Povećanje snage i korisnosti u radio-frekvencijskim pojačalima snage

master's thesis

• Title (english): Improvement of output power and efficiency in radio-frequency power amplifiers
• Author: Dominik Dobrijević
• Mentor: Tomislav Suligoj (mentor)
• Committee member: Tomislav Suligoj (predsjednik povjerenstva)
• Committee member: Dubravko Babić (član povjerenstva)
• Committee member: Marko Koričić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2020-07-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U ovom radu sistematizirana je izvedba radio-frekvencijskih pojačala za primjenu u bežičnim komunikacijama. S naglaskom na frekvenciju nosioca iznosa 2,4 GHz, projektirana su pojačala snage klase A i F. Uspoređena je djelotvornost prilagodnih mreža s koncentriranim i distribuiranim komponentama. Demonstrirane su metode naknadnog ugađanja projektiranih sklopova. S ciljem postizanja veće izlazne snage ispitana je paralelna arhitektura pojačala korištenjem hibridnih sprežnika. Dobivena pojačala su karakterizirana i uspoređeno s obzirom na ključne parametre.

Abstract (english)

In this thesis, the design radio frequency amplifiers for use in wireless communications is systematized. Class A and F amplifiers were designed for usage in the 2,4 GHz frequency band. The effectiveness of matching networks using concentrated and distributed components is compared. Subsequent tuning methods for amplifiers are demonstrated. In order to achieve a higher power output, a parallel amplifier architecture using hybrid couplers is tested. Key parameters of the fabricated power amplifiers were measured and compared.

• Keywords: Pojačala snage; HCBT; Klasa A; Klasa F; Korisnost; Upravljanje harmonicima; Load-Pull; Bežične komunikacije
• Keywords (english): Power amplifiers; HCBT; Class A; Class F; Efficiency; Harmonic control; Load-Pull; Wireless communications
• Language: english
• URN:NBN: urn:nbn:hr:168:212395
• 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 09:55:21