Sökning: "phase modulation"

Visar resultat 21 - 25 av 77 uppsatser innehållade orden phase modulation.

  1. 21. Study of neural correlates of attention in mice with spectro-spatio-temporal approaches

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Cantin Ortiz; [2018]
    Nyckelord :gamma; bursts; neuroscience; attention; mice; LFP; gamma bursts; local field potential; phase randomization; cognition; cognitive process; modulation; spike; neuron; prefrontal cortex; PFC; pre-frontal; tetrode; filtering; Hilbert transform; recordings; oscillation; gamma band;

    Sammanfattning : While signatures of attention can be observed in widespread areas within and outside of cortex, the control of attention is thought to be regulated by higher cognitive brain areas, such as the prefrontal cortex. In their recent study on mice Kim et al. LÄS MER

  3. 22. Model Predictive Control of Electric Drives -Design, Simulation and Implementation of PMSM Torque Control

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Levente Zsolt Pap; [2018]
    Nyckelord :PMSM; Field Oriented Control; Model Prediction Control; Inverter; Electric Drive; DSP;

    Sammanfattning : The thesis deals with the design of a permanent magnet synchronous machine controller that isimplemented on an embedded platform to replace the off-the-shelf controller currently being used in theelectric race car of the KTH Formula Student team. Software implementation of the control algorithmwas tested in laboratory environment on the hardware prototype of a 2-level three-phase voltage sourceinverter. LÄS MER

  4. 23. Design of a power amplifier for NB-IoT

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Rajeshwari Yogi; [2018]
    Nyckelord :NB-IoT; Power amplifier; Inverse class D power amplifer; Technology and Engineering;

    Sammanfattning : An inverse class D power amplifier and a class A power amplifier are designed at schematic level for 20 dBm power class and NB-IoT specification in 65 nm CMOS technology. A suitable switch mode supply modulator is also designed. LÄS MER

  5. 24. Possibilities and Challenges in Temporal Control of XUV Pulses by Opto-optical Modulation

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Anna Olofsson; [2018]
    Nyckelord :Quantum Control; Atomic physics; ultrashort pulses; attosecond science; ultrafast optics; nonlinear optics; opto-optic modulator; Physics and Astronomy;

    Sammanfattning : Recent developments in opto-optical modulation technique calls for improved temporal control of light modulation processes of coherent XUV light. This thesis project evaluates an experimental method aimed at achieving redirection and amplitude modulation of XUV-light, by using precise determination of decay times in states of noble gases that are deemed suitable for opto-optical control. LÄS MER

  7. 25. Digitally Controlled Oscillator for mm-Wave Frequencies

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Rikard Gannedahl; Johan Holmstedt; [2018]
    Nyckelord :RF; RFIC; oscillator; DCO; mm-wave; Technology and Engineering;

    Sammanfattning : In the fifth generation of mobile communication, 5G, frequencies above 30 GHz, so-called millimeter-wave (mm-wave) frequencies are expected to play a prominent role. For the synthesis of these frequencies, the all-digital phase locked loop (ADPLL) has recently gained much attention. LÄS MER