Search for dissertations about: "HEB"
Showing result 1 - 5 of 21 swedish dissertations containing the word HEB.
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1. 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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2. Study of MgB2 and YBa2Cu3O7-x Microbolometers for THz Sensing Applications
Abstract : In this thesis, two novel THz detectors based on magnesium diboride (MgB2)and yttrium barium copper oxide (YBa2Cu3O7-x) are presented. In particular,MgB2 superconductor is used for the investigation of hot-electron bolometer(HEB) mixers, while YBa2Cu3O7-x is explored in microbolometers for room-temperaturecoherent and incoherent detection. READ MORE
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3. Ultra-thin Niobium Nitride Films for Hot Electron Bolometer and THz Applications
Abstract : The part of the electromagnetic spectrum between microwaves and infrared, also known as the terahertz band, is of particular interest for radio astronomy. The radiation intensity of the cold universe peaks at this frequency band, thus defining the demand on sensitive low-noise instruments in this particular frequency range. READ MORE
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4. Low and High Tc Bolometer Detectors for THz Frequencies
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5. Submillimeter Heterodyne Array for High-speed Radio Astronomy
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