Search for dissertations about: "radio-frequency"

Showing result 1 - 5 of 213 swedish dissertations containing the word radio-frequency.

  2. 1. Radio Frequency InGaAs MOSFETs

    Author : Navya Sri Garigapati; NanoLund: Centre for Nanoscience; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; III-V compound semiconductor; InGaAs MOSFET; Quantum well; Nanowire; Radio Frequency; Band structure calculation; k.p calculations; Strain engineering; ballistic electron transport; S-parameters;

    Abstract : III-V-based Indium gallium arsenide is a promising channel material for high-frequency applications due to its superior electron mobility property. In this thesis, InGaAs/InP heterostructure radio frequency MOSFETs are designed, fabricated, and characterized. READ MORE

  4. 2. Radio Frequency Power Amplifiers : Behavioral Modeling, Parameter Reduction, and Digital Predistortion

    Author : Magnus Isaksson; Peter Händel; José C. Pedro; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation; Electronics;

    Abstract : This work considers behavioral modeling, parameter-reduction, and digital predistortion of radio frequency power amplifiers. Due to the use of modern digital modulation methods, contemporary power amplifiers are frequently subjected to signals characterized by considerable bandwidths and fast changing envelopes. READ MORE

  5. 3. On Radio Frequency Behavioral Modeling : Measurement Techniques, Devices and Validation Aspects

    Author : Per N. Landin; Peter Händel; Magnus Isaksson; Wendy Van Moer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Elektronik;

    Abstract : Effektförstärkare för radiofrekvensapplikationer utgör fortfarande ett av de största problemen i trådlösa kommunikationssystem. Detta beror på att dessa förstärkare är ickelinjära, har låg energieffektivitet och ger mycket distortioner. Bättre verktyg för att förstå och korrigera dessa beteenden är nödvändiga. READ MORE

  6. 4. Dosimetry of Local Radio Frequency Exposure

    Author : Rudolf Kopecky; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; subgridding; FDTD; rats; head; SAR; dosimetry; inner ear labyrinth; mobile phone;

    Abstract : Finite-difference time-domain (FDTD) is a popularcomputational electrodynamics modelling technique. It has been widelyused, from radar cross section computations through electromagneticcompatibility investigations to modelling of electromagnetic exposurein biological tissues. READ MORE

  7. 5. Fuel characterisation with radio-frequency spectroscopy

    Author : Jenny Nyström; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal energy engineering; Termisk energiteknik; Energi- och miljöteknik;

    Abstract : .... READ MORE