Sökning: "Chamber"

Visar resultat 1 - 5 av 622 avhandlingar innehållade ordet Chamber.

1. 1. Propagation environment modeling using scattered field chamber

   Författare :Magnus Otterskog; Dag Stranneby; Pertti Vainikainen; Örebro universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reverberation Chamber; Scattered Field Chamber; Propagation environments; Antenna measurements; Electrical engineering; Elektroteknik; Elektronik; Electronics;

   Sammanfattning : This thesis covers the development of the Reverberation Chamber as a measurement tool for cell phone tests in electronic production. It also covers the development of the Scattered Field Chamber as a measurement tool for simulations of real propagation environments. LÄS MER

3. 2. Determination of VOC Emissions from Surface Coatings by Environmental Test Chamber Measurements

   Författare :Alireza Afshari; RISE; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chamber; surface coating; emission rate; measurement; VOC; concentration;

   Sammanfattning : The emitting properties of different building materials are obtained by measurements in environmental chambers of a few established designs. In order to interpret the results from the measurements and to predict the influence on the indoor environment, it is necessary to have a good understanding of the parameters governing the emission process. LÄS MER

4. 3. The mold of writing : style and structure in Strindberg's chamber plays

   Författare :Erik van Ooijen; Lars-Åke Skalin; Ola Holmgren; Örebro universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; August Strindberg; chamber play; literary form; writing; focus; ruin as form; simulation; speed; weed as form; Literature; Litteraturvetenskap; HUMANITIES and RELIGION; HUMANIORA och RELIGIONSVETENSKAP; Aesthetic subjects; Estetiska ämnen; Litteraturvetenskap; Literature;

   Sammanfattning : The thesis examines the five plays published by August Strindberg under the label of Chamber Plays: Stormy Weather, The Burned Lot, The Ghost Sonata, The Pelican (all 1907), and The Black Glove (1909). It takes its point of departure in a particular aspect of Strindberg’s way of writing as he actually describes it himself: during the act of deliberate composing, a productive fever tends to emerge bringing an element of chance to the work. LÄS MER

5. 4. Characterization of Terminal Antennas for Diversity and MIMO Systems by Theory, Simulations and Measurements in Reverberation Chamber

   Författare :Kent Rosengren; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mode stirred chamber; embedded pattern; channel capacity; radiation efficiency; reverberation chamber; embedded element; MIMO; diversity gain;

   Sammanfattning : This thesis is based on the work of designing and building a small reverberation chamber, and to use this chamber for characterization of antennas on mobile terminals such as phones. The characterization is done in terms of radiation efficiency, diversity gain and maximum available capacity. LÄS MER

7. 5. Studies of Three Different Methods to Estimate the Up-link Performance of Mobile Phone Antennas

   Författare :Sathyaveer Prasad; Peter Händel; Claes Beckman; Jan Carlsson; Högskolan i Gävle; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antenna measurements; mobile phones; total radiated power; reverberation chamber; anechoic chamber; Telia Scattered Field Method; Maximum likelihood Estimator; Telecommunication; Telekommunikation;

   Sammanfattning : Antennas play an important role in determining the overall radio performance for wireless communications. If all other radio components perform according to their specifications, the performance of a mobile phone can be entirely determined by measuring the efficiency of its antenna. LÄS MER