Zvonimir Šipuš - Research

Scientific interests

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

 

Projects list

(a) Head researcher on international project

1. Analysis and Design of Curved Metamaterial Structures, European Office of Aerospace Research and Development (EOARD), from 2015.

2. Constitutive Parameters of Metamaterial Structures Used for Invisible Cloak Realization, European Office of Aerospace Research and Development (EOARD), 2012-2013.

3. Metamaterial-Based Cylinders Used for Invisible Cloak Realization, European Office of Aerospace Research and Development (EOARD), 2010-2011.

4. Analysis of Curved Frequency Selective Surfaces, European Office of Aerospace Research and Development (EOARD), 2007-2008.

5. Analysis of Conformal Stacked-Patch Arrays, European Office of Aerospace Research and Development (EOARD), 2004-2005.

6. Analysis of Curved Microstrip Antennas, European Office of Aerospace Research and Development (EOARD), 2001-2003.

7. CyMPA – Program for analyzing microstrip patch array on circular-cylindrical structures, European Office of Aerospace Research and Development (EOARD), 1999-2000.

(b) Coordinator (FER) on international project

8. New frontiers in millimetre / sub-millimetre waves integrated dielectric focusing systems (NEWFOCUS), ESF Research Networking Programme, EU,  2010 - 2015.

9. Europan School of Antennas, Marie Curie Conferences and Training Courses, EU, 2007 - 2009.

10. Luneburg Antenna for Multimedia on Train (LAFMOT), EUREKA projekt, EU, od 2007 - 2010.

(c) Researcher on international project

11. ACE Antenna Centre of Excellence, Network of Excellence, 6th Framework of EU, 2004-2007.

  (d) Head researcher on domestic project

12. Sustainable Optical Communication and Sensor Systems based on Extended-Cavity Resonators (EXCAR), Funded by Croatian Science Foundation (HRZZ), from 2014.

13. Electromagnetic effects and structures in communication systems, Project 036-0361566-1570 . Funded by the Ministry of Science, Education and Sport of the Republic of Croatia, 2007-2013.

14. Applied electromagnetics in communication technogies, Project 0036-036 Funded by the Ministry of Science, Education and Sport of the Republic of Croatia, 2002-2006.

(e) Head of research on proof-of-concept projects

15. Fiber-optic sensor system for measuring vibrations, Končar Electrical Engineering Institute Inc., 2016 - 2018.

16.  Fiber optic vibration sensor for remote monitoring in high power electric
machines
, Proof-of-Concept (PoC), BICRO, 2014 - 2015.

17. Optical fiber sensors, Končar Electrical Engineering Institute Inc., 2013.

18. Averaging mirrors for passive optical networks based on self-seeded semiconductor optical amplifiers, Proof-of-Concept (PoC), BICRO, 2011.

 

 

PhD Advisor:

  1. 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)
  2. Dario Bojanjac ("Electromagnetic Wave Scattering on Planar and Cylindrical Anisotropic tructures", mentor, dissertation defended on 12. 06. 2015., FER, University of Zagreb)
  3. 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)
  4. 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)
  5. 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)
  6. Slavko Rupčić (“Circular Waveguide Antenna Arrays on Spherical Structures,” mentor, dissertation defended on 30.01.2009. FER, University of Zagreb).
  7. Nikša Burum (“Modelling of Microstrip Antennas on Spherical Structures,“ mentor, dissertation defended on 05.05.2004., FER, University of Zagreb).
  8. 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).
  9. Radovan Zentner („Mutual Coupling Modeling of Rectangular Microstrip Antennas with Parasitic Resonator“, mentor, dissertation defended on 29.11.2002., FER, University of Zagreb)
  10. 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).

 

Recent publications in scientific journals (2007. -2017.)

(entire list of publications: http://bib.irb.hr/lista-radova?autor=163975&lang=EN ):

 

[1] Z. Sipus, M. Bosiljevac, A.Grbic, “Modelling Cascaded Cylindrical Metasurfaces Using Sheet Impedances and a Transmission Matrix Formulation,” IET Microwaves Antennas & Propagation, Early Access, 2017.

[2] M. Ebrahimpouri, E. Rajo-Iglesias, Z. Sipus, O. Quevedo-Teruel, “Cost-Effective Gap Waveguide Technology Based on Glide-Symmetric Holey EBG Structures,”  IEEE Transactions on Microwave Theory and Techniques, Early Access, 2017.

[3] B. Ivsic, D. Bonefacic, Z. Sipus, J. Bartolic, “An Insight into Creeping Electromagnetic Waves around the Human Body,” Wireless Communications and Mobile Computing, Vol. 2017, Article ID 2510196, 2017.

[4] P.-S. Kildal, Z. Sipus, 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.

[5] G. Valerio, Z. Sipus, 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.

[6] G. Valerio, Z. Sipus, 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.

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

[8] M. Vukomanović, M. Bosiljevac, Z. Sipus, “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.

[9]  M. Bosiljevac, Z. Sipus, 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.

[10]  Z. Sipus, 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.

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

[12]  A. Aguilar, Z. Sipus, 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.

[13] T. Komljenovic, D. Babic, Z. Sipus, “Characterization of Mirror-Based Modulation-Averaging Structures,” Applied Optics, Vol. 52, pp. 3234-3240, 2013.

[14] D. Bojanjac, Z. Sipus, “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.

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

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

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

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

[19] T. Komljenovic, D. Babic, Z. Sipus, “Modulation-Averaging Reflectors for Extended-Cavity Optical Sources,” Journal of Lightwave Technology, Vol. 29, pp. 2249-2258, 2011.

[20] O. Quevedo-Teruel, Z. Sipus, 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.

[21]  M. Bosiljevac, Z. Sipus, 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.

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

[23] T. Komljenovic, R. Sauleau, Z. Sipus, 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.

[24] M. Bosiljevac, P. Persson, Z. Sipus, “Efficient Analysis of Aperture Antennas on Generally Shaped Convex Multilayered Surfaces Using a Hybrid SD-UTD Method”, IEEE Transactions on Antennas and Propagation, Vol. 57, pp. 1420-1431, May 2009.

[25] B. Ivsic, Z. Sipus, S. Hrabar, “Analysis of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization”, IEEE Transactions on Antennas and Propagation, Vol. 57, pp. 1521-1527, May 2009.

[26]  Z. Sipus, M. Bosiljevac, I. Lujo, “Specialty Optical Fibers: Analysis and Characterization,” Automatika,  Vol.  50, pp. 234-244, 2009.

[27] Z.Sipus, S. Skokic, M. Bosiljevac, N. Burum, “Study of Mutual Coupling Between Circular Stacked-Patch Antennas on a Sphere,” IEEE Transactions on Antennas and Propagation, Vol. 56, pp.1834-1844, July 2008.

[28] I. Vilovic, R. Nadj, Z. Sipus, “Propagation Prediction for Indoor Wireless communication Based on Neural Networks,”. Naše more, pp. 59-68, 2008.

[29]  T. Komljenovic, M. Bosiljevac, Z. Sipus, “Cost effective FBG based optical sensor,” Automatika,  Vol. 49, pp. 61-67, 2008.

[30]  I. Lujo, P. Klokoc, T. Komljenovic, M. Bosiljevac, Z. Sipus, “Fiber-Optic Vibration Sensor Based on Multimode Fiber,” Radioengineering, Vol. 17, pp. 93-97, 2008.

[31]  Z. Sipus, S. Skokic, M. Bosiljevac, N. Burum, “Performance Analysis of Spherical Stacked-Patch Antennas, ” Automatika, Vol. 48,  pp. 27-34,  2007.