Title
Projektovanje integrisanih štampanih antenskih struktura i 3D reflektora sa potisnutim bočnim listovima zračenja
Creator
Milijić, Marija R. 1978-
Copyright date
2015
Object Links
Select license
Autorstvo 3.0 Srbija (CC BY 3.0)
License description
Dozvoljavate umnožavanje, distribuciju i javno saopštavanje dela, i prerade, ako se navede ime autora na način odredjen od strane autora ili davaoca licence, čak i u komercijalne svrhe. Ovo je najslobodnija od svih licenci. Osnovni opis Licence: http://creativecommons.org/licenses/by/3.0/rs/deed.sr_LATN Sadržaj ugovora u celini: http://creativecommons.org/licenses/by/3.0/rs/legalcode.sr-Latn
Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 14.03.2016.
Other responsibilities
mentor
Milovanović, Bratislav D.
član komisije
Dončov, Nebojša 1970-
član komisije
Marković, Vera 1956-
član komisije
Maleš-Ilić, Nataša 1968-
član komisije
Stanković, Zoran 1968-
Academic Expertise
Tehničko-tehnološke nauke
University
Univerzitet u Nišu
Faculty
Elektronski fakultet
Group
Katedra za telekomunikacije
Alternative title
Modelling integrated printed antenna structures and 3D reflectors with suppressed side lobe radiation pattern
Publisher
[M. R. Milijić]
Format
XXV, 171 list
description
Electrical and Computer Engineering,
Telecommunications
Abstract (en)
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.
Authors Key words
printed antenna array, pentagonal dipoles, symmetrical
microstrip technique, tapered feed network, side lobe
suppression, beamforming
Authors Key words
štampani antenski nizovi, pentagonalni dipoli, simetrična mikrostrip tehnika, tejperovana napojna mreža, slabljenje bočnih lobova, oblikovani dijagram zračenja
Classification
621.396.67+[621.37:537-963]:004.92(043.3)
Type
Elektronska teza
Abstract (en)
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.
“Data exchange” service offers individual users metadata transfer in several different formats. Citation formats are offered for transfers in texts as for the transfer into internet pages. Citation formats include permanent links that guarantee access to cited sources. For use are commonly structured metadata schemes : Dublin Core xml and ETUB-MS xml, local adaptation of international ETD-MS scheme intended for use in academic documents.
