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Pseudo-differential frequency filters operating in current mode
Velič, Ladislav ; Bečková, Zuzana (referee) ; Sládok, Ondřej (advisor)
This bachelor thesis deals with pseudo-differential frequency filters working in current mode. This thesis further describes different types of frequency filters and their characteristics. In the thesis there are described differencies between differential, non-differential and pseudo-differential filters and their schemes. The thesis then shows schemes of pseudo-differential filters working in current mode. Pseudo-differential band-pass filter is in practical part of the thesis constructed and its practical features are compared to the theoretical.
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Systematic design of pseudo-differential frequency filters
Milota, Martin ; Langhammer, Lukáš (referee) ; Sládok, Ondřej (advisor)
This bachelor thesis deals with the design and analysis of a pseudo-differential filters of higher order. This designed filters work in voltage mode and it is a second-order low-pass filter and a second-order band-stop filter. The filters use three current conveyors and four passive elements. The two lower-pass filters are cascaded together in different ways to form a fourth-order low-pass filter. The functionality of all filters is verified by simulations and low-pass filter as well as experimental measurements. Filter analysis examines the module, phase, common-mode rejection ratio, and behavior of filters while reducing optimal voltage. The results of simulations and experimental measurements are presented using the plots. The conclusion of the thesis is a successful verification functionality of the designed structure and comparison of different ways of connecting the filters to the cascade.
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Pseudo-differential higher-order frequency filters
Jeleček, Jiří ; Dvořák, Jan (referee) ; Sládok, Ondřej (advisor)
This Master's thesis deals with pseudo-differential frequency higher order filters working in voltage mode. The thesis deals with the description of frequency filters, their types and applications. Follows an analysis of differential and pseudo-differential transmissions. Next part contains a description of used active elements (conveyors) at thesis (CCII, DVCC, DDCC, UCC). In the last part the thesis is devoted to the own design of the pseudo-differential filter. Design functionality is verified by experimental simulation.
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Differential and pseudo-differential frequency filters
Sládok, Ondřej ; Herencsár, Norbert (referee) ; Koton, Jaroslav (advisor)
This thesis deals with fully differential and pseudo-differential frequency filters. Significant emphasis is placed on the characteristics of common-mode signal. Further, the text deals with the design issue of fully-differential structure and transformation of non-differential to pseudo-differential structures. In the thesis one non-differential structure, one fully-differential and three pseudo-differential structures are proposed, one of them working in current mode. The thesis also describes the analysis from the perspective of non-ideal properties of the active element of two circuit solutions, which is trying to find the optimal solution. In each case, functionality of new solutions is verified by simulations and in several cases also by experimental measurement.
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Pseudo-differential frequency filters
Dubina, Jan ; Herencsár, Norbert (referee) ; Sládok, Ondřej (advisor)
The bachelor thesis deals with the theory of frequency filters with a closer focus on the pseudo-difference structure, design and simulation of the pseudo-difference filter. The content of the work is a comparison of different properties between different types of structures and their involvement. One pseudo-differential structure is proposed in this work, which uses two types of conveyors and creates all types of selective filters, their transfer function and simulation of their modular and phase characteristics. The work also includes product fabrication, experimental measurements and comparison of results with theory and simulation.
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Differential and pseudo-differential filtering circuits
Hrbek, Tomáš ; Bečková, Zuzana (referee) ; Jeřábek, Jan (advisor)
This bachelor thesis deals with analog frequency filters operating in differential and pseudodifferential mode. It is focused on active filters second order that use modern active elements. For specific solution is analyzed the ability to control filter parameters. It also deals with the design of fully differential filters and transformations from non-differential filters. The thesis analyzes three specific filtering solutions with which ideal simulations and simulations using third order models are performed. A printed circuit is constructed for one filter solution, its parameters are measured and compared with simulations.
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Pseudo-Differential Fractional-Order Frequency Filter
Sladok, Ondrej ; Mohamad, Alkanan
This paper describes a pseudo-differential fractional (1+α)-order frequency filter. Thestructure operating in voltage-mode and and works as a low-pass filter. The proposed structure ischaracterized by high input impedance, high output impedance and the minimum number of passiveelements when all are grounded. The properties and functionality of the (1+α)-filter are verifiedby simulations.
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Pseudo-differential frequency filters
Dubina, Jan ; Herencsár, Norbert (referee) ; Sládok, Ondřej (advisor)
The bachelor thesis deals with the theory of frequency filters with a closer focus on the pseudo-difference structure, design and simulation of the pseudo-difference filter. The content of the work is a comparison of different properties between different types of structures and their involvement. One pseudo-differential structure is proposed in this work, which uses two types of conveyors and creates all types of selective filters, their transfer function and simulation of their modular and phase characteristics. The work also includes product fabrication, experimental measurements and comparison of results with theory and simulation.
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Pseudo-Differential High-Order Frequency Filter
Sládok, Ondřej
This article describes a pseudo-differential third-order frequency filter operating in voltage mode, using four differential difference current conveyors (DDCCs), and six passive elements. The circuit has a high input impedance, low active and passive sensitivity and high common-mode rejection ratio (CMRR). The proposed structure is able to realize one type of frequency responses low pass. Non-ideal analysis has been performed by considering the real parasitic parameters of the active elements. Optimization was made with a view to greatly influence low pass filter attenuation.
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Pseudo-Differential Frequency Filter Using Conveyors
Milota, Martin
The author of this article deals with the design and analysis of a pseudo-differential filter. This designed filter works in voltage mode and is a second-order low pass filter. The filter uses three current conveyors and four passive elements. The proposed circuit reaches the theoretical values in simulations. The simulation results are displayed by modular and phase characteristics.
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