Antenna-coupled microbolometers for passive THz direct detection imaging arrays

Panu Helistö, Arttu Luukanen, Leif Grönberg, Jari S. Penttilä, Heikki Seppä, Hannu Sipola, C.R. Dietlein, E.N. Grossman

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    21 Citations (Scopus)


    In the recent years, millimetre wave and THz imaging have received a vast amount of interest due to the interesting possibilities and applications that imaging at these frequencies could enable. Many of the applications that have generated substantial interest (such as stand-off concealed weapons detection) often require exquisite sensitivity, while a low system cost is required. In this paper we discuss one potential candidate for affordable imaging arrays: an antenna-coupled superconducting microbolometer. We show that these devices possess capabilities that are hard to meet with other passive detection schemes. While refrigeration to cryogenic temperatures is required for maximum performance, we show that the devices can be operated within a cryogen-free refrigerator that allows for turn-key operation. Comparison with other detectors is presented.
    Original languageEnglish
    Title of host publicationProceedings of the 1st European Microwave Integrated Circuits Conference, EuMIC 2006
    Subtitle of host publicationManchester, England, 10 - 13 Oct. 2006
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Print)978-2-9600551-8-4, 2-9600551-8-7
    Publication statusPublished - 2006
    MoE publication typeA4 Article in a conference publication


    • Bolometers
    • Concealed weapons detection
    • Millimetre-wave imaging
    • THz radiation


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