Search for dissertations about: "submillimeter"
Showing result 11 - 15 of 41 swedish dissertations containing the word submillimeter.
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11. Heterostructure barrier varactors
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12. Heterostructure Barrier Varactors for High Efficiency Frequency Multipliers
Abstract : This thesis describes the Heterostructure Barrier Varactor (HBV) and its application in frequency multipliers. Different HBV materials, fabrication processes, and device models are presented. The aim of this work is to improve the efficiency of HBV frequency multipliers. READ MORE
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13. Satellite and ground based observations of massive star forming regions
Abstract : Results from submm/mm radio astronomical observations, using the astronomy/-aeronomy satellite Odin and the 20m telescope at the Onsala Space Observatory, are presented. Analysis of spectroscopic data of interstellar rotational emission lines from gaseous H2O residing in giant molecular clouds (GMCs), reveal important new clues about the chemistry and spatial distribution of water molecules in these regions, including estimates of the water abundance in molecular outflows associated with massive star formation. READ MORE
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14. Heterodyne mixers based on YBa2Cu3O7-δ
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15. Charting Circumstellar Chemistry of Carbon-rich AGB Stars
Abstract : Stars of low to intermediate initial masses (0.8 - 8 M⊙) enter the asymptotic giant branch (AGB) phase during their late evolution. READ MORE