Realizacija spektralnega analizatorja in analizatorja vezij na razvojni platformi MiŠKo 3

Iuliano, Danijel (author), Pirc, Matija (mentor)

Cilj diplomske naloge je bil ustvariti prilagodljiv in cenovno ugodnejši spektralni analizator z višjim frekvenčnim območjem od tistih, ki ga ponujajo aplikacije za telefone. Deluje na razvojni platformi MiŠKo 3. Poleg spektralnega analizatorja, nam platforma služi še za merjenje amplitudnega odziva vezij in za prikaz signala v časovnem prostoru. V diplomski nalogi je opisana teorija spektralne analize s poudarkom na Fourierevi transformaciji in vrsti. Delo zajema izgradnjo tiskanega vezja, ki se ga uporabi kot dodatek na sistemu MiŠKo. Poleg izgradnje smo razvili programsko opremo, ki je razložena s pomočjo diagramov poteka. Eksperimentalno smo potrdili, da spektralni analizator dovolj natančno meri amplitudni spekter signala, sploh pri izbiri flat-top okenske funkcije, za katerega je značilna majhna napaka kolebanja. Napake so v povprečju okoli 2,2 mV, kar je precej natančno. Prav tako smo zadovoljni z izmerjeno obliko prenosne funkcije.

• Language: Slovenian
• Keywords: spektralni analizator, analizator vezij, tiskano vezje, diagram poteka, MiŠKo
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FE - Faculty of Electrical Engineering
• Year: 2025
• PID: 20.500.12556/RUL-168230
• Publication date in RUL: 03.04.2025

Secondary language

• Language: English
• Title: Implementation of a Spectrum Analyzer and a Network Analyzer on the MiŠKo 3 Development Platform

Abstract

The goal of this thesis was to create a flexible and more affordable spectral analyser with a higher frequency range than those offered by mobile applications. It operates on the MiŠKo 3 development platform. In addition to functioning as a spectral analyser, the platform is also used for measuring the amplitude response of circuits and displaying signals in the time domain. The thesis describes the theory of spectral analysis, with an emphasis on Fourier transformation and series. The work includes the development of a printed circuit board (PCB), which is used as an add-on for the MiŠKo system. Along with the hardware development, we also developed software, which is explained using flowcharts. Experimental results confirmed that the spectral analyser accurately measures the amplitude spectrum of a signal, especially when using a flat-top window function, which is characterized by minimal scalloping error. The measurement errors average around 2.2 mV, which is quite precise. We are also satisfied with the measured shape of the transfer function.

• Keywords: spectral analyser, network analyser, printed circuit board, flowchart, MiŠKo