Search for dissertations about: "elektronik"

Showing result 1 - 5 of 3906 swedish dissertations containing the word elektronik.

  1. 1. From Noise-Shaped Coding to Energy Efficiency - One bit at the time

    University dissertation from Chalmers University of Technology

    Author : Ulf Gustavsson; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektronik; Electronics; Signalbehandling; Signal processing; Telekommunikation; Telecommunication; ΣΔ-modulation; radio frequency power amplifier; power efficiency;

    Abstract : Three parameters that drive the research and development of future RF transmitter technologies for high speed wireless communication today are energy efficiency, flexibility and reduction of the physical footprint. This thesis treats the use of single-bit quantization in conjunction with a method called Noise-Shaped Coding (NSC), as an enabler for these parameters, foremost in terms of energy efficiency. READ MORE

  2. 2. Reliability, fatigue and mechanical characterization of lead-free solders for electronic packaging applications

    University dissertation from Chalmers University of Technology

    Author : Cristina Andersson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektronik; Electronics; Isothermal mechanical fatigue; Thermal fatigue; Low cycle fatigue; Tensile tests; Mechanical behavior; Lead-free solders; Electronics; Reliability.;

    Abstract : The ever increasing amount of electronic waste, most of which ends up in landfills, has become a serious worldwide concern. In addition to this, the fact that Pb is highly toxic and harmful to humans has lead to the ban of this element from the electronics industry. READ MORE

  3. 3. On Design, Analysis, and Implementation of LDI/LDD Lattice Filters

    University dissertation from Chalmers University of Technology

    Author : Johnny Holmberg; Mälardalens högskola.; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Electrical engineering; electronics and photonics Electronics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektronik; Elektronik;

    Abstract : .... READ MORE

  4. 4. Detection of Partial Discharges at Fast Rising Voltages

    University dissertation from Chalmers University of Technology

    Author : Thomas Hammarström; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektronik; Electronics; Elektronisk mät- och apparatteknik; Electronic measurement and instrumentation; Elkraftteknik; Electric power engineering; Konstruktionsmaterial; Construction materials; Partial discharges; square like voltages; measurements; cavities; repetitive voltages; short rise time; high dV dt.;

    Abstract : The present demand for higher efficiency and flexibility in the energy sector has led to an increased use of power electronic generated waveforms as these allow energy conversion between different frequencies including DC. The generated waveforms are usually synthesized by so called Pulse Width Modulation (PWM) techniques, where the desired waveform is approximated by a number of square shaped pulses with a short rise time. READ MORE

  5. 5. Integration and Analysis of RF-Power LDMOS Transistors

    University dissertation from Uppsala : Uppsala Universitet

    Author : Olof Bengtsson; Högskolan i Gävle.; Uppsala universitet.; Uppsala universitet.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Electrical engineering; electronics and photonics Electronics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektronik;

    Abstract : .... READ MORE