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Multifunctional tuned active filter
Šotner, Roman ; Petržela, Jiří (referee) ; Dostál, Tomáš (advisor)
The diploma thesis deals about design of the ARC multifunctional filters using modern functional blocks. These active blocks are for example voltage feedback operational amplifiers (OAs), operational transconductance amplifiers (OTAs), current conveyors (CCIIs) or current mode analog multipliers, current feedback amplifiers (CFAs), integrated circuits with switched capacitors building blocks (SCs) and digital potentiometers. The filters are studied with ideal circuit models and models of third level (3) based on voltage controlled voltage sources, voltage controlled current sources etc. (analog behavioral modelling). The professional macromodels are used for example LT 1364 (Linear Technology), EL 2045 (Intersil), LT 1228 (Linear Technology), LM 13700 (National Semiconductor), EL 2082 (Intersil), AD 844 (Analog Devices) and others. The circuits of the designed filters are simulated in PSpice (OrCAD), parasite effects and effects of the real parts are studied. Tuning and electronic adjusting parameters these filters are discussed and controlled by simulation in PSpice. Properties some simulated circuits are compare with experimental results. In conclusion individual filters are discussed and compared their properties. The constructional details of the some filters are presented at the end of this work.
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Design, simulation and measurement of active filters with modern functional blocks
Melša, Vojtěch ; Petržela, Jiří (referee) ; Brančík, Lubomír (advisor)
This work concentrates on the possibilities of how to connect electric filters with functional blocks. Then we choose the best possible connections and their characteristics are simulated in the Pspice program. From the comparison of the results of simulation, possibilities of tuning, quantity of functions, complicacy of connections and mainly by commercially available integrated circuits is chosen the connection which is realized in a laboratory preparation form. Its measured characteristics are compared with results of simulation
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Design, simulation and measurement of active filters with modern functional blocks
Melša, Vojtěch ; Petržela, Jiří (referee) ; Brančík, Lubomír (advisor)
This work concentrates on the possibilities of how to connect electric filters with functional blocks. Then we choose the best possible connections and their characteristics are simulated in the Pspice program. From the comparison of the results of simulation, possibilities of tuning, quantity of functions, complicacy of connections and mainly by commercially available integrated circuits is chosen the connection which is realized in a laboratory preparation form. Its measured characteristics are compared with results of simulation
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Multifunctional tuned active filter
Šotner, Roman ; Petržela, Jiří (referee) ; Dostál, Tomáš (advisor)
The diploma thesis deals about design of the ARC multifunctional filters using modern functional blocks. These active blocks are for example voltage feedback operational amplifiers (OAs), operational transconductance amplifiers (OTAs), current conveyors (CCIIs) or current mode analog multipliers, current feedback amplifiers (CFAs), integrated circuits with switched capacitors building blocks (SCs) and digital potentiometers. The filters are studied with ideal circuit models and models of third level (3) based on voltage controlled voltage sources, voltage controlled current sources etc. (analog behavioral modelling). The professional macromodels are used for example LT 1364 (Linear Technology), EL 2045 (Intersil), LT 1228 (Linear Technology), LM 13700 (National Semiconductor), EL 2082 (Intersil), AD 844 (Analog Devices) and others. The circuits of the designed filters are simulated in PSpice (OrCAD), parasite effects and effects of the real parts are studied. Tuning and electronic adjusting parameters these filters are discussed and controlled by simulation in PSpice. Properties some simulated circuits are compare with experimental results. In conclusion individual filters are discussed and compared their properties. The constructional details of the some filters are presented at the end of this work.
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