Group for application and developement of numerical methods in electromagnetism

– prof.dr.sc. Dragan Poljak , Fakultet elektrotehnike, strojarstva i brodogradnje Split
– izv.prof.dr.sc. Vicko Dorić , Fakultet elektrotehnike, strojarstva i brodogradnje Split
– doc.dr.sc. Silvestar Šesnić , Fakultet elektrotehnike, strojarstva i brodogradnje Split

Research areas:

• Electromagnetic radiation and scattering
• Galerkin-Bubnov Indirect Boundary Element Method
• Direct time domain modelling
• Electromagnetic compatibility

Research description:

The group is aimed mostly towards the development of the numerical models for simulation of current distribution along the thin-wire structures illuminated by the electromagnetic waves (scatterer mode), or excited by a voltage generator (radiator mode) . The current distribution is being modeled both in frequency and time domain, with geometries of interest placed in a free space or half-space (above and in the ground).
Frequency domain results are obtained via formulation based on the Pocklington type equation, and can be transformed in time domain using Fast Fourier Transform (FFT) algorithm. Time domain results are also obtained directly via equation of the Hallen type, which is numerically solved using Galerkin-Bubnov Indirect Boundary Equation Method (GB-IBEM).

Contacts with academic and other institutions:

– FESB Split

Description of the current cooperation:

8 Current Contents papers were published, 2 applications for thin wire simulations in frequency and time domain were developed, along with the two books.

Plans for future research:

Research in the field of computer vision applications in robotics. The study of the IoT technology

List of selected research papers:

1. Poljak, Dragan; Antonijević, Siniša; Šesnić, Silvestar; Lallechere, S.; El Khamlichi Drissi, K.
On deterministic-stochastic time domain study of dipole antenna for GPR applications. // Engineering analysis with boundary elements. 73 (2016) ; 14-20 (članak, znanstveni).

2. Antonijevic, Sinisa; Poljak, Dragan.
A Novel Time-Domain Reflection Coefficient Function: TM Case. // IEEE transactions on electromagnetic compatibility. 55 (2013) , 6; 1147-1153 (članak, znanstveni).

3. Poljak, Dragan; Shoory, Abdolhamid; Rachidi, Farhad; Antonijević, Siniša; Sergey, Tkachenko.
Time-Domain Generalized Telegrapher’s Equations for the Electromagnetic Field Coupling to Finite Length Wires Above a Lossy Ground. // IEEE transactions on electromagnetic compatibility. 54 (2012) , 1; 218-224 (članak, znanstveni).

4. Poljak, Dragan; Lucić, Rino; Dorić, Vicko; Antonijević, Siniša.
Frequency domain boundary element versus time domain finite element model for the transient analysis of horizontal grounding electrode. // Engineering analysis with boundary elements. 35 (2011) , 3; 375-382 (članak, znanstveni).

5. Poljak, Dragan; Antonijević, Siniša; El Khamlichi Drissi, Khalil; Kerroum, Kamal.
Transient Response of Straight Thin Wires Located at Different Heights Above a Ground Plane Using Antenna Theory and Transmission Line Approach. // IEEE transactions on electromagnetic compatibility. 52 (2010) ; 108-116 (članak, znanstveni).

6. Antonijević, Siniša; Poljak, Dragan; Brebbia, Carlos A.
Time-domain analysis of multiple straight thin wires in a non-homogeneous medium. // Engineering Analysis with Boundary Elements. 33 (2009) , 5; 627-636 (članak, znanstveni).

7. Christopulos, C.; Zhang, Y.; Paul, J.; Garbe, H.; Batterman, S.; Skrzypczynski, J.; Kucharski, A.A.; Roje, Vesna; Antonijević, Siniša; Dorić, Vicko; Welinder, J.; Rubinstein, A.; Rachidi, F.; Beauvois, V.; Renard, M.; Beerten, P.; Lamedschwander, K.; Preinder, H.; Cecil, S.; Nakovits, T.
Near-field coupling of wireless devices and long communications cables. // IET Science, Measurement & Technology. 2 (2008) , 1; 18-24 (članak, znanstveni).

8. Poljak, Dragan; Antonijević, Siniša; Brebbia, Carlos A.
Time domain modelling of thin wire arrays in the presence of a two media configuration using the boundary element analysis. // Engineering Analysis with Boundary Elements. 31 (2007) , 8; 706-712 (članak, znanstveni).