prikaz prve stranice dokumenta Naponski ugodivi kondenzator za velike signale
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undergraduate thesis
Naponski ugodivi kondenzator za velike signale
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2019. urn:nbn:hr:168:612126
Brubnjak, Mateo
University of Zagreb
Faculty of Electrical Engineering and Computing

Institutional repository: FER Repository

Cite this document

Brubnjak, M. (2019). Naponski ugodivi kondenzator za velike signale (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:612126

Brubnjak, Mateo. "Naponski ugodivi kondenzator za velike signale." Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2019. https://urn.nsk.hr/urn:nbn:hr:168:612126

Brubnjak, Mateo. "Naponski ugodivi kondenzator za velike signale." Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2019. https://urn.nsk.hr/urn:nbn:hr:168:612126

Brubnjak, M. (2019). 'Naponski ugodivi kondenzator za velike signale', Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:168:612126

Brubnjak M. Naponski ugodivi kondenzator za velike signale [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2019 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:168:612126

M. Brubnjak, "Naponski ugodivi kondenzator za velike signale", Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:168:612126

Metadata
TitleNaponski ugodivi kondenzator za velike signale
Title (english)Voltage-controlled capacitor for large signals
AuthorMateo Brubnjak
MentorDubravko Babić (mentor)
Committee memberDubravko Babić (predsjednik povjerenstva)
Committee memberDavor Bonefačić (član povjerenstva)
Committee memberMarko Bosiljevac (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2019-09-02, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Computing
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Abstract
Rad istražuje mogućnost korištenja mikrovalnih transformatora u rasponu 10-1000MHz, za svrhu smanjenja amplitude napona za elemente koji zahtijevaju konstantnu radnu točku, specifično za varaktorske diode. Varaktroske diode bi mogle biti korištene kao naponski ugodivi kondenzatori u krugovima s pojačalima visoke snage. Standardne snage (1-3W) u ovim krugovima stvaraju velike devijacije od radne točke varaktorske diode zbog čega ona postaje veliki izvor nelinearnosti. Rad sadrži razvijeni ekvivalentni model za mikrovalne transformatore koja precizno opisuje ponašanje do prve rezonante frekvencije nakon koje transformator više nije efektrivan. Efikasna metoda za karakterizaciju istog modela koja koristi mjerenja raspršnih parametara je razvijena. Karakterizacija uključuje mjerenje induktiviteta primara i sekundara, prijenosnog omjera te parazitnog kapaciteta koji uzrokuje prvu rezonantnu frekvenciju u mjerenom s21 parametru, nakon koje transformator više nije efektivan.
Abstract (english)
The thesis explores the possibility of using micro-transformers, in the 10-1000MHz range, for the purpose of reducing voltage amplitude for components that require a constant working point, specifically varactor diodes. Varactor diodes are considered for use as voltage-controlled capacitors in tuning circuits for large signal power amplifiers. Normally this is impossible as the signal power (1-3W) in these circuits produces deviations from the varactor diode working point turning it into a large source of non-linearity. An equivalent microwave transformer model was developed that accurately predicts behavior before the first s21 resonance frequency. An efficient method for characterization of this model was developed that uses S-parameter measurements. The method includes determining the inductance of the primary and secondary coil, coupling factor and the parasitic capacitance that causes the first resonant frequency in the measured s21 parameter, beyond which the transformer no longer functions as required.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:168:612126
Study programmeTitle: Electrical Engineering and Information Technology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
Type of resourceText
File originBorn digital
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Created on2020-01-07 17:04:27