Karakterizacija kapacitivnog prijenosa signala ljudskim tijelom na fantomima ljudskog tijela korištenjem baterijskih uređaja

master's thesis

• Title (english): Characterization of Capacitive Intrabody Communication on Human Body Phantoms using Battery-Powered Devices
• Author: Lucija Grubeša
• Mentor: Željka Lučev Vasić (mentor)
• Committee member: Željka Lučev Vasić (predsjednik povjerenstva)
• Committee member: Hrvoje Džapo (član povjerenstva)
• Committee member: Dinko Oletić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2023-07-14, Croatia

Abstract

Fantomi su korisni za modeliranje sustava i optimizaciju prije kliničkog ispitivanja na ljudima. S obzirom da se dielektrična svojstva (vodljivost i permitivnost) razlikuju za različita vrsta tkiva, postoji velik broj recepata za izradu fantoma različitih tekstura i za različite frekvencijske raspone. U ovom radu rađena su mjerenja snage primljenog signala kod kapacitivnog prijenosa signala ljudskim tijelom na dvije vrste tekućih i dvije vrste životinjskih fantoma. Za provedbu mjerenja implementiran je kapacitivni mjerni sustav korištenjem baterijskog odašiljača i prijamnika te analizatora spektra FieldFox N9913A. Ispitivanja su provedena na sedam različitih frekvencija i za različite udaljenosti odašiljačkih i prijamnih elektroda. Napravljena je usporedba korištenja raznih vrsta elektroda, različitog broja baluna i različitog načina spajanja odašiljača i prijamnika na mjerne elektrode. Položaji mjernih uređaja na tijelu su bili IB2OB, OB2IB i IB2IB te je pokazano kako imaju slične karakteristike, što je bitno za daljnja istraživanja prijenosa signala ljudskim tijelom.

Abstract (english)

Human body phantoms are useful for system modeling and optimization before human clinical trials. Given that the dielectric properties (conductivity and permittivity) differ for different types of human tissue, there are a large number of recipes for creating phantoms with different textures and for different frequency ranges. In this thesis, measurements of the received signal strength during capacitive intrabody communication (IBC) transmission were made on two types of liquid phantoms and two types of animal phantoms. To perform the measurements, a capacitive measuring system was implemented using the battery-powered transmitter, battery-powered receiver, and FieldFox 9913A spectrum analyzer. Measurements were performed at seven different frequencies and for different distances of the transmitting and receiving electrodes. The comparison was made between the use of several types of electrodes, different numbers of baluns, and different ways of connecting the transmitter and receiver to the measuring electrodes. The positions of the measuring devices on the body were IB2OB, OB2IB, and IB2IB and it was shown that they have similar characteristics, which is important for further intrabody communication research.

• Keywords: prijenos signala ljudskim tijelom; fantom; elektrode; snaga
• Keywords (english): intrabody communication; phantom; electrodes; power
• Language: croatian
• URN:NBN: urn:nbn:hr:168:028556
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-10-11 08:58:47