Projektiranje širokopojasnog niskošumnog pojačala

undergraduate thesis

• Title (english): Design of wideband low-noise amplifier
• Author: Dominik Dobrijević
• Mentor: Tomislav Suligoj (mentor)
• Committee member: Tomislav Suligoj (predsjednik povjerenstva)
• Committee member: Josip Žilak (član povjerenstva)
• Committee member: Željko Osrečki (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2018-09-10, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U ovom radu obrazložena je uporaba niskošumnih pojačala u radio-komunikacijskim primjenama. Predstavljene su mjere određivanja kvalitete pojačala. Korištenjem stečenog znanja određene su ciljane vrijednosti parametara projektiranog pojačala. Osmišljena je metoda dobivanja širokopojasnog niskošumnog pojačala, čiji je ključni dio dodatak otporničke povratne veze. Korištenjem računalnog simulatora elektroničkih sklopova finalizirana je shema pojačala i odabrane su realne komponente. Na temelju tih komponenata projektirana je tiskana pločica. Karakteristike završenog pojačala izmjereni su u laboratoriju, i uspoređene sa simuliranima. Konačno, performanse pojačala evaluirane su korištenjem moduliranog WCDMA signala.

Abstract (english)

In this thesis the usage of low-noise amplifiers in radio communication applications is explained. Amplifier quality measures are presented. Using acquired knowledge, the target values of the projected amplifier are determined. A method of obtaining a broadband low-noise amplifier is derived, the key part of which is the addition of resistive feedback. Using a computer simulation of electronic circuits, the amplifier scheme is finalized, and realistic components were selected. Based on the choice of these components, a printed circuit board was designed. The characteristics of the completed amplifier were measured in the laboratory, and later compared with simulated values. Finally, performance of the designed amplifier was evaluated using modulated WCDMA signals.

• Keywords: niskošumno; širokopojasno; pojačalo; računalni simulator; WCDMA
• Keywords (english): low-noise; wideband; amplifier; computer simulator; WCDMA
• Language: croatian
• URN:NBN: urn:nbn:hr:168:672965
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-03-13 19:56:43