Search for dissertations about: "negative feedback amplifier"

Showing result 1 - 5 of 8 swedish dissertations containing the words negative feedback amplifier.

2. 1. Systematic Design of Linear Feedback Amplifiers

   Author : Martin Lantz; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal processing; Volterra series; dynamic distortion; clipping; nonlinear distortion; systematic design; feedback amplifier; Signalbehandling;

   Abstract : This work adds a quantitative description of distortion to the structured design method of negative-feedback amplifiers. It constitutes a power-series representation of the feedback amplifier, which may include dynamic (memory) effects, where the design parameters appear explicitly. READ MORE

4. 2. High-Temperature Analog and Mixed-Signal Integrated Circuits in Bipolar Silicon Carbide Technology

   Author : Raheleh Hedayati; Carl-Mikael Zetterling; H. Alan Mantooth; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon carbide SiC ; bipolar junction transistor BJT ; high temperature; SiC integrated circuit; Spice Gummel-Poon SGP ; operational amplifier opamp ; negative feedback amplifier; bandgap reference; masterslave comparator; digital-to-analog converter DAC ; analog-to-digital converter ADC ; flash ADC; successive approximation register SAR ADC; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Silicon carbide (SiC) integrated circuits (ICs) can enable the emergence of robust and reliable systems, including data acquisition and on-site control for extreme environments with high temperature and high radiation such as deep earth drilling, space and aviation, electric and hybrid vehicles, and combustion engines. In particular, SiC ICs provide significant benefit by reducing power dissipation and leakage current at temperatures above 300 °C compared to the Si counterpart. READ MORE

5. 3. CALLUM Linear Transmitter - Architecture and Circuit Analysis

   Author : Roland Strandberg; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikationsteknik; Telecommunication engineering; loop time delay; modulation negative feedback; spectral emissions; baseband model; CALLUM; Linear transmitter architecture; power amplifier linearization;

   Abstract : This doctoral dissertation presents a study of linear radio transmitters based on the combined analog locked loop universal modulator (CALLUM) approach. Linear architectures such as CALLUM are very attractive for power-efficient operations, since they have no fundamental limitations prohibiting a 100% efficiency for all envelope levels, without sacrificing the potential of a linear transmission. READ MORE

6. 4. HARQ Systems: Resource Allocation, Feedback Error Protection, and Bits-to-Symbol Mappings

   Author : Chaitanya Tumula V. K.; Erik G. Larsson; Danyo Danev; Ana I. Pérez-Neira; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HARQ Systems; Resource Allocation; Geometric Programming; 3GPP-LTE; PUCCH Format 2; Complex-field coding; Signal Space Diversity; Optimization; Superposition Coding;

   Abstract : Reliability of data transmission is a fundamental problem in wireless communications. Fading in wireless channels causes the signal strength to vary at the receiver and this results in loss of data packets. To improve the reliability, automatic repeat request (ARQ) schemes were introduced. READ MORE

7. 5. Design and Analysis of Highly Linear Integrated Wideband Amplifiers

   Author : Henrik Sjöland; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CMOS; nonlinearity cancellation; intermodulation distortion; RF amplifiers; IF amplifiers; audio amplifiers; power amplifiers; wideband amplifiers; analog integrated circuits; low voltage; amplifiers; distortion; bipolar; Electronics; Elektronik;

   Abstract : This dissertation deals with techniques for designing integrated amplifiers with high linearity. Amplifiers with operating frequencies from Audio to RF have been built. An enhanced feedback configuration, capable of very low distortion, is presented. READ MORE