Dynamic beamwidth control in partially reflective surface antennas

Debogović, Tomislav

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

Debogović, Tomislav (2011)

University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Wireless Communications

Cite this document

APA 6th Edition

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

MLA 8th Edition

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

Chicago 17th Edition

Harvard

Debogović, T. (2011). 'Dynamic beamwidth control in partially reflective surface antennas', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 15 July 2020, https://urn.nsk.hr/urn:nbn:hr:168:741809

Vancouver

Debogović T. Dynamic beamwidth control in partially reflective surface antennas [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2011 [cited 2020 July 15] Available at: https://urn.nsk.hr/urn:nbn:hr:168:741809

IEEE

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

Cite this item: https://urn.nsk.hr/urn:nbn:hr:168:741809

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Metadata

Title	Dynamic beamwidth control in partially reflective surface antennas
Title (croatian)	Dinamičko upravljanje širinom glavne latice kod antena s djelomično reflektirajućom površinom
Author	Tomislav Debogović
Mentor	Juraj Bartolić (mentor)
Mentor	Julien Perruisseau-Carrier (komentor) strani drzavljanin: Nije dostupno
Committee member	Zvonimir Šipuš (predsjednik povjerenstva)
Committee member	Anja Skrivervik (član povjerenstva) strani drzavljanin: Nije dostupno
Committee member	Davor Bonefačić (član povjerenstva)
Committee member	Silvio Hrabar (član povjerenstva)
Committee member	Miroslav Joler (član povjerenstva)
Granter	University of Zagreb Faculty of Electrical Engineering and Computing (Department of Wireless Communications) Zagreb
Defense date and country	2011-11-18, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Electrical Engineering Radio Communications
Universal decimal classification (UDC)	621.3 APPLIED SCIENCES. MEDICINE. TECHNOLOGY 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)
Language	english
URN:NBN	urn:nbn:hr:168:741809
Project	Number: 036-0361566-1573 Title: Višefunkcijske antene u komunikacijskim i radarskim sustavima Leader: Juraj Bartolić Jurisdiction: Croatia Funder: MZOS Funding stream: ZP
Study programme	Title: 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 URL	http://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=37188
Type of resource	Text
Extent	196 str ; 30 cm
File origin	Born digital
Access conditions	Closed access
Terms of use
Repository	FER Repository
Created on	2019-07-03 08:20:54

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