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Fully-differential frequency filters with nontraditional active elements
Dvořák, Jan ; Koton, Jaroslav (referee) ; Jeřábek, Jan (advisor)
Bachelor's thesis deals with designs of fully-differential frequency filters which operate in current mode where it is possible to control their parameters by change the transconductance or the amplification. The first part divides and describes in general frequency filters. Furthermore, there are described active elements together with their simple simulation models. The second part describes the design of frequency filter by M-C signal-flow graph and methods of transforming final circuit to fully-differential structure. Next part presents several structures of the second-order filter with their simulations in non-differential and fully-differential forms. Last part presents designs of boards of printed circuits and measurement results of two chosen circuits.
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Design of communication network infrastructure for office building with open-spaces
Dvorštiak, Dávid ; Ondrák, Viktor (referee) ; Novotný, Vít (advisor)
The bachelor's thesis deals with the elaboration of a comprehensive design of the communication network infrastructure for office building with open-spaces. The work begins with theoretical background, which clarifies the issue of communication network infrastructure and are also fundamental for its proper development. Subsequently, the work analyses the current state of the premises, including the requirements from the investor and the floor plan provided. The final part of the work is devoted to a comprehensive design for the construction of communication network infrastructure in the premises.
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Fully-differential frequency filter designing with current active elements using signal-flow graphs method
Štork, Petr ; Jeřábek, Jan (referee) ; Langhammer, Lukáš (advisor)
This master’s thesis deals with designing of fully-differential current-mode frequency filters using signal-flow graphs method. The first part is focused on a general description of frequency filters, its function and division. Active elements that create these frequency filters, such as multi-output current follower (MO-CF), balanced or multi-output transconductance amplifier (BOTA, MOTA) and digitally adjustace current amplifier (DACA) are described in the following part. Next, problems and various techniques of designing such filters are discussed on a theoretic basis. In the remaining part of the thesis there are six circuits of frequency filters described in detail; these connections are then transferred of passive elements to a proposed connections, with the assistance of a so-called reflection. Calculations of passive form are stated, as well as results of simulations, where nondifferential and differential variations of these designed frequency filters are compared. Finaly, it has been selected some variants of designs, which has been manufactured, then measured out and resulet has been compare between each other.
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Company Communication Infrastructure Design
Václavík, Marek ; Jordán, Vilém (referee) ; Ondrák, Viktor (advisor)
This bachelor's thesis assesses the current state of the communication infrastructure in the company. Based on this assessment, a new communication infrastructure is designed. The new design includes the required elements of the communication infrastructure and their assignment into individual sections of the information and communication systems.
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Circuits for Analog Signal Processing Employing Unconventional Active Elements
Khatib, Nabhan ; Brzobohatý, Jaromír (referee) ; Zaplatílek,, Karel (referee) ; Biolek, Dalibor (advisor)
Disertační práce se zabývá zaváděním nových struktur moderních aktivních prvků pracujících v napěťovém, proudovém a smíšeném režimu. Funkčnost a chování těchto prvků byly ověřeny prostřednictvím SPICE simulací. V této práci je zahrnuta řada simulací, které dokazují přesnost a dobré vlastnosti těchto prvků, přičemž velký důraz byl kladen na to, aby tyto prvky byly schopny pracovat při nízkém napájecím napětí, jelikož poptávka po přenosných elektronických zařízeních a implantabilních zdravotnických přístrojích stále roste. Tyto přístroje jsou napájeny bateriemi a k tomu, aby byla prodloužena jejich životnost, trend navrhování analogových obvodů směřuje k stále většímu snižování spotřeby a napájecího napětí. Hlavním přínosem této práce je návrh nových CMOS struktur: CCII (Current Conveyor Second Generation) na základě BD (Bulk Driven), FG (Floating Gate) a QFG (Quasi Floating Gate); DVCC (Differential Voltage Current Conveyor) na základě FG, transkonduktor na základě nové techniky BD_QFG (Bulk Driven_Quasi Floating Gate), CCCDBA (Current Controlled Current Differencing Buffered Amplifier) na základě GD (Gate Driven), VDBA (Voltage Differencing Buffered Amplifier) na základě GD a DBeTA (Differential_Input Buffered and External Transconductance Amplifier) na základě BD. Dále je uvedeno několik zajímavých aplikací užívajících výše jmenované prvky. Získané výsledky simulací odpovídají teoretickým předpokladům.
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Extension and renovation of communication network in the area of high school
Valný, Jakub ; Sedlák, Petr (referee) ; Novotný, Vít (advisor)
The bachelor's thesis deals with a proposal for the expansion and modernization of a computer network in the high school building. The analytical part of the work describes the current state of the computer network, the building itself and the requirements of the investor. The theoretical part of the thesis describes the information needed to develop the design itself. The design section describes my own project elaboration. The last part of this work is the economic evaluation of the proposal.
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Haptic feedback device design for aircraft control
Dubnický, Lukáš ; Jebáček, Ivo (referee) ; Zikmund, Pavel (advisor)
This master thesis is focused on design of control stick grip and rudder pedals extension. These components are equipped with active elements, which provide pilot with haptic feedback. The purpose of the introduced design is to allow prototype to be built into the aeroplane so that the proposed concept of haptic feedback can be tested onboard. It shall verify used technical solutions as well to allow for their application on following development stages that aim at certification of the proposed haptic feedback system to be used in general aviation aeroplanes. The designed components are the successors of prototypes used for experiments carried on flight simulator. The design process follows the requirements of legislation and outcomes of the previous experiments. This thesis follows the design process from setting of the design requirements to mechanical test of 3D printed prototypes.
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Desing of New Network Infrastructure for Youth Home
Pexa, Marek ; Jordán, Vilém (referee) ; Ondrák, Viktor (advisor)
This bachelor thesis is focused on design network infrastrcture and telecommunication outlets in the fourth floor for needs of Domov mládeže. This work is based on analasys which was accomplished from requirements of the investor. This bachelor thesis contains teoretical resources which help better understand the issues of this topic. The aim of this bachelor thesis is to design active and pasive elements of network and economical assesment.
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Design of communication network infrastructure in health care building
Raida, Filip ; Sedlák, Petr (referee) ; Novotný, Vít (advisor)
The bachelor's thesis deals with the design of a communication network infrastructure in the new, multi-floor wing of the hospital. The main resources for the work are the floor plans and the requirements of the investor. The thesis describes the basic issues of networks and specifies all elements of communication systems. Result of the thesis is the selection of individual components, project documentation and financial evaluation.
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Design of a Computer Network for Storage Facilities
Jaroš, Petr ; Sedlák, Petr (referee) ; Ondrák, Viktor (advisor)
The bachelor's thesis deals with a complex design of a new computer network for a building in reconstruction. The building will serve as a background for the client's trade activities. The network design is based on an analysis of the current state, client requirements and theoretical background in the field of computer networks. The resulting design meets the client's requirements and should be used as a basis for the implementation of network hardware.
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