Sökning: "analog integrated circuits"

Visar resultat 1 - 5 av 48 avhandlingar innehållade orden analog integrated circuits.

1. 1. Linear Transmitter Design Using Nonlinear Analog Circuits

   Författare :Bo Shi; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication engineering; Elektronik och elektroteknik; Electronics and Electrical technology; BiCMOS.; CMOS; ASIC; Radio-frequency circuits; Translinear circuits; RF power amplifier linearization; Linear transmitter; Nonlinear analog circuits; Telekommunikationsteknik;

   Sammanfattning : This dissertation deals with analog techniques at both the architecture and circuit design levels for designing power efficient linear radio-frequency (RF) transmitters. The use of nonlinear analog integrated circuits to implement certain critical signal processing functions for the multiplicative feedback and LINC techniques is investigated with the aim of improving the system performance in terms of complexity, linearity and power efficiency. LÄS MER

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

   Författare :Raheleh Hedayati; Carl-Mikael Zetterling; H. Alan Mantooth; KTH; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

4. 3. Reconfigurable Analog to Digital Converters for Low Power Wireless Applications

   Författare :E. Martin I. Gustafsson; Ana Rusu; Georges Gielen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Integrated Circuits; Analog to Digital Converters; Wireless communication; Electronics Engineering; Electrical Engineering; Electronics; Elektronik;

   Sammanfattning : The commercialization of Marconi’s radio transmission and reception, along with the development of integrated circuits in the 1960’s have facilitated many new consumer products for wireless communication, where the mobile phones or handsets are one. These handsets started out as a portable phone, mounted in cars, and have with time added additional services as Short Message Service, and have today become a media center with global positioning, and high-speed internet connection. LÄS MER

5. 4. On Reduction of Substrate Noise in Mixed-Signal Circuits

   Författare :Erik Backenius; Mark Vesterbacka; Jan-Erik Eklund; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mixed-signal; substrate noise; substrate modeling; simultaneous switching noise; SSN; digital; analog; clock; Electronics; Elektronik;

   Sammanfattning : Microelectronics is heading towards larger and larger systems implemented on a single chip. In wireless communication equipment, e.g., cellular phones, handheld computers etc. LÄS MER

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

   Författare :Henrik Sjöland; Institutionen för elektro- och informationsteknik; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER