Sökning: "Sigma-Delta Analog-to-Digital Converter"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Sigma-Delta Analog-to-Digital Converter.

1. 1. Timing Uncertainty in Sigma-Delta Analog-to-Digital Converters

   Författare :Adam Strak; Hannu Tenhunen; Franco Maloberti; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; timing uncertainty; clock jitter; Sigma-Delta Analog-to-Digital Converter; sampling; clock generation; power-supply noise; substrate noise; Electronics; Elektronik;

   Sammanfattning : Denna avhandling presenterar en undersökning av orsakerna och effekterna av timingosäkerhet i Sigma-Delta Analog-Digital-Omvandlare, med speciellt fokus på Sigma-Delta av den switchade kapacitanstypen. Det undersökta området för orsakerna till timingosäkerhet är digital klockgenerering och området för effekterna är sampling. LÄS MER

3. 2. Power-Efficient Continuous-Time Incremental Sigma-Delta Analog-to-Digital Converters

   Författare :Sha Tao; Ana Rusu; Franco Maloberti; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; analog-to-digital conversion; sigma-delta modulation; incre- mental ADC; two-step ADC; continuous-time; biosensor applications.;

   Sammanfattning : Over the past decade, there has been a growing interest in the devel- opment of integrated circuits (ICs) for wearable or implantable biosensors, aiming at providing personalized healthcare services and reducing the health-care expenses. In biosensor ICs, the analog-to-digital converter (ADC) is a key building block that acts as a bridge between analog signals and digital processors. 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. Charge Sampling Circuits and A/D Converters - Theory and Experiments

   Författare :Gang Xu; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pipelined A D converter; sigma-delta modulator; differential difference comparator; 2-step A D converter; FIR filter; analog filter; thermal noise; clock jitter; sub-sampling; RF sampling; current-mode sampling; Charge samling; A D converter; flexible A D converter; Electronics and Electrical technology; Elektronik och elektroteknik;

   Sammanfattning : The analysis of general charge sampling technique is presented in this thesis. Charge sampling integrates input current instead of tracking input voltage to realize high speed and low voltage sampling. The analysis focuses on the performance of general charge sampling circuits for signal capture. LÄS MER

7. 5. Sigma-delta based techniques for future multi-standard wireless radios

   Författare :Steffen Albrecht; Mohammed Ismail Elnaggar; Franz Dielacher; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electronic structure; Elektronstruktur;

   Sammanfattning : Improvements in process technology and design innovations have resulted in compact and cost effective digital baseband solutions. The radio part, however, has remained a bottleneck in terms of chip area and power consumption as the feature size of analog devices does not directly benefit from scaling. LÄS MER