Search for dissertations about: "HEB mixer"

Showing result 1 - 5 of 11 swedish dissertations containing the words HEB mixer.

  2. 1. NbN and NbTiN Hot Electron Bolometer THz Mixers

    Author : Pourya Khosropanah; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; receiver noise; hot electron bolometer; superconducting detector; spiral antenna; NbTiN; submillimeter mixer; THz mixer; HEB; FTS; NbN; quasioptical receiver; heterodyne receiver; double slot antenna; twin slot antenna; Fourier Transform Spectrometer;

    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

  4. 2. Low and High Tc Bolometer Detectors for THz Frequencies

    Author : Auréle Adam; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; direct detection; HEB; Terahertz technology; hot spot model; Sub-millimetre wave; NbN; YBaCuO; Heterodyne Mixer; hot electron bolometer;

    Abstract : .... READ MORE

  5. 3. Submillimeter Heterodyne Array for High-speed Radio Astronomy

    Author : Jean Baubert; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HEB; Terahertz technology; Sub-millimetre wave; Hot Electron Bolometer; Heterodyne Mixer;

    Abstract : .... READ MORE

  6. 4. Integration and Characterisation of Superconducting HEB Mixers for the Herschel Space Observatory

    Author : Therese Berg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HEB mixer; Herschel Space Observatory; terahertz technology;

    Abstract : .... READ MORE

  7. 5. Antenna Integrated Superconducting Mixers

    Author : Hans Ekström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tapered slotline antenna; mixer; double dipole antenna; superconducting; hot electron; receiver; Niobium; bolometer; trilayer junction; edge junction; Niobium Nitride; SIS;

    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