Analiza stabilnosti pojasno-propusnog nefosterovskog negativnog kondenzatora

undergraduate thesis

• Title (english): Analysis of Stability of Band-pass Non-Foster Negative Capacitor
• Author: Nikola Rakić
• Mentor: Silvio Hrabar (mentor)
• Committee member: Silvio Hrabar (predsjednik povjerenstva)
• Committee member: Zvonimir Šipuš (član povjerenstva)
• Committee member: Marko Bosiljevac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2019-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Nefosterovski elementi (negativni kapacitet i negativni induktivitet) su hipotetski
elementi kojima reaktancija pada s porastom frekvencije. U praksi se
nefosterovski elementi realiziraju pomoću aktivnih sklopova od kojih je najpoznatiji
negativni pretvornik impedancije (Negative Impedance Converter - NIC). U ovom
radu se analizira hipotetski apsolutno stabilan pojasno propusni nefosterovski
kondenzator, koji je nedavno predložen u literaturi. Ovakav element se unutar
jednog pojasa ponaša kao negativni kapacitet a izvan njega kao običan pozitivni
induktivitet. Budući da nefosterovski elementi koriste pojačala s povratnom
vezom, često su mreže koje ih sadrže nestabilne. Stoga se u radu također
analizira stabilnost različitih izvedba nefosterovskih elementa, uključenih u
vanjsku pasivnu mrežu.

Abstract (english)

Non'Foster elements (negative capacity and negative inductance) are hypothetical
elements whose reactance falls with increasing frequency. In practice, non-Foster
elements are realized by means of active circuits, the most popular being the
Negative Impedance Converter (NIC). In this paper, a hypothetical absolutely
stable band pass non-Foster capacitor, which was recently proposed in the
literature, is analyzed. Such an element behaves as a negative capacity inside
one band, and outside of it as an ordinary positive inductance. Since non-Foster
elements use amplifiers with feedback, networks containing them are often
unstable. Therefore, the work also analyzes the stability of different designs of non
foster elements included in an external passive network.

• Keywords: analiza stabilnosti; pojasno-propusni nefosterovski element; negativni kapacitet; nefosterovski element; negativni element; negativni pretvornik impedancije; NIC
• Keywords (english): stability analysis; band-pass non-Foster; negative capacitor; non- Foster; non-Foster elements; negative elements; Negative impedance converter; NIC
• Language: croatian
• URN:NBN: urn:nbn:hr:168:790433
• 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: 2020-01-07 21:46:15