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Experimental validation of the parasitic RC components extraction (PEX extraction) using ring oscillators
Buzek, Vít ; Král, Vojtěch (referee) ; Hejátková, Edita (advisor)
The main focus of this work is verification of extraction of parasitic RC components. The theoretical part is concerned with theoretical terms from the area of design of integrated circuits, ring oscillators, parasitic extraction and frequency counting are clarified. The practical section is dedicated to measuring at manufactured structures on a silicon wafer and simulation, which simulates the designed structures in Cadence Virtuoso. For the parasitic extraction to be verified, it is necessary to compare the measured and simulation frequencies, to find out the deviations and to point out configurations with limited accuracy. Section of the practical part is dedicated to statistical analysis and suggestion on improving the parasitic extraction.
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Automatic Antenna Tuner with Intelli-fit Algorithm
Frecer, Petr ; Povalač, Aleš (referee) ; Lukeš, Zbyněk (advisor)
The bachelor’s thesis deals with an antenna impedance matching, a design and a construction of an automatic antenna tuner. Basic physical equations are mentioned describing reflections on a feed line and the impedance matching. Various LC networks are discussed for their impedance-transforming possibility. One of the designs is chosen according to given requirements. A system is designed as fully-automated. All activities are managed by a microcontroller. Fast impedance matching is provided by an intelligent algorithm. A SWR-meter serves as a vital data source. The system is equipped with additional circuits that improve functionality (a frequency counter, an external memory). The system can be controlled remotely by a personal computer programme communicating via USB or RS-232.
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Automatic Antenna Tuner with Intelli-fit Algorithm
Frecer, Petr ; Povalač, Aleš (referee) ; Lukeš, Zbyněk (advisor)
The bachelor’s thesis deals with an antenna impedance matching, a design and a construction of an automatic antenna tuner. Basic physical equations are mentioned describing reflections on a feed line and the impedance matching. Various LC networks are discussed for their impedance-transforming possibility. One of the designs is chosen according to given requirements. A system is designed as fully-automated. All activities are managed by a microcontroller. Fast impedance matching is provided by an intelligent algorithm. A SWR-meter serves as a vital data source. The system is equipped with additional circuits that improve functionality (a frequency counter, an external memory). The system can be controlled remotely by a personal computer programme communicating via USB or RS-232.
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