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master's thesis
Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području
Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. urn:nbn:hr:179:083227
Fišić, Ana
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Electronics and Computing

Institutional repository: Repository of the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture

Cite this document

Fišić, A. (2021). Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području (Master's thesis). Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:083227

Fišić, Ana. "Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:083227

Fišić, Ana. "Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:083227

Fišić, A. (2021). 'Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 12 July 2024, https://urn.nsk.hr/urn:nbn:hr:179:083227

Fišić A. Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2021 [cited 2024 July 12] Available at: https://urn.nsk.hr/urn:nbn:hr:179:083227

A. Fišić, "Proračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području", 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:179:083227

Metadata
TitleProračun transmitirane gustoće snage u višeslojnom modelu tkiva uslijed izloženosti zračenju u GHz području
Title (english)Calculation of transmitted power density in a multi-layer tissue model due to radiation exposure in the GHz band
AuthorAna Fišić
MentorDragan Poljak https://orcid.org/0000-0003-1205-4842 (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Electronics and Computing)
Split
Defense date and country2021-09-17, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Telecommunications and Informatics
Abstract
U ovom radu provodi se proračun transmitirane gustoće snage (Transmitted Power Density TPD) u jednostavnom modelu ljudskog tkiva zasnovanom na planarnoj višeslojnoj sredini. Kao izvor zračenja koristila se dipol antena postavljena horizontalno iznad promatranog modela. Frekvencijsko područje koje se promatralo pri proračunu je 3 GHz – 10 GHzs korakom 0.5 GHz, te 10 GHz – 60 GHz s korakom 5 GHz. TPD se definira kao integral kvadrata apsolutne vrijednosti polja unutar biološkog tkiva duž odabrane osi, u ovom slučaju osi z. Da bi se odredilo električno polje izračeno u okolni prostor potrebno je prethodno izračunati raspodjelu struje duž žice, što je moguće napraviti na dva načina – analitički i numerički. Analiza se provela za slučaj pretpostavljenje sinusne raspodjele struje, te struje dobivene numeričkim proračunom rješavanjem Pocklingtonove integro-diferencijalne jednadžbe primjenom metode rubnih elemenata. Kod proračuna transmitiranog polja korišteni su Fresnelovi izrazi za koeficijente transmisije i refleksije kojima su obuhvaćena svojstva višeslojnog modela tkiva. Napravljen je proračun TPD-a za dvoslojni i troslojni model ljudskog tkiva te su dobiveni rezultati uspoređeni s analitičkim i numeričkim rezultatima dostupnim u relevantnoj literaturi.
Abstract (english)
In this paper, the calculation of Transmitted Power Density TPD in a simple human tissue model based on a planar multilayer medium is performed. A dipole antenna placed horizontally above the observed model was used as the radiation source. The frequency range observed in the calculation is 3 GHz - 10 GHz with a step of 0.5 GHz, and 10 GHz - 60 GHz with a step of 5 GHz. TPD is defined as the integral of the square of the absolute value of the field within the biological tissue along the selected axis, in this case the z axis. In order to determine the electric field radiated into the surrounding space, it is necessary to previously calculate the current distribution along the wire, which can be done in two ways - analytically and numerically. The analysis was performed for the case of assuming a sinusoidal current distribution, and the current obtained by numerical calculation by solving the Pocklington integro-differential equation using the boundary element method. In the calculation of the transmitted field, Fresnel expressions were used for the transmission and reflection coefficients, which included the properties of the multilayer tissue model. A calculation of the TPD for the two-layer and three-layer model of human tissue was made and the obtained results were compared with the analytical and numerical results available in the relevant literature.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:083227
Study programmeTitle: Communications and Information Technology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka komunikacjske i informacijske tehnologije (magistar/magistra inženjer/inženjerka komunikacjske i informacijske tehnologije)
Type of resourceText
File originBorn digital
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Created on2022-10-14 10:07:44