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Phase shifted harmonic oscillators for practical education
Hudec, Marek ; Petržela, Jiří (oponent) ; Šotner, Roman (vedoucí práce)
This thesis focuses on designing a laboratory preparation for the study of phase-shift oscillators. The first part of the thesis comprises a theoretical discussion regarding the given problem. The laboratory preparation will include two types of oscillator circuits. An operational amplifier will be used as the amplifying element together with an RC feedback loop in one type of circuit whilst the other type will consist of operational transconductance amplifier employed as inverting amplifiers and generating feedback. The second part of the thesis includes the actual design of the preparation. The design process covers construction stage of the preparation, calculation of the component parameters necessary for oscillation to occur, simulations of the individual circuits along with THD analysis as well as with analysis of manufacturing variances. The second part of the thesis also contains the design of a separate block of all-pass filter. The simulation results will be verified experimentally, on a printed circuit board. In the last part of the thesis, I will evaluate and intercompare the theoretical, simulation and practical results.
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Fázovací obvody s moderními funkčními bloky
Horák, Ondřej ; Petržela, Jiří (oponent) ; Dostál, Tomáš (vedoucí práce)
Tato práce se věnuje fázovacím článkům. Postupně bude rozebrán princip fázovacích článků, jejich vlastnosti, návrh n-tého řádu těchto obvodů a následně budou vybrány a popsány některé funkční bloky, pomocí kterých se dají tyto struktury vytvářet. Dále budou FO navrženy a podrobeny simulaci v programu OrCAD PSpice. Nejdříve budou analýzy prováděny s ideálními prvky a potom s prvky reálnými. Dále bude provedena citlivostní, toleranční analýza a bude zkoumán vliv parazitních jevů na parametry obvodu. Po těchto experimentech bude proveden návrh desky plošných spojů. Pro návrh bude vybráno zapojení, které bude vykazovat nejlepší parametry.
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Laboratorní úloha zaměřená na všepropustné fázovací články
Lokaj, Jakub ; Šotner, Roman (oponent) ; Petržela, Jiří (vedoucí práce)
Táto bakalárska práca sa zaoberá teoretickým návrhom a realizáciou fázovacích filtrov. Jedná sa o využitie pasívnych a aktívnych prvkov vo fázovacích obvodoch a následnú aplikáciu v laboratórnom prípravku. Funkčnosť návrhov bola overená v simulačnom programe LTspice a SNAP3v2. V reálnom zapojení aktívnych fázovacích filtrov sú pre zapojenia s CCII+, OTA a operačným zosilňovačom použité integrované obvody ako TL071, AD844 a LT1228. Bakalárska práca taktiež navrhuje koncepciu laboratórneho prípravku, kde bude možné porovnať funkčnosť fázovacích filtrov so simulovanými výsledkami.
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Phase shifted harmonic oscillators for practical education
Hudec, Marek ; Petržela, Jiří (oponent) ; Šotner, Roman (vedoucí práce)
This thesis focuses on designing a laboratory preparation for the study of phase-shift oscillators. The first part of the thesis comprises a theoretical discussion regarding the given problem. The laboratory preparation will include two types of oscillator circuits. An operational amplifier will be used as the amplifying element together with an RC feedback loop in one type of circuit whilst the other type will consist of operational transconductance amplifier employed as inverting amplifiers and generating feedback. The second part of the thesis includes the actual design of the preparation. The design process covers construction stage of the preparation, calculation of the component parameters necessary for oscillation to occur, simulations of the individual circuits along with THD analysis as well as with analysis of manufacturing variances. The second part of the thesis also contains the design of a separate block of all-pass filter. The simulation results will be verified experimentally, on a printed circuit board. In the last part of the thesis, I will evaluate and intercompare the theoretical, simulation and practical results.
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Phase shifted harmonic oscillators for practical education
Hudec, Marek ; Petržela, Jiří (oponent) ; Šotner, Roman (vedoucí práce)
This thesis focuses on designing a laboratory preparation for the study of phase-shift oscillators. The first part of the thesis comprises a theoretical discussion regarding the given problem. The laboratory preparation will include two types of oscillator circuits. An operational amplifier will be used as the amplifying element together with an RC feedback loop in one type of circuit whilst the other type will consist of operational transconductance amplifier employed as inverting amplifiers and generating feedback. The second part of the thesis includes the actual design of the preparation. The design process covers construction stage of the preparation, calculation of the component parameters necessary for oscillation to occur, simulations of the individual circuits along with THD analysis as well as with analysis of manufacturing variances. The second part of the thesis also contains the design of a separate block of all-pass filter. The simulation results will be verified experimentally, on a printed circuit board. In the last part of the thesis, I will evaluate and intercompare the theoretical, simulation and practical results.
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Phase shifted harmonic oscillators for practical education
Hudec, Marek ; Petržela, Jiří (oponent) ; Šotner, Roman (vedoucí práce)
This thesis focuses on designing a laboratory preparation for the study of phase-shift oscillators. The first part of the thesis comprises a theoretical discussion regarding the given problem. The laboratory preparation will include two types of oscillator circuits. An operational amplifier will be used as the amplifying element together with an RC feedback loop in one type of circuit whilst the other type will consist of operational transconductance amplifier employed as inverting amplifiers and generating feedback. The second part of the thesis includes the actual design of the preparation. The design process covers construction stage of the preparation, calculation of the component parameters necessary for oscillation to occur, simulations of the individual circuits along with THD analysis as well as with analysis of manufacturing variances. The second part of the thesis also contains the design of a separate block of all-pass filter. The simulation results will be verified experimentally, on a printed circuit board. In the last part of the thesis, I will evaluate and intercompare the theoretical, simulation and practical results.
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Laboratorní úloha zaměřená na všepropustné fázovací články
Lokaj, Jakub ; Šotner, Roman (oponent) ; Petržela, Jiří (vedoucí práce)
Táto bakalárska práca sa zaoberá teoretickým návrhom a realizáciou fázovacích filtrov. Jedná sa o využitie pasívnych a aktívnych prvkov vo fázovacích obvodoch a následnú aplikáciu v laboratórnom prípravku. Funkčnosť návrhov bola overená v simulačnom programe LTspice a SNAP3v2. V reálnom zapojení aktívnych fázovacích filtrov sú pre zapojenia s CCII+, OTA a operačným zosilňovačom použité integrované obvody ako TL071, AD844 a LT1228. Bakalárska práca taktiež navrhuje koncepciu laboratórneho prípravku, kde bude možné porovnať funkčnosť fázovacích filtrov so simulovanými výsledkami.
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Ultra Low Power Tunable Transconductor
Dabbous, Salma Bay Abo
This paper presents ultra-Low power (ultra-LP) Low voltage (LV) tunable transconductor (Gm) and its application to implement Gm-C filter. The CMOS structure of the Gm is performed using bulk-driven (BD) MOST technique, thus it can operate with extremely low voltage supply of ±0.3 V using 0.18 μm CMOS process. Moreover, it consumes ultra-LP about 4.9 μW. The simple topology, proper operating range, and tunability make this transconductor attractive. The transconductor and the Gm-C filter have been examined using simulation program Pspice.
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