Karakterizacija naponski upravljanih oscilatora i projektiranje pasivnih mikrovalnih filtara za rad u gigahercnom frekvencijskom području

master's thesis

• Title (english): Characterization of voltage-controlled oscillators and design of passive microwave filters operating in the GHz range
• Author: Tomislav Gregurić
• Mentor: Adrijan Barić (mentor)
• Committee member: Adrijan Barić (predsjednik povjerenstva)
• Committee member: Marko Koričić (član povjerenstva)
• Committee member: Vladimir Čeperić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2021-06-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Analizirane su karakteristike, vrste i primjene naponski upravljanih oscilatora.
Uspoređen je spektar izlaza oscilatora ovisno o metodi dovođenja napona napajanja i
ugađanja. Izrađen je sustav za karakterizaciju s linearnim i prekidačkim regulatorima.
Digitalno je upravljan napon ugađanja korištenjem SPI za linearnu te I2C za
prekidačku regulaciju. Objašnjeno je programiranje mikrokontrolera za navedenu
komunikaciju. Projektirani su niskopropusni mikrovalni filtri granične frekvencije
1.5 GHz. Analiziran je utjecaj filtriranja na izlaz oscilatora.

Abstract (english)

Characteristics, types and applications of voltage controlled oscillators are analysed.
Frequency spectrum of oscillators’ output depending on the power and tuning
method used is compared. System for characterisation using linear and switching
regulators is designed. Tuning voltage is digitally controlled using SPI and I2C
for linear and switching regulators respectively. Microcontroller programming for
the aforementioned communication is described. Low-pass microwave filters with
1.5 GHz cutoff frequency are designed. Effect of filtering on oscillators’ output is
analysed.

• Keywords: naponski upravljani oscilator; regulator; digitalno-analogna pretvorba; mikrokontroler; filtar
• Keywords (english): voltage controlled oscillator; regulator; digital-analog conversion; microcontroller; filter
• Language: croatian
• URN:NBN: urn:nbn:hr:168:759670
• 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: 2023-01-13 12:21:27