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Development of an algorithm for optimizing clock balanced cells in a digital standard cell library
Kříž, Lukáš ; Frýza, Tomáš (referee) ; Král, Vojtěch (advisor)
The bachelor thesis focuses on the analysis and optimization of clock-balanced cells in a digital standard library. The bachelor thesis was to explore the impact of cells in CMOS technology and assess their influence on the stability of the clock signal. Emphasis was placed on the effects of unbalanced clock cells in the path of the clock signal path, and the consequences that may arise if these cells are used. As part of the bachelor thesis, cells of logical operators such as buffer, inverter, AND, and OR were simulated. It is demonstrated how these cells are implemented in CMOS technology using PMOS and NMOS transistors, and the process of cell balancing is described. All simulations were conducted in the ngspice environment. Subsequently, the whole process was automated by developing an algorithm in Python.
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Modeling of the unconventional functional blocks in Pspice
Zetík, Rostislav ; Brančík, Lubomír (referee) ; Petržela, Jiří (advisor)
This master´s thesis on theme Modeling of the unconventional functional blocks in Pspice deals with the design procedures of electronic elements models and should to help with their create. At the beginning the thesis theoretically describes how the models are created and what possibilities for modeling the program Pspice offers. There are drawn near the individual levels of model and their properties. The second main part of thesis shows practically step by step the design procedures of models of the operational amplifier, current and voltage conveyors, OTA, CDTA, immittance inverter and converter and logarithmic amplifier. There are created the models up to 4.th level, the ideal, resistive, frequency dependent and nonlinear. The basic transmission properties, input and output impedance are modeled this way. The created models with sufficient accuracy correspond to the parameters of the commercial elements. This thesis such shows the possibilities of the program for finding of values for model components like stepping or Optimizer tool.
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Internet schematic editor
Popelka, Lukáš ; Biolek, Dalibor (referee) ; Kadlec, Jaroslav (advisor)
The diploma thesis deals with creating of electronic schematics in editor using web interface. The editor generates electrical circuit text file according to Spice netlist specification. The program has been created in Java and takes an advantage of object oriented programming language. The editor is a part of a web page and is executable as an applet. The diploma thesis describes a programming language selection, program layout and implementation. Thesis contains programming code examples, window illustration and component drawings. Depth-first search algorithm has been used for nodes number assignment. An OrCAD PSpice reference guide was used for netlist.
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Software tool for conversion circuit design from Spice netlist format to graphical format
Forman, Zdeněk ; Prokop, Roman (referee) ; Kadlec, Jaroslav (advisor)
User interface for conversion of circuit connection, which is registred in SPICE netlist format in appropriate graphic presentation, is very interesting. Not a lot of software packages focused on processing of electrotechnic schemes have this interesting option. Generating of graphic representation of netlist is based on analysis of text account of network and location of parts to drawing cloth. These parts are located on the basis of coveted loops of network. System for dislocation contains undefined parts for faster algorithm of dislocation. This kind of software can be used every time when is necessary to create some graphic representation of tested network.
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Frequency Domain Computer Analysis of Switched Circuits
Pech, Vladislav ; Novotný, Vít (referee) ; Biolek, Dalibor (advisor)
This project deals with the computer analysis of circuits with external switching. At the first of all there is a description of the creation of the entry of the program CIRNAM – description of the circuit, modified netlist. The work also discusses the theory used for solutions of analysed circuits. In the other part there is a description of the program CIRNAM in full details. In the next parts of this project there is the illustration of work in the program, which is shown on the examples with short discussion of output options – he rendering of the frequency characteristics in the program CIRNAM or the export of calculated data to MATLAB. There are also described the source code of CIRNAM for the initial orientation of the programmer, which would extend the possibilities of this program.
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Software tool for conversion circuit design from Spice netlist format to graphical format
Forman, Zdeněk ; Prokop, Roman (referee) ; Kadlec, Jaroslav (advisor)
User interface for conversion of circuit connection, which is registred in SPICE netlist format in appropriate graphic presentation, is very interesting. Not a lot of software packages focused on processing of electrotechnic schemes have this interesting option. Generating of graphic representation of netlist is based on analysis of text account of network and location of parts to drawing cloth. These parts are located on the basis of coveted loops of network. System for dislocation contains undefined parts for faster algorithm of dislocation. This kind of software can be used every time when is necessary to create some graphic representation of tested network.
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Frequency Domain Computer Analysis of Switched Circuits
Pech, Vladislav ; Novotný, Vít (referee) ; Biolek, Dalibor (advisor)
This project deals with the computer analysis of circuits with external switching. At the first of all there is a description of the creation of the entry of the program CIRNAM – description of the circuit, modified netlist. The work also discusses the theory used for solutions of analysed circuits. In the other part there is a description of the program CIRNAM in full details. In the next parts of this project there is the illustration of work in the program, which is shown on the examples with short discussion of output options – he rendering of the frequency characteristics in the program CIRNAM or the export of calculated data to MATLAB. There are also described the source code of CIRNAM for the initial orientation of the programmer, which would extend the possibilities of this program.
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Internet schematic editor
Popelka, Lukáš ; Biolek, Dalibor (referee) ; Kadlec, Jaroslav (advisor)
The diploma thesis deals with creating of electronic schematics in editor using web interface. The editor generates electrical circuit text file according to Spice netlist specification. The program has been created in Java and takes an advantage of object oriented programming language. The editor is a part of a web page and is executable as an applet. The diploma thesis describes a programming language selection, program layout and implementation. Thesis contains programming code examples, window illustration and component drawings. Depth-first search algorithm has been used for nodes number assignment. An OrCAD PSpice reference guide was used for netlist.
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Modeling of the unconventional functional blocks in Pspice
Zetík, Rostislav ; Brančík, Lubomír (referee) ; Petržela, Jiří (advisor)
This master´s thesis on theme Modeling of the unconventional functional blocks in Pspice deals with the design procedures of electronic elements models and should to help with their create. At the beginning the thesis theoretically describes how the models are created and what possibilities for modeling the program Pspice offers. There are drawn near the individual levels of model and their properties. The second main part of thesis shows practically step by step the design procedures of models of the operational amplifier, current and voltage conveyors, OTA, CDTA, immittance inverter and converter and logarithmic amplifier. There are created the models up to 4.th level, the ideal, resistive, frequency dependent and nonlinear. The basic transmission properties, input and output impedance are modeled this way. The created models with sufficient accuracy correspond to the parameters of the commercial elements. This thesis such shows the possibilities of the program for finding of values for model components like stepping or Optimizer tool.
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