o:1238 Projektovanje integrisanih štampanih antenskih struktura i 3D reflektora sa potisnutim bočnim listovima zračenja Modelling integrated printed antenna structures and 3D reflectors with suppressed side lobe radiation pattern : doctoral dissertation sr The significant expansion of research, development and application of microwave printed antenna structures has been noticed in recent decades. Printed antenna arrays have various advantages over conventional antenna systems as their low cost, low weight, smaller price of production, great reproducibility and the possibility of integration with other microwave circuits. Their main disadvantage is the design and realization of printed antennas with high side lobe suppression (SLS). There are several problems in realization of printed antenna arrays with relatively high side lobe suppression. The main of them are: tolerances in fabrication, mutual coupling between radiating elements, limitations in feasibility of feeding network realization, surface wave effect as well as parasitic radiation from a feeding network. The mentioned limitations can be overcome using antenna arrays with wideband printed pentagonal dipoles. These dipoles operate on the second resonance. The dipole’s impedance varies with frequency very slow causing greater tolerances in fabrication which is of crucial importance for arrays with high side lobe suppression. The dipoles and feeding network are designed using a symmetrical (balanced) microstrip technique. Further, due to the fact that feed network is symmetrical and consists of symmetrical balanced microstrip lines parasitic radiation from it is reduced. The dipoles are axially placed decreasing their mutual impedance. 533865366 91552101 4510 91552100 533865366 2017-01-26T15:45:47.053Z 45 no 46 mentor Marija R. 1978- Milijić 2015 63 mentor Bratislav D. Milovanović 2015 63 član komisije Nebojša 1970- Dončov 2015 63 član komisije Vera 1956- Marković 2015 63 član komisije Nataša 1968- Maleš-Ilić 2015 63 član komisije Zoran 1968- Stanković 2015 XXV, 171 list 16299276 http://phaidrabg.bg.ac.rs/o:1238 no yes 2 2017-01-26T15:45:47.320Z 70 printed antenna array, pentagonal dipoles, symmetricalmicrostrip technique, tapered feed network, side lobesuppression, beamforming štampani antenski nizovi, pentagonalni dipoli, simetrična mikrostrip tehnika, tejperovana napojna mreža, slabljenje bočnih lobova, oblikovani dijagram zračenja 621.396.67+[621.37:537-963]:004.92(043.3) 1738 18A03 2015