High Frequency Applications Laboratory

Short History

Since an adequate room has been granted for the organization of its activities, we have been continually equipping it with adequate hardware and software both for the purpose of scientific research and student education.

In the period from 2011 to 2016, about 15 students per year were regularly getting their education through hands-on assignments within the activities of the lab on the undergraduate and graduate level. In some years, we also had students from France doing their summer internships (5 students from the University of Nantes, in three consecutive years) and we also had a student from India (Indian Institute of Technology). 

Today, the laboratory is equipped with equipment that can support activities in various scientific research topics and student graduation theses.


The primary activities of the lab are oriented towards research and teaching in the fields of high-frequency applications, which include:

  • analysis and design of
    • antennas
    • ... and other microwave circuits such as microwave filters and power dividers
  • analysis of electromagnetic wave propagation
  • algorithms and circuits for the Internet of things (IoT)
  • algorithms for applied electromagnetics (advanced antenna system control, usage of FPGA circuits, characterization of dielectric properties of materials, remote control of measurement instrumentation in real time etc.)
  • computational electromagnetics and electromagnetic modeling using commercial CAD tools or writing our own codes
  • analysis of communication networks.

In a broader sense, as means to support the primary applications, and a complementary part to it, we occassionally also build:

  • web applications
  • mobile applications.

Lab Members

Current Activities

Past Activities

Select Publications


Xie, Y., Raj, A. N. J., Hu, Z., Huang, S., Fan, Z., and Joler, M. "A Twofold Lookup Table Architecture for Efficient Approximation of Activation Functions," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 28, no. 12, pp. 2540-2550, Dec. 2020, doi: 10.1109/TVLSI.2020.3015391.

Joler, M., Kolonić, A. and Boljkovac, M. (2020) "A Wideband Circularly Polarized Jeans-Based Antenna at 2.45 GHz," Open Journal of Antennas and Propagation, 8, 1-18. doi: 10.4236/ojapr.2020.81001.

M. Joler, A. Berkarić, and V. Klen, “Testing an Arduino-based Approach for Full-Duplex Voice Communication and Body-Parameter Sensing Electronics for Use with Smart Clothing,” International Journal of Antennas and Propagation, vol. 2019, Article ID 8598912, 8 pages, May 2019, DOI: 10.1155/2019/8598912.

M. Joler and M. Boljkovac, "A Sleeve-Badge Circularly Polarized Textile Antenna," IEEE Transactions on Antennas and Propagation, vol. 66, issue 3, March 2018, pp. 1576-1579.

M. Joler and J. Kučan, "Impact of Slot Parameters on the Three Resonant Frequencies of a Rectangular Microstrip Antenna: Study of the impact of the slot length, width, and position," IEEE Antennas & Propagation Magazine, vol. 57, issue 4, August 2015, pp. 48-63, DOI: 10.1109/MAP.2015.2453888.

M. Joler, "Self-recoverable antenna arrays," IET Microwaves, Antennas & Propagation, vol. 6, issue 14, November 2012, pp. 1608-1615.

M. Joler, “How FPGAs Can Help Create Self-Recoverable Antenna Arrays,” International Journal of Antennas and Propagation, vol. 2012, Article ID 196925, 10 pages, 2012. doi:10.1155/2012/196925.


M. Joler, "Challenges Toward Design and Fabrication of Smart(er) Clothing," The Fourth International Conference on Industrial Informatics - Computing Technology, Intelligent Technology, Industrial Information Integration (ICIICII 2020), Shantou University, China, December 18-19, 2020, online conference, invited speaker.

M. Joler, "Towards a Smart Jacket: Integration of Electronics Challenge," 18th International Conference on Sensor Networks and Signal Processing (SNSP 2018), Xi'an, China, October 28-31, 2018, Conference Proceedings, invited talk.

M. Joler and D. Hodanić, "Interpolative Computation of Two Slot Dimensions in a Rectangular Microstrip Antenna Given the Mode Number and the Resonant Frequency," 24th International Conference on Software, Telecommunications, and Computer Networks, SoftCOM 2016, Split, Croatia, September 22-24, 2016, pp. 1-5, DOI: 10.1109/SOFTCOM.2016.7772153.

M. Joler and B. Štih, "A 3D Computational Model for Analysis of Wireless Power Transfer System Based on the Magnetic Resonance Coupling Method," International Conference on Electromagnetics in Advanced Applications (ICEAA 2015), Torino, Italy, September 7-11, 2015, pp. 1247 - 1250, DOI: 10.1109/ICEAA.2015.7297317.

