Sökning: "operational amplifier"

Visar resultat 6 - 10 av 24 uppsatser innehållade orden operational amplifier.

  1. 6. Battery-free Visible Light Sensing

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för datorteknik

    Författare :Andreas Soleiman; [2019]
    Nyckelord :Networked embedded systems; Visible light sensing; RF backscatter; Energy harvesting;

    Sammanfattning : In this thesis, we show that it is possible to design a battery-free light sensing system that can sense and communicate hand gestures while operating fully on harvested power from indoor light. We present two main innovations that push our system to tens of microwatts of power to enable battery-free operation. LÄS MER

  3. 7. Power-Efficient Settling Time Reduction Techniques for a Folded-Cascode Amplifier in 1.8 V, 0.18 um CMOS

    Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System; Linköpings universitet/Tekniska fakulteten

    Författare :Jimmy Johansson; [2017]
    Nyckelord :Folded-Cascode; Settling Time; Settling Time Reduction; Slew Rate; Slew Rate Enhancement; Operational Amplifier; Recycling Folded-Cascode; 180 nm CMOS; Test Buffer; Power-Efficient; Single-Stage Amplifier; Linear Settling Period; Slewing Period;

    Sammanfattning : Testability is crucial in today’s complex industrial system on chips (SoCs), where sensitive on-chip analog voltages need to be measured. In such cases, an operational amplifier (opamp) is required to sufficiently buffer the signals before they can drive the chip pad and probe parasitics. LÄS MER

  4. 8. Energy Efficiency of Radio Units and its Impact on RAN Energy Consumption

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Thomas Berglund; Helen Huynh; [2017]
    Nyckelord :Energy efficiency; telecommunications; LTE; mobile networks; Technology and Engineering;

    Sammanfattning : As mobile telecommunications networks continue to grow, energy consumption continues to grow with it. This will without a doubt affect both the operational expense for network operators and the environment due to air pollution from power stations. LÄS MER

  5. 9. An efficient Hardware implementation of the Peak Cancellation Crest Factor Reduction Algorithm

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Matteo Bernini; [2016]
    Nyckelord :CFR; PC-CFR; PAPR Reduction; OFDM; CFR; PC-CFR; PAPR Reduction; OFDM;

    Sammanfattning : An important component of the cost of a radio base station comes from to the Power Amplifier driving the array of antennas. The cost can be split in Capital and Operational expenditure, due to the high design and realization costs and low energy efficiency of the Power Amplifier respectively. LÄS MER

  7. 10. Design and Implementation of a Low-Power SAR-ADC with Flexible Sample-Rate and Internal Calibration

    Master-uppsats, Elektroniksystem; Tekniska högskolan

    Författare :Johan Lindeberg; [2014]
    Nyckelord :Analog to Digital Converter ADC ; Cyclic; Algorithmic; Incremental; Capacitor mismatch; Compensation;

    Sammanfattning : The objective of this Master's thesis was to design and implement a low power Analog to Digital Converter (ADC) used for sensor measurements. In the complete measurement unit, in which the ADC is part of, different sensors will be measured. LÄS MER