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master's thesis
Antenski niz za bazne postaje mobilnih komunikacijskih mreža
2021. urn:nbn:hr:179:169524
Puljić, Anton
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Electronics and Computing

Cite this document

Puljić, A. (2021). Antenski niz za bazne postaje mobilnih komunikacijskih mreža (Master's thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:169524

Puljić, Anton. "Antenski niz za bazne postaje mobilnih komunikacijskih mreža." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:169524

Puljić, Anton. "Antenski niz za bazne postaje mobilnih komunikacijskih mreža." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:169524

Puljić, A. (2021). 'Antenski niz za bazne postaje mobilnih komunikacijskih mreža', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 23 March 2023, https://urn.nsk.hr/urn:nbn:hr:179:169524

Puljić A. Antenski niz za bazne postaje mobilnih komunikacijskih mreža [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2021 [cited 2023 March 23] Available at: https://urn.nsk.hr/urn:nbn:hr:179:169524

A. Puljić, "Antenski niz za bazne postaje mobilnih komunikacijskih mreža", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:179:169524

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Metadata
TitleAntenski niz za bazne postaje mobilnih komunikacijskih mreža
Title (english)Antenna array for mobile communication networks base stations
AuthorAnton Puljić
MentorAntonio Šarolić (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Electronics and Computing)
Split
Defense date and country2021-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Abstract
Antena kao neizostavan dio komunikacijskog sustava nalazi jako široke primjene u aplikacijama kao što su mobilni sustavi, radarski sustavi, Internet tehnologije, medicina, industrija, kućne aplikacije, promet itd. Rad antene ovisi o njenim parametrima, a oni o geometriji antene. U radu su opisani parametri antene te je kroz program NEC2 na jednostavan način modelirano više struktura počevši od najjednostavnije, a to je poluvalni dipol, koji nam služi kao referentna antena, pa do konačne složenije strukture kao što je antenski niz, napravljen od više poluvalnih dipola smještenih u istu ravninu. Da bismo povećali dobitak (jedan od parametara antene) nanizali smo više dipola i smjestili ih ispred reflektora kojeg čini ravna bakrena ploča. Na taj način dobili smo antenski niz kakav se koristi u sektorskim antenama baznih postaja. Projektirali smo ga za frekvenciju od 2.4 GHz. Nakon provedenih simulacija, pristupili smo izradi fizičkog modela antenskog niza u laboratoriju te mjerenju dobitka i prilagođenja. Nakon dobivenih i obrađenih rezultata utvrđeno je da antena ipak nije prilagođena na željenu frekvenciju nego na nešto veću, a dobitak također odstupa od simuliranog modela. To može biti rezultat više faktora, pri čemu svakako dominira nesavršenost geometrije izvedbe
Abstract (english)
Antenna, as indispensable part of communication system, finds its applications in various technologies area such as: mobile systems, radar systems, Internet technologies, medicine, industry, home applications, traffic etc. Functionality of an antenna hugely depends on its parameters, while they depend on the antenna geometry. This thesis first describes the antenna parameters. Then we used the program NEC2 to model and simulate several antenna structures, starting with the half-wave dipole as the simplest one, serving as a reference antenna, and ending with the more complex structures like the antenna arrays, made of several half-wave dipole located in the same plane. In order to increase the gain (one of the main antenna parameters) we put several dipoles in front of the reflector, which is made of copper panel. That way we built the antenna array which is commonly used as a sector antenna in base stations. The antenna was designed for the frequency of 2.4 GHz. After performing the simulations, we constructed the physical antenna array in the laboratory and measured its gain and impedance matching. According to the obtained and analyzed results, we found that the antenna is not matched at the designed frequency, but at a higher one. Its measured gain also deviates from the simulated model. These discrepancies may result from several factors, the imperfection of the realized geometry likely being the dominant one.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:169524
Study programmeTitle: Electronics and Computer Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektronike i računalnog inženjerstva (magistar/magistra inženjer/inženjerka elektronike i računalnog inženjerstva)
Type of resourceText
File originBorn digital
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Created on2022-06-17 09:47:26