Sökning: "noise-equivalent power"

Visar resultat 6 - 10 av 16 avhandlingar innehållade orden noise-equivalent power.

  1. 6. Normal Metal Hot-Electron Microbolometer with Superconducting Andreev Mirrors

    Författare :Denis Chouvaev; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis concerns development of the Normal metal hot-electron microbolometer (NHEB). The NHEB is an antenna-coupled direct detector of sub-millimeter wave electromagnetic radiation. LÄS MER

  3. 7. Frequency Selective Cold-Electron Bolometer Arrays

    Författare :Sumedh Mahashabde; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mm-wave detectors; Cold-Electron Bolometer; Frequency Selective Surface; Focal Plane array; OLIMPO; LSPE;

    Sammanfattning : This work presents the integration of the Cold-Electron Bolometer (CEB) in Frequency Selective Surface (FSS) based arrays targeting balloon-borne telescope missions with high incident power requirements (typically tens of pW). FSS are planar frequency sensitive structures typically consisting of repeating pattern of a simple motif like square, circle, etc. LÄS MER

  4. 8. Graphene FET terahertz detectors on flexible substrates

    Författare :Xinxin Yang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sensors; THz detectors; flexible electronics; 2D materials; Graphene; field-effect transistors; plastic substrates.;

    Sammanfattning : Terahertz (THz) science and technology have developed rapidly over the past decades, extending the THz application areas from spectroscopy and earth and space sciences to communications, biomedicine and security sensing. Many of these emerging applications require shape-conforming, light-weight and low-cost detectors rather than existing solid-state detection technology. LÄS MER

  5. 9. Novel Terahertz Emitters and Detectors: InGaAs Slot Diodes and InAs Self-Switching Diodes

    Författare :Andreas Westlund; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; InAs; InGaAs; slot diode; self-switching diode; zero-bias diode;

    Sammanfattning : Two novel types of diodes for emission and detection of THz radiation have been investigated. The diodes are based on high electron mobility III-V heterostructures. Both diodes are aimed for room-temperature operation, for which there is a demand for new THz technology. For emission, slot diodes based on an InGaAs heterostructure were studied. LÄS MER

  7. 10. Characterisation and modelling of graphene FET detectors for flexible terahertz electronics

    Författare :Xinxin Yang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sensors; arrays; scattering parameters; broadband characterisation; graphene; terahertz detectors; field-effect transistors; flexible electronics;

    Sammanfattning : Low-cost electronics for future high-speed wireless communication and non-invasive inspection at terahertz frequencies require new materials with advanced mechanical and electronic properties. Graphene, with its unique combination of flexibility and high carrier velocity, can provide new opportunities for terahertz electronics. LÄS MER