Sökning: "sigma-delta"

Visar resultat 1 - 5 av 28 avhandlingar innehållade ordet sigma-delta.

  1. 1. Wideband Sigma-Delta Modulators

    Författare :Xiaolong Yuan; Svante Signell; Jakob Wikner; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sigma-delta modulator; feedforward; reconfigurable; quadrature bandpass filtering; Electronics; Elektronik;

    Sammanfattning : Sigma-delta modulators (SDM) have come up as an attractive candidatefor analog-to-digital conversion in single chip front ends thanks to the continuousimproving performance. The major disadvantage is the limited bandwidthdue to the need of oversampling. LÄS MER

  3. 2. Silicon Carbide Sigma-Delta Modulatorfor High Temperature Applications

    Författare :Ye Tian; Carl-Mikael Zetterling; Ana Rusu; Jerzy Dabrowski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon carbide SiC ; bipolar; sigma-delta; data conversion; OpAmp; integrated circuit IC ; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : .... LÄS MER

  4. 3. Modeling and Analysis of Wideband Sigma-Delta Noise Shapers

    Författare :Andreas Göthenberg; KTH; []
    Nyckelord :Data Converters; Oversampling; Sigma-Delta; Modulators; Wideband; Noise Shapers; Sampling Switches; Substrate Noise Coupling;

    Sammanfattning : The continuous evolution of CMOS technologies towards deepsubmicron processes has provided new opportunities forintegration of mixed-signal systems on single monolithicintegrated circuits. In order to find the optimal usage of CMOStechnology and robustness against undesired mixed-signalcouplings, new approaches to CMOS front-end integration areneeded. LÄS MER

  5. 4. Digitally Enhanced Continuous-Time Sigma-Delta Analogue-to-Digital Converters

    Författare :Julian Garcia; Ana Rusu; Maurits Ortmanns; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; analogue-to-digital conversion; sigma-delta modulation; digital enhancement; continuous-time; multi-channel applications;

    Sammanfattning : The continuous downscaling of CMOS technology presents advantagesand difficulties for IC design. While it allows faster, denser and more energy efficient digital circuits, it also imposes several challenges which limit the performance of analogue circuits. LÄS MER

  7. 5. 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