Design characterization of multiport electro-optical circuits for broadband voltage measurements in an electromagnetically polluted environment

doctoral thesis

• Title (croatian): Projektiranje i karakterizacija višeprolaznih elektrooptičkih sklopova za širokopojasno mjerenje napona u elektromagnetski zagađenoj okolini
• Author: Hrvoje Štimac
• Mentor: Adrijan Barić (mentor)
• Committee member: Adrijan Barić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Electronics, Microelectronics, Computer and Intelligent Systems); Zagreb
• Defense date and country: 2020, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Broadband electro-optical differential probes for voltage measurements in an electromagnetically polluted environment are designed and characterized. The differential circuit topology is used because of its good immunity to noise. By separating the signal acquisition and signal processing part of the system, a fully isolated measurement system is implemented, where both the measured RF signal and the bias signal are transmitted using an optical connection. The probe circuit consists of the attenuator, the laser, and the bias circuit. Each part of the probe circuit is characterized by performing measurements, electromagnetic and circuit simulations, and circuit modelling. The simple and low cost measurement system is designed for characterization of electrostatic discharge waveforms. Scientific contribution of the doctoral thesis: 1. Methodology combining admittance parameters and mixed-mode scattering parameters for modelling electro-optical devices and for characterizing differential-mode and common-mode response. 2. Differential electro-optical equivalent circuit model of a vertical-cavity surface-emitting laser for common-mode rejection ratio estimation. 3. Design and characterization of multiport broadband electro-optical differential probes for voltage measurements in an electromagnetically polluted environment. 4. Comparative analysis of the floating-ground and connected-ground differential electro-optical voltage probes operating in GHz-range.

Abstract (croatian)

U sklopu rada projektiraju se i karakteriziraju širokopojasne elektrooptičke diferencijske sonde za mjerenje napona u elektromagnetski zagađenoj okolini. Diferencijska topologija sklopa koristi se zbog dobre otpornosti na smetnje. Odvajanjem dijela sustava za mjerenje i obradu signala ostvaruje se potpuno izolirani mjerni sustav, gdje se i mjereni radiofrekvencijski signal i signal napajanja prenose optičkom vezom. Sklop sonde sastoji se od atenuatora, lasera i sklopa za napajanje. Svaki dio sklopa sonde karakterizira se provođenje mjerenja, elektromagnetskih i sklopovskih simulacija te modeliranjem. Ovaj jednostavan mjerni sustav niske cijene dizajniran je za karakterizaciju elektrostatskih izboja. Znanstveni doprinos doktorskog rada: 1. Metodologija za modeliranje elektrooptičkih sklopova i karakterizaciju odziva na diferencijske i zajedničke signale kombinacijom admitancijskih parametara i mješovitih raspršnih parametara. 2. Diferencijski elektrooptički nadomjesni model lasera s vertikalnom rezonantnom šupljinom za procjenu faktora potiskivanja zajedničkog signala. 3. Projektiranje i karakterizacija višeprolaznih širokopojasnih elektrooptičkih diferencijskih sondi za mjerenje napona u elektromagnetski zagađenoj okolini. 4. Usporedna analiza diferencijskih elektrooptičkih naponskih sondi s plivajućom masom i sa spojenom masom za rad u gigahercnom frekvencijskom području.

• Keywords: attenuator; circuit modelling; common-mode rejection ratio (CMRR); common- mode signal; differential voltage measurement; differential-mode signal; electro-optical system; electromagnetic compatibility (EMC); electrostatic discharge (ESD); noise immunity; power-over-fiber (PoF); vertical-cavity surface-emitting laser (VCSEL)
• Keywords (croatian): atenuator; modeliranje sklopova; faktor potiskivanja zajedniˇckog signala (CMRR); zajednički signal; diferencijsko mjerenje napona; diferencijski signal; elektrooptički sustav; elektromagnetska kompatibilnost (EMC); elektrostatski izboj (ESD); otpornost na smetnje; power-over-fiber (PoF); laser s vertikalnom rezonantnom šupljinom (VCSEL)
• Language: english
• URN:NBN: urn:nbn:hr:168:587135
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Catalog URL: http://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=52196
• Type of resource: Text
• Extent: 192 str.
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-03-08 13:40:57