illuminated by Arbitrary Sources," IEEE Transactions on Antennas and Propagation, Vol. 63, pp. 1837-1843, 2015.

[30] M. Bosiljevac, Z. Šipuš, “Propagation in Finite Lossy Media: an Application to WBAN,” IEEE Antennas and Wireless Propagation Letters, Vol. 14, pp. 1546-1549, 2015.

[31]  A. Aguilar, Z. Šipuš, M. Sierra-Perez, “An Asymptotic Solution for Surface Fields on a Dielectric-Coated Circular Cylinder with an Effective Impedance Boundary Condition,” IEEE Transactions on Antennas and Propagation, Vol. 61, pp. 5175-5183, 2013.

[32] T. Komljenović, D. Babić, Z. Šipuš, “Characterization of Mirror-Based Modulation-Averaging Structures,” Applied Optics, Vol. 52, pp. 3234-3240, 2013.

[33] D. Bojanjac, Z. Šipuš, “Oblique Incidence Performance of Anisotropic Cylindrical Structures Used for Invisibility Cloak Design,” IEEE Transactions on Antennas and Propagation, Vol. 60,  pp.  4814-4821, Oct. 2012.

[34]  M. Bosiljevac, M. Casaletti, F. Caminita, Z. Šipuš, S. Maci, “Non-uniform Metasurface Luneburg Lens Antenna Design,” IEEE Transactions on Antennas and Propagation, Vol. 60,  pp.  4065-4073, Sep. 2012.

[35] T. Komljenović, D. Babić, Z. Šipuš, “47-km 1.25-Gbps Transmission Using a Self-seeded Transmitter with a Modulation Averaging Reflector.” Optics Express, Vol. 20, pp. 17387-17393, 2012.

[36] Z. Šipuš, M. Bosiljevac, Ž. Milin Šipuš, “Acceleration of Series Summation Encountered in the Analysis of Conformal Antennas,” IEEE Antennas and Wireless Propagation Letters, Vol. 11,    pp. 1521-1524, 2012.

[37] P.-S. Kildal, A. Kishk, M. Bosiljevac, Z. Šipuš, “The PMC-Amended DB Boundary – A Canonical EBG Surface,” Applied Computational Electromagnetics Society Journal, Vol. 26,      pp. 96-108, 2011.

[38] T. Komljenović, D. Babić, Z. Šipuš, “Modulation-Averaging Reflectors for Extended-Cavity Optical Sources,” Journal of Lightwave Technology, Vol. 29, pp. 2249-2258, 2011.

[39] O. Quevedo-Teruel, Z. Šipuš, E. Rajo-Iglesias, “Characterization and Reduction of Mutual Coupling Between Stacked Patches,” IEEE Transactions on Antennas and Propagation, Vol. 59,  pp.  1031-1036, March 2011.

[40]  M. Bosiljevac, Z. Šipuš, P.-K. Kildal, “Construction of Green’s Functions of Parallel Plates with Periodic Texture with Application to Gap Waveguides – A Plane Wave Spectral Domain Approach,” IET Microwaves Antennas & Propagation, Vol. 4, pp. 1799-1810, Nov. 2010.

[41] B. Ivšić, T. Komljenović, Z. Šipuš, “Optimization of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization,” IEEE Transactions on Antennas and Propagation,  Vol. 58, pp. 3397-3401, Oct. 2010.

[42] T. Komljenović, R. Sauleau, Z. Šipuš, L. Le Coq, “Layered Circular-Cylindrical Dielectric Lens Antennas – Synthesis and Height Reduction Technique,” IEEE Transactions on Antennas and Propagation, Vol. 58, pp. 1783-1788, May 2010.


Book chapters:

[1] A. Skrivervik, M. Bosiljevac, Z. Sipus, “Antennas for implants: design and limitations,“ in Bioelectromagnetics in Healthcare: Advanced Sensing and Communication Applications, W. Whittow (Ed.), The Institution of Engineering and Technology (IET), 2022, pp. 73-105.  