M. Joler, D. Hodanić, and G. Šegon, "A MATLAB Algorithm for Evaluation of a Rectangular Microstrip Antenna Slot Dimensions Given the Resonant Frequency," IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (IEEE APWC 2015), September 7-11, 2015, pp. 1243 - 1246, DOI: 10.1109/APWC.2015.7300203.

J. Kučan and M. Joler, "Impact of slot dimensions on the resonant frequencies of rectangular microstrip antennas," 21st International Conference on Applied Electromagnetics (ICECom) 2013, Dubrovnik Croatia, 14-16 October 2013, pp. 1-5, DOI: 10.1109/ICECom.2013.6684758.

M. Joler, D. Malnar, S.E. Barbin, "Real-Time Performance Considerations of an FPGA-Embedded Genetic Algorithm for a Self-Recovery of an Antenna Array," 2010 ICECom, 20th International Conference on Applied Electromagnetics and Communications, Dubrovnik, Croatia, 20-23 September, 2010, Proceedings, pp. 1-4.

M. Joler, D. Malnar, S.E. Barbin, "An FPGA-enhanced genetic algorithm for mitigation of a flawed array radiation," 2010 ICEAA, International Conference on Electromagnetics in Advanced Applications, Sydney, Australia, 20-24 September, 2010, Proceedings, pp. 616-619.

D. Malnar, M. Joler, C.G. Christodoulou, "Embedding an Array Self-Recovery Algorithm into an FPGA Controller," 2010 IEEE AP-S International Symposium on Antennas and Propagation and 2010 USNC/CNC/URSI Meeting, Toronto, ON, Canada, 11-17 July, 2010, Proceedings, pp. 1-4.

E. Al Zuraiqi, M. Joler, C.G. Christodoulou, "Neural Networks FPGA Controller for Reconfigurable Antennas," 2010 IEEE AP-S International Symposium on Antennas and Propagation and 2010 USNC/CNC/URSI Meeting, Toronto, ON, Canada, 11-17 July, 2010, Proceedings, pp. 1-4.

M. Joler, C.G. Christodoulou, “On the Development of a Self-Recoverable Antenna System,” 2009 IEEE Antennas and Propagation Society International Symposium, APSURSI'09, Charleston, SC, 1-5 June 2009, Proceedings, pp. 1-4.

Lab Alumni

Abbreviations: CE = computer engineering,  EE = electrical engineering

Graduate Theses

  1. 2020 Poropat, Dante: An Analysis of a Phone Call Quality over the VoIP Protocol, (CE)

  2. 2018 Balent, Adrijana: A mobile application for calculation of transmission line parameters, (CE)

  3. 2018 Ibrahimagić, Denis: A Computer-controlled RF Spectrum Analyzer using LabVIEW, (CE)

  4. 2018  Lacković, Nikola: A Computer-controlled oscilloscope using LabVIEW, (CE).

  5. 2017 Vuković, Sandi: Communication protocols for the Internet of Things, (CE).

  6. 2017 Suljić, Kristijan: A Web Application for simulation of ASK, FSK, and PSK modulation, (CE).

  7. 2016 Zorić, Juraj: Development of mobile applications using technologies for web application development, (CE).

  8. 2016 Bikić, Dino: Testing Near Field Communication and Bluetooth Low Energy Technologies on Android Devices, (CE).

  9. 2016 Sulovsky, Boris: Implementation of reverse geocoding and location tracking within a mobile application, (CE).

  10. 2015 Štih, Boris: A Computational Model For Analysis of Wireless Power Transfer, (EE).

  11. 2014 Baćac, Nikola: An FDTD-based Code for Analysis of Acoustic Wave Propagation in an Inhomogeneous Space, (EE).

  12. 2014 Kolonić, Anamaria: Design and Analysis of a Circularly Polarized Textile Antenna Operating in the E Band, (EE).

  13. 2013 Kučan, Joško: Analysis of the Impact of Slot Dimensions on the Resonant Frequencies of Rectangular Microstrip Antennas, (EE).

  14. 2011 Bojčić, Ivo: Design of Multi-sectional Binomial Impedance Transformer, (EE).

  15. 2011 Miljenović, Teo: Application of a Transceiver Based on ZigBee Standard, (EE).

  16. 2011 Smolčić, Dalibor: Impact of the Shunt Resistor Assembly on the Performance of the Wilkinson Transformer, (EE).

Undergraduate Theses

  1. 2018 Krajcar, Filip: A web application for computation of parameters of radio-propagation models, (CE).

