<p>Telia Telesvar is an automatic anwering machine that is provided in your stationary telephone at home. The drawback of this is that you cannot see if anyone has called you. </p><p>This report describes how a terminal for Telias Telesvar could be designed. Telesvar terminal will show in a display if anyone called you and show the incoming number. It will also play the spoken message in a built in speaker. </p><p>The design is based on some key components, LCD (Liquid Crystal Display) and DTMF (Dual Tone Multiple Frequency) and PIC16F877 microcontroller. These components are also described in the report.</p>

<p>The purpose of this thesis was to implement a serial communication port model for a digital signal processor. It is a behavioral model, developed using VHDL, that is instruction comparisable to the Motorola digital signal processor DSP 56002. It supports five different data transfer modes and provides a programmable baud rate generator. </p><p>This report starts out by giving a description of the external port, port C, the pin control logic and general purpose functionality. Then a more detailed description of the three pin dedicated serial communication interface is presented, the different operating modes and the baud rate generator are described.</p>

<p>The goal of this work is to summarize the calculations for scaling and noise of twoportadaptor. Two different methods has been described and used for the final results.</p>

<p>The purpose with this examination is to build a measureequipment to AerotechTelub AB (AT), who will registrate fault in SRAM-memory in contact with cosmic radiation. The equipment will be created around developcard from Memec Design with FPGA from Xilinx. The logic in the FPGA will be implemented with the hardwaredescribed language VHDL. The SRAM-memory that will be tested is build in CMOS-teknologi. The memorycells will be loaded with a predecided bitpattern. Changes in the memorycells will be registrated together with the adress where the fault came up. </p><p>The equipment will be used of AT at the measuring they use to do in special laboratories that can give cosmic radiation.</p>

<p>The last few decades the development in the field of electronics has been huge. The components performance gets better at the same time as the manufacturing cost decreases. Many of the design moments that have to be done, are done automatically today, but it can get better. Especially for analog circuit design.</p><p>At Electronic System in Linköpings universitet, research is in progress to develop a tool that can design analog circuits in reasonable time. It means that it has to size the components (transistors, resistances, capacitances etc), so that the circuit can fulfill the performance requirements. An optimization method in conjunction with derived equations for the circuit performance is used to solve this task. The tool is created to design e.g. analog amplifiers. The goal is to decrease the design time and at the same time achieve better circuit performance.</p><p>This tool has been tested on three different circuits, a power-amplifier, a Nested Miller Compensated amplifier with an active feedback (Active Nested Miller Compensation) and a Nested Miller Compensated amplifier without an active feedback (Nested Miller Compensation). In this report the results from the designing tests are presented.</p>

<p>An important part in the design of analog integrated circuits is to create reference voltages and currents with well defined values. To accomplish this on-chip, so called bandgap reference circuits are commonly used. A typical application for reference voltages is in analog-to-digital conversion, where the input voltage is compared to several reference levels in order to determine the corresponding digital value. The emphasis in this thesis work lies on theoretical understanding of the performance limitations as well as the design of a bandgap reference circuit, BGR.</p><p>In this project, a comprehensive study of bandgap circuits is done in the first stage. Then investigations on parameter variations like Vdd, number of bipolars, W/L of PMOS, DC gain of Opamp, RL and CL are done for a PTAT current generator circuit. This PTAT current generator circuit is a part of the implemented BGR circuit based on [10], which is capable of producing an output reference voltage of 0.75 V when the supply voltage is 1 V. All of these circuits are implemented in a 0.35u CMOS technology.</p>

Estimating the carrier frequency from a modulated waveform is one of the most important functions of a coherent signal receiver. Good performance and low bit error rates are obtained by coherent demodulation. Therefore, exact knowledge of the received signal carrier frequency is critical for communication systems. Also due to the spectral crowding, a high probability of channel interference can be observed. Under moderate carrier frequency offsets, data-aided estimators have been developed which have a high accuracy of estimation. However, for high frequency offsets the frequency estimator does not have the information of data or timing. In this thesis we propose a parametric based carrier frequency estimation of GMSK, which has improved performance over ad-hoc methods (delay and multiply) and has high resolution capability. In this thesis three methods are implemented over GMSK data to improve the performance and their results compared with the standard delay and multiply method. Two of these methods are parametric based estimators and one is a fast frequency estimator. Parametric based estimators were chosen partly due to their high resolution capabilities and mainly for their proven performance. Parametric based estimators were seen to have high computational load, and hence an alternate fast frequency estimator was implemented. The tradeoffs involved with respect to computational load and performance were shown. The contributions of this thesis include the verification of the validity of applying a parametric based approach on GMSK data, and compare the performances of parametric methods and fast frequency estimator. It is showii that such an approach has a better performance compared to non-data aided ad-hoc delay. and multiply methods. A closed loop configuration of the open loop parametric methods is suggested in the end. / Graduation date: 2004 / Best scan available. Figures are light on the original.

