MURAL - Maynooth University Research Archive Library



    Dammann Gratings for Local Oscillator Beam Multiplexing


    Murphy, J.Anthony and Withington, S. and van de Stadt, H. (1995) Dammann Gratings for Local Oscillator Beam Multiplexing. In: Multi-Feed Systems for Radio Telescopes. Workshop held in Tucson, Arizona, May 16-18, 1994. Astronomical Society of the Pacific Conference Series (75). Astronomical Society of the Pacific, pp. 238-244. ISBN 0937707945

    [img]
    Preview
    Download (604kB) | Preview


    Share your research

    Twitter Facebook LinkedIn GooglePlus Email more...



    Add this article to your Mendeley library


    Abstract

    In submillimetre-wave heterodyne imaging systems, optical coupling provides the most efficient way of combining local oscillator power with the array of signals from the telescope. For systems limited to one local oscillator source an ideal optical-coupling scheme would produce an array of appropriately scaled images of the local oscillator feed at the detectors without any loss in power. One candidate for a beam multiplexing system is the combination of an interferometric couple with a type of binary phase grating known as a Dammann grating. In this paper, we consider in some detail the feasibility of such a system.

    Item Type: Book Section
    Additional Information: Cite as: Murphy, John & Withington, Stafford & Stadt, H.. (1995). Dammann Gratings for Local Oscillator Beam Multiplexing. 75. 238.
    Keywords: Dammann Gratings; Local Oscillator; Beam Multiplexing;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 14047
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 19 Feb 2021 16:21
    Publisher: Astronomical Society of the Pacific
    Refereed: Yes
    URI:

      Repository Staff Only(login required)

      View Item Item control page

      Downloads

      Downloads per month over past year