|
|
All-pass filters with various active devices
Novotný, Jakub ; Šotner, Roman (referee) ; Petržela, Jiří (advisor)
The theme of the semester project is to provide an overview of the function and use of analogue all-pass filters. It deals with their specific implementation using active functional blocks, i. e. using LT1228 transconductance amplifier manufactured by Linear Technology, using transimpedance amplifier AD844 manufactured by Analog Devices and using negative three port second generation current conveyor EL2082 manufactured by Intersil (formerly Elantec). Further outlines the concept of laboratory exercises on all-pass filters with the aforementioned integrated circuits. The exercise will consist of three separate units.
|
|
|
Electronically controllable frequency filters with current active elements
Suchánek, Tomáš ; Lattenberg, Ivo (referee) ; Kubánek, David (advisor)
The aim of the thesis is to study the possibilities of the electronic frequency ?lter com- posed of active elements operating in current mode. The main opportunities lie in the change control parameters, most are marginal or quality factor frequency. As the active elements are considered especially CC (Current Convejor), controllable current ampli?er DACA (Digitally Adjustable Current Ampli?er) or combination with the current tracker MO-CF (Multiple Output Current Follower). Another part will focus on the management of the above parameters using digital potentiometers and choosing the appropriate ?lter structure. The ?nal task was to digital control parameters using a PC and measuring its properties.
|
|
|
Fully-differential fractional frequency filters
Zapletal, Miroslav ; Dvořák, Jan (referee) ; Langhammer, Lukáš (advisor)
This diploma thesis is concentrated to fully differential and non-differential fractional-order filters with active elements. It describes how we can obtain fractional-order fully-differential filters design from non-differential design, thesis describes realization in OrCad program and simulation of this project. The first part of the thesis concerns theoretical analysis of frequency filters, active elements and fractional-order filters. The second part of the thesis includes designs of filters and simulations of differential structures and rest of non-differential structures simulation. The following part of the thesis concerns practical realization and experimental measurment of differential fractional-order filter. In the last part of this project, thesis evaluates all results which were revealed in our simulations and experimental measurment.
|
|
|
Design and implementation of behavioral block models of active elements
Lipčej, Martin ; Koton, Jaroslav (referee) ; Jeřábek, Jan (advisor)
Bachelor thesis is focused on electronically controlled modern active elements, their typical behavior and particularly on design of composite function blocks. General study of analog signal processing using active elements in current, or mixed mode is presented, including their ideal behavior. For selected basic active elements, in particular Operati- onal Transconductance Amplifier and Second-Generation Current Conveyor, were found suitable simulation models of commercially produced active elements with the aim of designing composite function blocks CCTA, VDTA and VDCC. The potential possibility of independent control of their parameters is also considered. The simulated circuits using behavioral models of real components are presented in the following chapters, including their manufacturer indicated properties and examples of parameter control. The thesis then presents the simulation results of all possible circuit variants of the three active function blocks. The main benefit of this project is the ge- neral introduction to current mode active elements, design of unconventional functional blocks using real components and the final evaluation of presented simulations, including comprarison with their theoretical behavior. The conclusion aims to summarize the most appropriate combination of components, including manufacturing of VDTA and VDCC.
|
|
|
Fully-differential fractional frequency filters
Zapletal, Miroslav ; Dvořák, Jan (referee) ; Langhammer, Lukáš (advisor)
This diploma thesis is concentrated to fully differential and non-differential fractional-order filters with active elements. It describes how we can obtain fractional-order fully-differential filters design from non-differential design, thesis describes realization in OrCad program and simulation of this project. The first part of the thesis concerns theoretical analysis of frequency filters, active elements and fractional-order filters. The second part of the thesis includes designs of filters and simulations of differential structures and rest of non-differential structures simulation. The following part of the thesis concerns practical realization and experimental measurment of differential fractional-order filter. In the last part of this project, thesis evaluates all results which were revealed in our simulations and experimental measurment.
|
|
|
Design and implementation of behavioral block models of active elements
Lipčej, Martin ; Koton, Jaroslav (referee) ; Jeřábek, Jan (advisor)
Bachelor thesis is focused on electronically controlled modern active elements, their typical behavior and particularly on design of composite function blocks. General study of analog signal processing using active elements in current, or mixed mode is presented, including their ideal behavior. For selected basic active elements, in particular Operati- onal Transconductance Amplifier and Second-Generation Current Conveyor, were found suitable simulation models of commercially produced active elements with the aim of designing composite function blocks CCTA, VDTA and VDCC. The potential possibility of independent control of their parameters is also considered. The simulated circuits using behavioral models of real components are presented in the following chapters, including their manufacturer indicated properties and examples of parameter control. The thesis then presents the simulation results of all possible circuit variants of the three active function blocks. The main benefit of this project is the ge- neral introduction to current mode active elements, design of unconventional functional blocks using real components and the final evaluation of presented simulations, including comprarison with their theoretical behavior. The conclusion aims to summarize the most appropriate combination of components, including manufacturing of VDTA and VDCC.
|
|
|
All-pass filters with various active devices
Novotný, Jakub ; Šotner, Roman (referee) ; Petržela, Jiří (advisor)
The theme of the semester project is to provide an overview of the function and use of analogue all-pass filters. It deals with their specific implementation using active functional blocks, i. e. using LT1228 transconductance amplifier manufactured by Linear Technology, using transimpedance amplifier AD844 manufactured by Analog Devices and using negative three port second generation current conveyor EL2082 manufactured by Intersil (formerly Elantec). Further outlines the concept of laboratory exercises on all-pass filters with the aforementioned integrated circuits. The exercise will consist of three separate units.
|
|
|
All-pass filters with various active devices
Novotný, Jakub ; Šotner, Roman (referee) ; Petržela, Jiří (advisor)
The theme of the semester project is to provide an overview of the function and use of analogue all-pass filters. It deals with their specific implementation using active functional blocks, i. e. using LT1228 transconductance amplifier manufactured by Linear Technology, using transimpedance amplifier AD844 manufactured by Analog Devices and using negative three port second generation current conveyor EL2082 manufactured by Intersil (formerly Elantec). Further outlines the concept of laboratory exercises on all-pass filters with the aforementioned integrated circuits. The exercise will consist of three separate units.
|
|
|
Electronically controllable frequency filters with current active elements
Suchánek, Tomáš ; Lattenberg, Ivo (referee) ; Kubánek, David (advisor)
The aim of the thesis is to study the possibilities of the electronic frequency ?lter com- posed of active elements operating in current mode. The main opportunities lie in the change control parameters, most are marginal or quality factor frequency. As the active elements are considered especially CC (Current Convejor), controllable current ampli?er DACA (Digitally Adjustable Current Ampli?er) or combination with the current tracker MO-CF (Multiple Output Current Follower). Another part will focus on the management of the above parameters using digital potentiometers and choosing the appropriate ?lter structure. The ?nal task was to digital control parameters using a PC and measuring its properties.
|
guest ::
