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Active noise radiometry and its applications
Hudec, Marek ; Motúz, Rastislav (oponent) ; Drexler, Petr (vedoucí práce)
The aim of this work is to analyze the application of microwave noise field in active radiometry. The first part of the thesis is focused on the theoretical description of physical processes that result in different types of noise signal. Furthermore, the properties of noise and noise field for which noise could have potential applications in radiometry are described. The principles of radiometry itself are then described, in which the mechanisms of electromagnetic wave propagation in material environments are explained, as well as the concept of the radiometer as a tool for measuring radiation of material objects. The first part of the work is concluded with the use of active radiometry in combination with a noise field. The second part of the thesis is focused on the design of a noise radiometry measurement system, in which the theoretical knowledge from the first part is applied. The design deals with the overall concept of the measurement system, the different configurations for measuring material properties, the design of the noise radiometer and the noise radiator. The possibilities of increasing the noise performance of the radiator are also discussed. The last section of the work is devoted to microwave noise tomography, its comparison with optical coherence tomography, and the Fabry-Perot interferometer as a tool for examining the profile of material structures using a noise field.
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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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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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