Radiofrekvencijski sustav za efikasan bežični prijem jednostavnih podataka

undergraduate thesis

• Title (english): Radio-frequency Wireless System for Efficient Receiving of Simple Data
• Author: Iva Kalšan
• Mentor: Tomislav Suligoj (mentor)
• Committee member: Tomislav Suligoj (predsjednik povjerenstva)
• Committee member: Josip Žilak (član povjerenstva)
• Committee member: Filip Bogdanović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2021-09-08, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Sustav za bežični prijenos jednostavnih podataka sastoji se od oscilatora, kodera sklopa za napajanje pojačala snage, pojačala snage, odašiljačke i prijemne antene, niskošumnog pojačala, filtra te sklopa za dekodiranje signala.
Detaljnije su obrađeni filtar i sklop za dekodiranje koji se nalaze na prijemnoj strani sustava. Vrijednosti komponenata koje čine niskopropusni filtar (dva kondenzatora i zavojnica) odredile su se simulacijama s-parametara u programu ADS. Sklop za dekodiranje sastoji se od detektora ovojnice (demodulira amplitudno-modulirani signal), komparatora (ukoliko je bio poslan podatak izlaz komparatora je 5V, a ako nije bio izlaz je 0V) te dekodera s LED diodama spojenim na njegove podatkovne izlazne pinove. Ovisno o tome koja je sklopka na ulazu sustava pritisnuta, svijetlit će odgovarajuća LED dioda.

Abstract (english)

The radio-frequency wireless system for efficient transmission of simple data consists of an oscillator, an encoder, a power supply circuit for the power amplifier, a power amplifier, a transmitting and a receiving antenna, a low-noise amplifier and a signal decoding circuit.
The filter and the decoding circuit on the receiving side of the system are explained in more detail. The values of the components that make the low-pass filter (two capacitors and an inductor) were determined by simulating s-parameters of the filter in the ADS program. The decoding circuit consists of an envelope detector (demodulates the amplitude-modulated signal), a comparator (if data were sent, its output is 5V and if data weren’t sent, its output is 0V) and a decoder with LED diodes connected to its data output pins. Depending on which switch at the system entry is pressed, the corresponding LED diode will light up.

• Keywords: radiofrekvencijski sustav; 2.4GHz; niskopropusni filtar; detektor ovojnice; komparator; dekodiranje signala
• Keywords (english): radio-frequency system; 2.4GHz; low-pass filter; envelope detector; comparator; signal decoding
• Language: croatian
• URN:NBN: urn:nbn:hr:168:839112
• 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: 2023-01-14 20:44:53