Sökning: "TAI"

Visar resultat 1 - 5 av 28 avhandlingar innehållade ordet TAI.

  1. 1. Fundamental Limits in Wireless Wideband Networking

    Författare :Tan Tai Do; Mikael Skoglund; Tobias Oechtering; Olav Tirkkonen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The rapid growth of the wireless communication industry recently does not only bring opportunities but also challenges on developing radio technologies and solutions that can support high data rate as well as reliable and efficient communications. Two fundamental factors that limit the transmission rate are the available transmit energy and the available bandwidth. LÄS MER

  3. 2. Efficient Integrated Circuits for Wideband Wireless Transceivers

    Författare :Quoc-Tai Duong; Atila Alvandpour; Henrik Sjöland; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The proliferation of portable communication devices combined with the relentless demand for higher data rates has spurred the development of wireless communication standards which can support wide signal bandwidths. Benefits of the complementary metal oxide semiconductor (CMOS) process such as high device speeds and low manufacturing cost have rendered it the technology of choice for implementing wideband wireless transceiver integrated circuits (ICs). LÄS MER

  4. 3. MOCVD growth of GaN-based high electron mobility transistor structures

    Författare :Jr-Tai Chen; Erik Janzén; Urban Forsberg; James S. Speck; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The present work was to improve the overall quality of GaN-based high electron mobility transistor (HEMT) epitaxial structures grown on semi-insulating (SI) SiC and native GaN substrates, using an approach called bottom-to-top optimization. The bottom-to-top optimization means an entire growth process optimization, from in-situ substrate pretreatment to the epitaxial growth and then the cooling process. LÄS MER

  5. 4. Surface characterization and manipulation of polyampholytic hydrogel coatings

    Författare :Feng-I Tai; Thomas Ederth; Bo Liedberg; Lei Ye; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrogels; antifouling; charge-balanced material; polyampholytes; force measurements; polymer swelling; protein adsorption; patterning; plasmonics;

    Sammanfattning : This thesis is dedicated to building up fundamental knowledge about polyampholytic hydrogels, which are developed in our group for anti-fouling purposes. Charge-balanced polymers, where positive and negative charges balance each other, have emerged as interesting candidates for many applications in materials science. LÄS MER

  7. 5. EM study of Mesoporous Crystals, Hollow Spheres and Intergrowth Tungsten Bronzes

    Författare :Miia Klingstedt; Osamu Terasaki; Margareta Sundberg; Cheuk-Wai Tai; Viveka Alfredsson; Stockholms universitet; []
    Nyckelord :Structural Chemistry; strukturkemi;

    Sammanfattning : .... LÄS MER