prikaz prve stranice dokumenta Mjerenja parametara loksodromske antena
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master's thesis
Mjerenja parametara loksodromske antena
2019. urn:nbn:hr:200:328408
Anić, Ante
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Communications
Laboratory for High Frequency Measurements

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Anić, A. (2019). Mjerenja parametara loksodromske antena (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek. Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:328408

Anić, Ante. "Mjerenja parametara loksodromske antena." Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2019. https://urn.nsk.hr/urn:nbn:hr:200:328408

Anić, Ante. "Mjerenja parametara loksodromske antena." Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2019. https://urn.nsk.hr/urn:nbn:hr:200:328408

Anić, A. (2019). 'Mjerenja parametara loksodromske antena', Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 07 March 2025, https://urn.nsk.hr/urn:nbn:hr:200:328408

Anić A. Mjerenja parametara loksodromske antena [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2019 [cited 2025 March 07] Available at: https://urn.nsk.hr/urn:nbn:hr:200:328408

A. Anić, "Mjerenja parametara loksodromske antena", Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:200:328408

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Metadata
TitleMjerenja parametara loksodromske antena
Title (english)Measurements of the loxodromic antenna parameters
AuthorAnte Anić
MentorSlavko Rupčić (mentor)
Committee memberVanja Mandrić Radivojević (predsjednik povjerenstva)
Committee memberSlavko Rupčić (član povjerenstva)
Committee memberAnđelko Lišnjić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Communications)
(Laboratory for High Frequency Measurements)
Osijek
Defense date and country2019-02-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Radio Communications
Abstract
Ovaj rad se bavi loksodromskom antenom odnosno njezinim glavnim parametrima. Loksodromska antena predstavlja varijaciju helikoidne antene sa promjenjivim radijusom podloge. Napravljena su dva modela loksodromske antene u dvije varijante (antena je pričvršćena za reflektirajuću površinu i antena nije pričvršćena za reflektirajuću površinu). Ti se modeli razlikuju po broju namota te kutu nagiba dok je radijus sfere jednak za oba dva modela. Na svakom modelu antena izvršeno je po jedno mjerenje u horizontalnoj ravnini te po dva mjerenja u vertikalnoj ravnini 49 ovisno o položaju antene. Mjerenjima odnosa stojnih valova VSWR, koeficijenta refleksije S11, jakosti električnog polja i impedancije antene, utvrđeno je da bolje karakteristike pokazuje model sa manjim brojem namota pa tako taj model ima veću ukupnu širinu opsega i prilagođenje impedancije. Veću usmjerenost imaju antene koje su izvedene sa reflektirajućom površinom.
Abstract (english)
This paper deals with loxodromic antenna or its main parameters. Loxodromic antenna is a variation of helix antenna with a variable radius of substrate. Two models of loxodromic antenna have been made in two variants (the antenna is attached to a reflecting surface and the antenna is not attached to a reflecting surface). These models are different by the number of windings and the angle of inclination while the radius of sphere is the same for both models. The measurements of VSWR, S11 reflection coefficient, electric field strength and the input impedance of antenna show that the model with a smaller number of windings has the highest broadband and best impedance matching. Antennae attached to reflecting surface have better directivity. On each antenna model, one measurement was made in a horizontal position and two measurements were made in a vertical position depending on the positon of the antenna.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:328408
Study programmeTitle: Graduate University Study Programme in Electrical Engineering; specializations in: Communications and Informatics, Power Engineering
Course: Communications and Informatics
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike (magistar/magistra inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-09 15:29:00