Unapređenje stabilnosti nefosterovskog negativnog kondenzatora temeljenog na ultra-brzom operacijskom pojačalu

master's thesis

• Title (english): Stability improvement of non-Foster negative capacitor based on ultra-high-speed OPamp
• Author: Marijo Orečić
• Mentor: Silvio Hrabar (mentor)
• Committee member: Silvio Hrabar (predsjednik povjerenstva)
• Committee member: Juraj Bartolić (član povjerenstva)
• Committee member: Zvonimir Šipuš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-07-09, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Objašnjene su ideje aktivnih i pasivnih metamaterijala, Fosterove i ne-Fosterove mreže. Načinjen je kritički pregled spojeva negativnih pretvornika impedancije u diskretnoj tehnologiji s tranzistorima i tehnologiji s operacijskim pojačalima. Objašnjena je stabilnost LTI sustava i NICeva. Analizirana je stabilnost za jednostavni model negativnog kapaciteta i negativnih kapaciteta realiziranih s idealnim zavisnim naponskim izvorima s jednim i s više polova. Promotren je utjecaj prijenosne linije na nefosterovske sklopove kapaciteta. Analiziran je realni sklop negativnog kondenzatora sa THS4303. Objašnjen je program za računanje polova u Wolfram MathematiciTM . Predložena su poboljšanja na realnom sklopu negativnog kondenzatora, i predložen je model za konačnu izvedbu.

Abstract (english)

Idea of active and passive metamaterial, Foster and Non-Foster network has been explained. Critical review of negative impedance converter has been made, in discrete technology with transistor technology and operational amplifier. Stability of LTI systems and NIC has been explained. Stability of a simple model of the ideal negative capacitor and negative capacitor realized with ideal dependent voltage sources with one or more poles, has been analyzed. Influence of transmission lines on Non-Foster capacitors. Real-life circuit of the negative capacitor with THS4303 has been analyzed. Program for calculating the poles in Wolfram Mathematica has been explained. Improvements to the real negative capacitor are proposed. Final model has been proposed.

• Keywords: Foster; ne-Foster; negativni kondenzator; negativni pretvornik impedancije; metamaterijal; širokopojasno; stabilnost; polovi
• Keywords (english): Foster; non-Foster; negative capacitor; negative impedance converter; metamaterial; broadband; stability; poles
• Language: croatian
• URN:NBN: urn:nbn:hr:168:515767
• Study programme: Title: Information and Communication Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka informacijske i komunikacijske tehnologije (magistar/magistra inženjer/inženjerka informacijske i komunikacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 10:59:30