Sökning: "envelope tracking"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden envelope tracking.

  1. 1. The visibility of stellar transients in the Galactic Centre

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Astrofysik

    Författare :Jonathan Ström; [2024]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : A semi-analytical simulation was developed to evaluate the K-band magnitudes of Red Giants [0.96 - 1.02 M⊙] orbiting the supermassive black hole in the galactic centre. The model assumed star formation between 10-12 Gyrs ago and by following the IMF and applying a random age condition, a stellar population was created. LÄS MER

  3. 2. Investigating power amplifier behavior in User Equipment terminals

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

    Författare :Adyasha Panda; [2021]
    Nyckelord :Power Amplifier; Technology and Engineering;

    Sammanfattning : In this thesis work, experiments have been carried out to study the behavior of radio frequency power amplifier which is the one of the largest power consumers in a user equipment which is a mobile phone in this case. A CMW-500 which is a Rohde and Schwarz equipment has been used to emulate the base station. LÄS MER

  4. 3. 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. 4. "Change Emergence" : (Investigating and Exploring the Potential of Computational Design in Renovation and Development)

    Master-uppsats, KTH/Arkitektur

    Författare :Sareh Saeidi Derakhshi; [2015]
    Nyckelord :Linjalen; Södermalm; Stockholm; Residential Complex;

    Sammanfattning : ABSTRACT (DESIGN HYPOTHESIS AND COLLABORATION OBJECTIVES) This research proposes the renovation of a case study project - a cluster of residential buildings in Södermalm, Stockholm - based on the integration of energy simulation and climate engineering to introduce the idea of adaptive resuse[MJ1] . The focus has been on solar analysis and daylight utilization with the goal to improve both the living quality of the interior and solar harvesting on the exterior for an optimal generation utilization of energy. LÄS MER

  7. 5. Linearity Aspects of Dynamic PA Supply-Modulation Systems with Emphasis on Modulator Modeling and non-linearities

    Master-uppsats, Avdelningen för elektronik, matematik och naturvetenskap

    Författare :Robert Glen Perea Tamayo; [2012]
    Nyckelord :EER; Envelope tracking; hybrid switching amplifiers; power amplifiers supply modulation;

    Sammanfattning : Modern communication systems operate with high peak-to-average-power ratio (PAPR) over wide bandwidth. Linearity requirements force operation in a low efficient highly linear back-off region. Then increasing efficiency is becoming critical. One of the most promising technologies to accomplish this is using supply modulation, e. LÄS MER