  2. 2017 Batistić, Luka: A comparison of WebSocket protocol and long-polling technique in the context of communication between Android client and a remote server,  (CE).

  3. 2017 Ćelić, Ivan: Web application for procurement management, (CE).

  4. 2017 Herak, Simone: A Web System for the Management of Service Activities Supply and Demand, (CE).

  5. 2017 Ilić, Dino: Single page web application for online judge challenge management, (CE).

  6. 2017 Levačić, Leon: Server Application for WebSocket Protocol, (CE).

  7. 2017 Skoki, Arian: A Web System for Shift Work Organization and Control Based on Scheduling Management, (CE).

  8. 2017 Tahirović, Emrah: Mobile Applications Contact-free Control Based on Built-in Sensor Data, (CE).

  9. 2016 Bradičić, Antonio:  Isolated and reproducible application environments based on the Docker containers, (CE).

  10. 2016 Brdar, Leo: REST API as a single-page application backend, (CE).

  11. 2016 Carta, Vanessa: An application for design of impedance matching using a single-stub tuning technique, (CE).

  12. 2016 Čop, Julijan, HTTP/2 - a protocol designed for a modern web, (CE).

  13. 2016 Fafanđel, Erika: A web application for a design of a binomial impedance transformer, (CE).

  14. 2016 Gojak, Tina: The client side of a single-page application, (CE).

  15. 2016 Klarić, Ivona:  A web calculator of transmission lines parameters, (CE).

  16. 2016 Mohović, Marino: A simulation of a plane electromagnetic wave incidence on a dielectric medium boundary, (CE).

  17. 2015 Balent, Andrijana: Development of a simple web content management system.

  18. 2015 Bošković-Pavković, Ivan: A web application for generation of CV.

  19. 2015 Mušković, Renato: A web application for parameter calculation of L-networks for impedance transformation.

  20. 2015 Pavleković, Renato: A web application for administrative management of the graduation theses assignment.

  21. 2014 Batistić, Luka: Rent Web 2 – Advanced Features in the Application for Evaluation of Participants on the Rental Real Estate Market, (CE).

  22. 2014 Čerljenko, Ricardo: A Web Application for Electronic Voting, (CE)

  23. 2014 Marmilić, Teo: A Web Application for Inventory of the Lab Equipment, (CE) 

  24. 2014 Milaković, Ivan: A support application for management of a small enterprise.

  25. 2014 Tahirović, Emrah: A Web Application for Presentation and Booking of Tourist Appartments, (CE).

  26. 2013 Fabeta, Tomislav: An Interactive Web-page for the Smith Chart-based Analysis (CE).

  27. 2013 Prodić, Nataša: The Rent Web – an Appliction for Evaluation of Participants on the Rental Real Estate Market, (CE).

  28. 2013 Zorić, Juraj: Advance Features of Classroom Reservation Calendar and the Administrator Dashboard, (CE).

  29. 2012 Dunković, Paolo: An Application for Administration of Teaching Load of the University Instructors, (CE).

  30. 2012 Reščić, Luka: An Algorithm for Balancing of Patient Waiting Lists in a Healthcare System, (CE).

  31. 2012 Štulina, Mate: A Web Application for Management of Sport Centers Locations, (CE).

  32. 2011 Barak, Rene: An Algorithm for Advanced Searching of Available Periodic Slots in a Calendar, (CE).

  33. 2011 Krstanović, Filip: Implementation of the https Protocol in Interactive Web Pages, (CE).

  34. 2011 Matušan, Katica: A Programmable Attenuator of RF Signal, (EE).

  35. 2011 Varljen, Jan: An Advanced Web Interface of a Calendar and the Administrator Dashboard, (CE).

  36. 2011 Vidović, Aleksandar: An Application for the Administration of Graduation Theses, (CE).

  37. 2010 Blažević, David: An RFID Lock, (EE).

  38. 2010 Božić, Vedran: Analysis of Antenna Array Using an FPGA Chip Programmed in LabVIEW Programming Language, (EE).

  39. 2010 Kolonić, Anamaria: Characteristics of Biosensors for Applications in Telemedicine, (EE).

  40. 2009 Miljenović, Teo: MEMS as a Switch in Reconfigurable Planar Antennas, (EE).

  41. 2009 Vuković, Nardi: PIN Diode as a Phase Shifter, (EE).

Head Assoc. Prof. Mladen Tomić person.image.file.alt
+385 51 505712, int. 5712 (Office)