prikaz prve stranice dokumenta Dynamic beamwidth control in partially reflective surface antennas
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doctoral thesis
Dynamic beamwidth control in partially reflective surface antennas
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2011. urn:nbn:hr:168:741809
Debogović, Tomislav
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Communication and Space Technologies

Cite this document

Debogović, T. (2011). Dynamic beamwidth control in partially reflective surface antennas (Doctoral thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:741809

Debogović, Tomislav. "Dynamic beamwidth control in partially reflective surface antennas." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2011. https://urn.nsk.hr/urn:nbn:hr:168:741809

Debogović, Tomislav. "Dynamic beamwidth control in partially reflective surface antennas." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2011. https://urn.nsk.hr/urn:nbn:hr:168:741809

Debogović, T. (2011). 'Dynamic beamwidth control in partially reflective surface antennas', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 22 September 2021, https://urn.nsk.hr/urn:nbn:hr:168:741809

Debogović T. Dynamic beamwidth control in partially reflective surface antennas [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2011 [cited 2021 September 22] Available at: https://urn.nsk.hr/urn:nbn:hr:168:741809

T. Debogović, "Dynamic beamwidth control in partially reflective surface antennas", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2011. Available at: https://urn.nsk.hr/urn:nbn:hr:168:741809

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Metadata
TitleDynamic beamwidth control in partially reflective surface antennas
Title (croatian)Dinamičko upravljanje širinom glavne latice kod antena s djelomično reflektirajućom površinom
AuthorTomislav Debogović
MentorJuraj Bartolić (mentor)
MentorJulien Perruisseau-Carrier (komentor)
strani drzavljanin: Nije dostupno
Committee memberZvonimir Šipuš (predsjednik povjerenstva)
Committee memberAnja Skrivervik (član povjerenstva)
strani drzavljanin: Nije dostupno
Committee memberDavor Bonefačić (član povjerenstva)
Committee memberSilvio Hrabar (član povjerenstva)
Committee memberMiroslav Joler (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Communication and Space Technologies)
Zagreb
Defense date and country2011-11-18, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Radio Communications
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
In this work, a novel class of antennas, namely the partially reflective surface (PRS) antennas with dynamic beamwidth control, is investigated. It was found that the dynamic beamwidth control can be achieved by embedding varactor diodes or RF-MEMS switches in a PRS. These elements enable variation of the PRS reflection coefficient, which in turn causes directivity and beamwidth of the antenna to change. A mathematical model sufficient for a good definition of the antenna properties and requirements on the antenna design is developed. A number of specific types of reconfigurable PRS antennas are studied and validated using a full-wave simulator. For the purpose of the efficient full-wave analysis, a modelling procedure is developed. The procedure yields accurate results obtained in a short period of time. Using the modelling procedure, array-fed PRS antennas with scanning capability and bandwidth enlargement strategies are explored. Finally, theoretical key results are confirmed by measurements.
Abstract (croatian)
U ovom je radu istražen jedan novi tip antena. To su antene s djelomično reflektirajućom površinom koje imaju mogućnost dinamičkog upravljanja usmjerenošću, odnosno širinom glavne latice. Spomenuto dinamičko upravljanje postiže se ugradnjom kapacitivnih dioda ili RF-MEMS prekidača u strukturu djelomično reflektirajuće površine. Promjena napajanja tih elemenata uzrokuje promjenu koeficijenta refleksije djelomično reflektirajuće površine, što u konačnici rezultira promjenom usmjerenosti i širine glavne latice antene. U radu je predstavljen matematički model koji s dovoljnom točnošću predviđa kritične značajke i s pomoću kojega se lako mogu definirati glavni zahtjevi na konstrukciju ovakvih antena. Pomoću punovalnog simulatora je proučavan i evaluiran određeni broj antena s upravljanjem širinom glavne latice. U svrhu učinkovite punovalne analize razvijen je i postupak modeliranja djelomično reflektirajuće površine koji se zasniva na supstituciji ekvivalentnom uniformnom površinom. Taj je model onda korišten i za dodatna istraživanja, kao što su mogućnost zakretanja glavne latice antene te proširenje frekvencijskog pojasa. Konačno, glavni teorijski rezultati su potvrđeni mjerenjima.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:168:741809
ProjectNumber: 036-0361566-1573
Title: Višefunkcijske antene u komunikacijskim i radarskim sustavima
Leader: Juraj Bartolić
Jurisdiction: Croatia
Funder: MZOS
Funding stream: ZP
Study programmeTitle: Doctoral study programme "Electrical Engineering and Computing"
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
Catalog URLhttp://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=37188
Type of resourceText
Extent196 str ; 30 cm
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
RepositoryFER Repository
Created on2019-07-03 08:20:54

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