Near-Field Measurements of a Millimeter-Wave Reflectarray at 120 GHz

S. Makela*, A. Tamminen, J. Ala-Laurinaho, A. V. Räisänen, Päivi K. Koivisto, J. Saily, J. Hakli, P. Rantakari, R. Tuovinen, A. Luukanen

*Corresponding author for this work

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


    In this paper, we describe the near-field measurements of the surface of a 120 GHz reflectarray. The reconfigurable offset-fed reflectarray under development consist of approximately 3700 coplanar patch antenna elements which are individually controlled by 4-state micro-electro-mechanical (MEMS) phase shifters. Measurements of a static reflectarray preceding the MEMS-controlled one are done in order to characterize the behavior of individual antenna elements of the reflectarray. Measurement setup, probe selection and the effect of the directional coupler are described. Amplitude and phase patterns of the reflectarray are shown. Also the main characteristics of the static reflectarray under test are presented.

    Original languageEnglish
    Title of host publication2012 9TH EUROPEAN RADAR CONFERENCE (EURAD)
    Number of pages4
    ISBN (Print)978-1-4673-2471-7, 978-2-87487-029-3
    Publication statusPublished - 2012
    MoE publication typeA4 Article in a conference publication
    EventEuropean Microwave Week - Amsterdam, Netherlands
    Duration: 28 Oct 20122 Nov 2012
    Conference number: 15

    Publication series

    NameEuropean Radar Conference EuRAD


    ConferenceEuropean Microwave Week


    • antenna measurements
    • millimeter-wave
    • reflectarray
    • near-field-probe measurements


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