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Circuits for Analog Signal Processing Employing Unconventional Active Elements
Khatib, Nabhan ; Brzobohatý, Jaromír (oponent) ; Zaplatílek,, Karel (oponent) ; Biolek, Dalibor (vedoucí práce)
The dissertation thesis deals with implementing new structures of modern active elements working in voltage_, current_, and mixed mode. The functionality and behavior of these elements have been verified by SPICE simulation. Sufficient numbers of simulated plots are included in this thesis to illustrate the precise and strong behavior of those elements. However, a big attention to implement active elements by utilizing LV LP (Low Voltage Low Power) techniques is given in this thesis. This attention came from the fact that growing demand of portable electronic equipments and implantable medical devices are pushing the development towards LV LP integrated circuits because of their influence on batteries lifetime. More specifically, the main contribution of this thesis is to implement new CMOS structures of: CCII (Current Conveyor Second Generation) based on BD (Bulk Driven), FG (Floating Gate) and QFG (Quasi Floating Gate); DVCC (Differential Voltage Current Conveyor) based on FG; Transconductor based on new technique of BD_QFG (Bulk Driven_Quasi Floating Gate); CCCDBA (Current Controlled Current Differencing Buffered Amplifier) based on conventional GD (Gate Driven); VDBA (Voltage Differencing Buffered Amplifier) based on GD. Moreover, defining new active element i.e. DBeTA (Differential_Input Buffered and External Transconductance Amplifier) based on BD is also one of the main contributions of this thesis. To confirm the workability and attractive properties of the proposed circuits many applications were exhibited. The given results agree well with the theoretical anticipation.
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Návrh vysokofrekvenčních přeladitelných oscilátorů
Malec, Tomáš ; Vochyán, Josef (oponent) ; Petržela, Jiří (vedoucí práce)
Tento dokument pojednává o nejjednodušších strukturách schopných generovat harmonický signál o vysoké frekvenci a stabilní amplitudě. Jako základní prvky těchto oscilátorů byly použity aktivní bloky známé jako diamantové tranzistory. Při návrhu byl kladen důraz na co nejmenší počet použitých součástek a plynulé elektronické přeladění. Tyto navržené obvody byly teoreticky analyzovány programem PSpice a prakticky ověřeny. Dokument obsahuje výsledky těchto analýz a naměřené hodnoty se zaměřením na harmonické zkreslení, rozsah přeladitelnosti a fázový šum.
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Circuits for Analog Signal Processing Employing Unconventional Active Elements
Khatib, Nabhan ; Brzobohatý, Jaromír (oponent) ; Zaplatílek,, Karel (oponent) ; Biolek, Dalibor (vedoucí práce)
The dissertation thesis deals with implementing new structures of modern active elements working in voltage_, current_, and mixed mode. The functionality and behavior of these elements have been verified by SPICE simulation. Sufficient numbers of simulated plots are included in this thesis to illustrate the precise and strong behavior of those elements. However, a big attention to implement active elements by utilizing LV LP (Low Voltage Low Power) techniques is given in this thesis. This attention came from the fact that growing demand of portable electronic equipments and implantable medical devices are pushing the development towards LV LP integrated circuits because of their influence on batteries lifetime. More specifically, the main contribution of this thesis is to implement new CMOS structures of: CCII (Current Conveyor Second Generation) based on BD (Bulk Driven), FG (Floating Gate) and QFG (Quasi Floating Gate); DVCC (Differential Voltage Current Conveyor) based on FG; Transconductor based on new technique of BD_QFG (Bulk Driven_Quasi Floating Gate); CCCDBA (Current Controlled Current Differencing Buffered Amplifier) based on conventional GD (Gate Driven); VDBA (Voltage Differencing Buffered Amplifier) based on GD. Moreover, defining new active element i.e. DBeTA (Differential_Input Buffered and External Transconductance Amplifier) based on BD is also one of the main contributions of this thesis. To confirm the workability and attractive properties of the proposed circuits many applications were exhibited. The given results agree well with the theoretical anticipation.
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Návrh vysokofrekvenčních přeladitelných oscilátorů
Malec, Tomáš ; Vochyán, Josef (oponent) ; Petržela, Jiří (vedoucí práce)
Tento dokument pojednává o nejjednodušších strukturách schopných generovat harmonický signál o vysoké frekvenci a stabilní amplitudě. Jako základní prvky těchto oscilátorů byly použity aktivní bloky známé jako diamantové tranzistory. Při návrhu byl kladen důraz na co nejmenší počet použitých součástek a plynulé elektronické přeladění. Tyto navržené obvody byly teoreticky analyzovány programem PSpice a prakticky ověřeny. Dokument obsahuje výsledky těchto analýz a naměřené hodnoty se zaměřením na harmonické zkreslení, rozsah přeladitelnosti a fázový šum.
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