| Title | Spektralna djelotvornost kućišta s otvorima |
| Author | Viktorija Alilović |
| Mentor(s) | Vanja Mandrić Radivojević (thesis advisor)
|
| Abstract | Oklapanje elektroničkih (električkih) ureĎaja jedan je od najraširenijih postupaka zaštite ljudi od elektromagnetskog zračenja. TakoĎer, oklapanje osigurava siguran rad ureĎaja uslijed elektromagnetskog polja koja se nalaze u njegovom okruţenju. Djelotvornost oklapanja (eng. shielding effectiveness - SE) definirana je odnosom signala na prijemniku sa i bez oklopa oko njega. Postupci mjerenja djelotvornosti oklapanja na visokim frekvencijama u dalekom području normirani su normom IEEE Std 299-1997.
U okviru diplomskog rada opisane su dvije metode mjerenja djelotvornosti oklapanja: 1. mjerenjem koeficijenta sprege sa i bez oklopa te 2. mjerenjem jakosti E polja sa i bez oklopa s dva različita seta mjerne opreme. Mjerenja djelotvornosti oklapanja izvedena su za dva različita oklopa u obliku kvadra. Oklopi su izraĎeni od bakrenog lima, a na prednjoj stranici oklopa izvedeni su prorez i okrugli otvori. Otvori na zaštitnom oklopu izvedeni su iz razloga što se na realnim zaštitnim oklopima pojavljuju otvori za napojne i informacijske kabele, otvori za ventilaciju, otvori pri izvedbi spojeva oklopa i dr. U zaključnom dijelu rada mjereni rezultati SE usporeĎeni su sa simulacijski dobivenim rezultatima. |
| Keywords | electromagnetic shielding electromagnetic compability shielding effectiveness transmission coefficient attenuation of electromagnetic waves |
| Parallel title (English) | Shielding effectiveness (SE) of enclosure with apertures |
| Committee Members | Vanja Mandrić Radivojević (committee chairperson)
Davor Vinko (committee member)
Slavko Rupčić (committee member)
|
| Granter | Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek |
| Lower level organizational units | Department of Communications
Laboratory for High Frequency Measurements |
| Place | Osijek |
| State | Croatia |
| Scientific field, discipline, subdiscipline | TECHNICAL SCIENCES
Electrical Engineering
Telecommunications and Informatics
|
| Study programme type | university |
| Study level | graduate |
| Study programme | Graduate University Study Programme in Electrical Engineering; specializations in: Communications and Informatics, Power Engineering |
| Study specialization | Communications and Informatics |
| Academic title abbreviation | mag.ing.el. |
| Genre | master's thesis |
| Language | Croatian |
| Defense date | 2018-02-27 |
| Parallel abstract (English) | Electromagnetic shielding is one of the most widely used methods of protecting people from electromagnetic radiation. Also, shielding ensures safe operation of the device due to the electromagnetic field in its environment. Shielding effectiveness (SE) is defined by the ratio of signal on the receiver with and without the shield around it. High frequency shielding effectiveness measurements in a far field area are standardized by IEEE Std 299-1997.
Within the scope of the thesis, two methods of measuring the effectiveness of shielding are described: 1. by measuring the coefficient of the with and without the shield; and 2. by measuring the strength of the E-field with and without the shield with two different sets of measuring equipment. Shielding effectiveness measurements were made for two different shapes of rectangular enclosure. The enclosures are made of copper sheets, and on the front of the enclosure are slit and round apertures. The apertures on the protective enclosure are
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derived from the fact that in the real protective enclosures there are openings for information and supply cables, ventilation openings, openings for shield joints etc. In the final part of the work, the measured results are compared with the simulation results obtained |
| Parallel keywords (Croatian) | oklapanje električnih ureĎaja elektromagnetska kompatibilnost djelotvornost oklapanja koeficijent sprege prigušenje EM vala |
| Resource type | text |
| Access condition | Open access |
| Terms of use |  |
| URN:NBN | https://urn.nsk.hr/urn:nbn:hr:200:394715 |
