Sökning: "Johan Mast"

Hittade 2 uppsatser innehållade orden Johan Mast.

1. 1. Visualizing and Controlling Coupling Paths Between Antennas Installed on Common Platforms

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Johan Lundgren; [2020]
   Nyckelord :;

   Sammanfattning : In this work, a methodology to visualize and mitigate antenna coupling ina systematic way is proposed, which can be used to increase the isolationbetween dierent antenna systems installed on a common platform. Formulationsfor visualizing the coupling in space, based on reciprocity are derivedfrom the reaction theorem and the dierent formulations are compared witheach other through numerical simulations in CST Microwave Studio and bypost-processing in Matlab. LÄS MER

3. 2. Detektion av fasta ekon vid vindmätning med SODAR

   Kandidat-uppsats, Högskolan i Jönköping/JTH, Datateknik och informatik

   Författare :Viktor Holmgren; Karl-Johan Vikmyr; [2017]
   Nyckelord :SODAR; vindmätning; fasta ekon; mätinstrument;

   Sammanfattning : Purpose – The purpose of this thesis was to facilitate the search for echoes caused by fixed objects, so called fixed echoes, when using SODAR-technique for wind measurements. Furthermore, it was investigated how fixed echoes in measurements can change based on different conditions such as: the angle of the sound beam towards the object causing the echo, the output frequency of the instrument, the air temperature and relative humidity. LÄS MER