This report deals with the design of a controller for SmartMedia™ flash memory cards, based on a hardware description found in the SmartMedia™ Interface Library - SMIL. The design was made on logic gate level, using standard cells in OrCAD Capture. After simulation of the design in PSpice A/D, it was exported as an EDIF netlist, which was used to make a chip layout in L-Edit, a layout tool for making integrated circuits. The layout was made using a method called Standard Place and Route - SPR, where the layout tool places standard cells from a library and connects them according to the EDIF netlist. A netlist which could be simulated in PSpice was extracted from the finished chip layout to verify that the function of the design was the same as before the transition from schematic to layout. The standard cells in the library used to make the chip layout have to meet certain criteria in order for both SPR and extraction to work and this is also discussed.

This dissertation examines the repertoire for solo trumpet and electronics through a study of the genre as a whole and discussions of four compositions that represent its main stylistic approaches. An obscure but fascinating genre, current research in this area is limited to discussions of a few of its compositions in other dissertations and lecture recitals. By investigating this music, this dissertation will contribute to an area that has so far seen little research while promoting new repertoire that greatly expands the musical possibilities of solo trumpet performance. Based on the List of Compositions for Solo Trumpet and Electronics compiled by the author, several aspects of this repertoire are described in Chapter Two, including its development from 1965 to 2009 and the relative popularity of its different compositional approaches. The primarily academic background of this repertoire’s composers is discussed as well as the diverse nationalities they represent. The relative obscurity of this repertoire is suggested by the number of compositions for solo trumpet and electronics that have been published and recorded. A discussion of the aesthetic, qualitative and practical aspects of the repertoire is presented in Chapter Three. Based on interviews with leading performers of this repertoire and the composers of the pieces examined in this dissertation, this music is discussed from the perspective of musicians who have significant experience in this field. Their interviews illuminate several important issues that may not be apparent to musicians who are unfamiliar with this repertoire. Chapters Four through Seven discuss four representative compositions from the List. An overview of each piece is given, along with biographical information about its composer, a description of its electronic components, discussion of relevant performance techniques, and formal analysis of the composition. Conclusions based on this investigation and suggestions for future research are suggested in Chapter Eight.

This dissertation examines the repertoire for solo trumpet and electronics through a study of the genre as a whole and discussions of four compositions that represent its main stylistic approaches. An obscure but fascinating genre, current research in this area is limited to discussions of a few of its compositions in other dissertations and lecture recitals. By investigating this music, this dissertation will contribute to an area that has so far seen little research while promoting new repertoire that greatly expands the musical possibilities of solo trumpet performance. Based on the List of Compositions for Solo Trumpet and Electronics compiled by the author, several aspects of this repertoire are described in Chapter Two, including its development from 1965 to 2009 and the relative popularity of its different compositional approaches. The primarily academic background of this repertoire’s composers is discussed as well as the diverse nationalities they represent. The relative obscurity of this repertoire is suggested by the number of compositions for solo trumpet and electronics that have been published and recorded. A discussion of the aesthetic, qualitative and practical aspects of the repertoire is presented in Chapter Three. Based on interviews with leading performers of this repertoire and the composers of the pieces examined in this dissertation, this music is discussed from the perspective of musicians who have significant experience in this field. Their interviews illuminate several important issues that may not be apparent to musicians who are unfamiliar with this repertoire. Chapters Four through Seven discuss four representative compositions from the List. An overview of each piece is given, along with biographical information about its composer, a description of its electronic components, discussion of relevant performance techniques, and formal analysis of the composition. Conclusions based on this investigation and suggestions for future research are suggested in Chapter Eight.