Search for dissertations about: "submillimeter mixer"
Showing result 1 - 5 of 7 swedish dissertations containing the words submillimeter mixer.
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1. Radioastronomy Instrumentation for Herschel and APEX Projects
Abstract : This thesis presents work done in developing instrumentation for sub-mm radio astronomyprojects.The first part covers Gaussian beam measurements for the Heterodyne Instrument for Far-Infrared (HIFI) of the Herschel Space Observatory project by the European Space Agency. READ MORE
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2. NbN and NbTiN Hot Electron Bolometer THz Mixers
Abstract : The thesis reports the development of Hot Electron Bolometer (HEB) mixers for radio astronomy heterodyne receivers in THz frequency range. Part of this work is the fabrication of HEB devices, which are based on NbN or NbTiN superconducting thin films (≤5 nm). They are integrated with wideband spiral or double-slot planar antennas. READ MORE
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3. Submillimeter Heterodyne Array for High-speed Radio Astronomy
Abstract : .... READ MORE
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4. Antenna Integrated Superconducting Mixers
Abstract : This thesis investigates the prospects of some different superconducting mixers integrated with planar antennas for the millimeter and submillimeter regime. Two kinds of Superconductor/Insulator/Superconductor (SIS) tunnel junctions for use in mixers have been fabricated; Nb/PbBi edge junctions and Nb trilayer junctions. READ MORE
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5. Heterodyne mixers based on YBa2Cu3O7-δ
Abstract : .... READ MORE