[2]  E. Rajo-Iglesias, Z. Sipus, A. Uz Zaman, “Gap Waveguide Technology,” in Surface Electromagnetics: With Applications in Antenna, Microwave, and Optical Engineering, F. Yang, Y. Rahmat-Samii, (Eds.),  Cambridge: Cambridge University Press, 2019, pp. 198-230.

[3] R. J. Mailloux, S. Rengarajan, Z. Sipus, “Conformal and Low-Profile Arrays,“ in Antenna Engineering Handbook, J. L. Volakis, (Ed.). New York: Mc Graw Hill, 2019, pp. 645-664.

[4] Z. Sipus, T. Komljenovic, “Multi-Shell Radially Symmetrical Lens Antennas,“ in Aperture Antennas for Millimeter and Sub-Millimeter Wave Applications,  A. Boriskin, R. Sauleau (Eds.), Cham, Switzerland: Springer, 2017, pp. 37-73.

[5] S. Hrabar, Z. Sipus,  I. Malcic, “Broadening of Cloaking Bandwidth by Passive and Active Techniques,“ in Transformation Electromagnetics and Metamaterials, W.  Douglas, K. Do-Hoon (Eds.), London: Springer, 2013, pp. 349-394.


PhD advisor:

  1. Mingxiang Gao ("Electromagnetic Radiation of Implantable Antennas“, co-mentor, dissertation defended on 15. 03. 2024., École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, co-supervised with prof. Anja K. Skrivervik).
  2. Ivan Lujo ("Vibration sensor based on electromagnetic field redistribution in optical fiber", mentor, dissertation defended on 18. 02. 2020., FER, University of Zagreb)
  3. Petar Bašić ("Fiber-optic sensor cable for simultaneous distributed measurement of multiple physical quantities", mentor, dissertation defended on 02. 09. 2019., FER, University of Zagreb)
  4. Dalibor Purković ("Long range energy efficient wireless sensor system", mentor, dissertation defended on 08. 07. 2019., FER, University of Zagreb)
  5. Mladen Vukomanović ("Modelling of electromagnetic guiding and radiating structures based on gap waveguide technology", mentor, dissertation defended on 01. 12. 2016., FER, University of Zagreb)
  6. Dario Bojanjac ("Electromagnetic Wave Scattering on Planar and Cylindrical Anisotropic tructures", mentor, dissertation defended on 12. 06. 2015., FER, University of Zagreb)
  7. Tin Komljenović (“Extended-Cavity Optical Sources with Modulation Averaging Reflectors,“ co-mentor, dissertation defended on 09. 07. 2012., FER, University of Zagreb, co-supervised with  dr. Dubravko Babić)
  8. Marko Bosiljevac (“Efficient Analysis of Curved and Periodic Electromagnetic Structures using Asymptotic Forms of Green's Functions,“ mentor, dissertation defended on 03. 02. 2012., FER, University of Zagreb)
  9. Siniša Škokić (“Analysis of Reflector Antenna Systems by Means of New Conical Wave Objects,“ co-mentor, dissertation defended on 23. 04. 2010., FER, University of Zagreb, co-supervised with prof. Stefano Maci, University of Siena, Italy)
  10. Slavko Rupčić (“Circular Waveguide Antenna Arrays on Spherical Structures,” mentor, dissertation defended on 30.01.2009. FER, University of Zagreb).
  11. Nikša Burum (“Modelling of Microstrip Antennas on Spherical Structures,“ mentor, dissertation defended on 05.05.2004., FER, University of Zagreb).
  12. Sonja Zentner Pilinsky („“Analysis of Signal Propagation in Optical Fiber Based on Finite-Difference Method,“ mentor, dissertation defended on 29.01.2003., FER, University of Zagreb).
  13. Radovan Zentner („Mutual Coupling Modeling of Rectangular Microstrip Antennas with Parasitic Resonator“, mentor, dissertation defended on 29.11.2002., FER, University of Zagreb)
  14. Silvia Raffaelli (“Analysis of periodic surfaces and conformal antennas,“ co-mentor, dissertation defended on 15. 6. 2001., Chalmers University of Technology, Gothenburg, Sweden, co-supervised with prof. Per-Simon Kildal).