Izvedba vektorskog analizatora mreže za elektromagnetsko induktivno mjerenje značajki tla do 30 MHz

master's thesis

• Title (english): Implementation of Vector Network Analyser for Electromagnetic Inductive Measurement of Soil Properties up to 30 MHz
• Author: Nikolina Ivančan
• Mentor: Darko Vasić (mentor)
• Committee member: Darko Vasić (predsjednik povjerenstva)
• Committee member: Željka Lučev Vasić (član povjerenstva)
• Committee member: Davorin Ambruš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2023-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U okviru ovog diplomskog rada razvijen je instrument s osnovnim funkcionalnostima vektorskog analizatora. Sustav se sastoji od Red Pitaya STEMlab 125-14 razvojne pločice, implementirane programske podrške te dodatne pomoćne analogne instrumentacije. Implementirana programska podrška uključuje automatizirano mjerenje te komunikaciju između računala i razvojne pločice putem serijske UART veze. U svrhu testiranja funkcionalnosti razvijenog instrumenta korišteni su sljedeći DUT-ovi: RC filter, koaksijalni kabel te sustav za mjerenje vodljivosti tla. Izračunate su vrijednosti amplitude i faze DUT-a kao rezultat provedenih mjerenja. Mjerenja su provedena na frekvencijskom području od 1 MHz do 30 MHz i uspoređena su s komercijalnim mrežnim analizatorom. Dobiveni rezultati su ukazali na usporedivost između mjerenja provedenih razvijenim instrumentom i komercijalnim mrežnim analizatorom Fieldfoxom.

Abstract (english)

Within the scope of this master's thesis, an instrument with basic vector network analyzer functionalities has been developed. The system consists of a Red Pitaya STEMlab 125-14 development board, implemented software support, and additional auxiliary analog instrumentation. The implemented software support includes automated measurements and communication between a computer and the development board via a serial UART connection. To assess the functionality of the developed instrument, the following Devices Under Test (DUTs) were utilized: an RC filter, a coaxial cable, and a soil conductivity measurement system. Amplitude and phase values of the DUT were calculated as a result of the conducted measurements. The measurements were carried out in the frequency range from 1 MHz to 30 MHz and compared with a commercial network analyzer, Fieldfox. The obtained results indicated comparability between the measurements conducted using the developed instrument and the commercial network analyzer Fieldfox.

• Keywords: vektorski analizator mreže; Rd Pitaya; Stemlab; prijenosna funkcija; digitalna akvizicija; Matlab
• Keywords (english): Vector network analyzer; Red Pitaya; STEMlab; transfer function; digital acquisition; Matlab
• Language: croatian
• URN:NBN: urn:nbn:hr:168:033980
• 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: 2024-03-28 07:47:25