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  • 1.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    Altering the amplitude statistics inside a scattered field chamberManuscript (preprint) (Other academic)
  • 2.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    Antenna reflection coefficient measurements in a scattered field chamber2001Manuscript (preprint) (Other academic)
  • 3.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    Environment simulations for MEG measurements inside reverberation chamberManuscript (Other academic)
  • 4.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    Modelling of propagation environments inside a scattered field chamber2005In: IEEE 61st Vehicular technology conference, 2005. VTC 2005-Spring: Volume 1, 2005, p. 102-105Conference paper (Refereed)
    Abstract [en]

    Measurements on communication devices for evaluation of diversity and/or MIMO concepts must be made in the real environment or in a model of the real propagation environment. As a first step towards a complex, physical environment model the plane wave angular distribution, incident on the device under test (DUT), is altered in order to model plane wave angular distributions of real environments. Here a specialized reverberation chamber called the scattered field chamber (SFC) is used to create a source of Rayleigh faded plane waves and a shielded anechoic box with apertures is used to alter the angular distribution of the plane waves incident on the DUT. According to the measurements made, the model seems to be able to produce data that show agreement with measurements made on real propagation environments.

  • 5.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    Polarization control in an scattered field chamberManuscript (preprint) (Other academic)
  • 6.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    Propagation environment modeling using scattered field chamber2006Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis covers the development of the Reverberation Chamber as a measurement tool for cell phone tests in electronic production. It also covers the development of the Scattered Field Chamber as a measurement tool for simulations of real propagation environments.

    The first part is a more ”general knowledge about Reverberation Chambers”-part that covers some important phenomena like unstirred power and position dependence that might occour in a small Reverberation Chamber used for cell phone tests. Knowing how to deal with these phenomenas, give the possibility to use the chamber as a measurement tool for production tests even though it is too complex for a simple test of the antenna function.

    The second part shows how to alter some important propagation parameters inside the chamber to fit some real world propagation environments. The 3D plane wave distribution, the polarization and the amplitude statistics of the plane waves are all altered with simple techniques that are implementable all together. A small, shielded anechoic box with apertures is used to control 3D plane wave distribution and polarization. Antennas that introduce unstirred power in the chamber are used to control the statistics.

    List of papers
    1. Antenna reflection coefficient measurements in a scattered field chamber
    Open this publication in new window or tab >>Antenna reflection coefficient measurements in a scattered field chamber
    2001 (English)Manuscript (preprint) (Other academic)
    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3157 (URN)
    Note
    The 2001 Reverberation Chamber, Anechoic Chamber and OATS Users MeetingAvailable from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
    2. Cell phone performance testing and propagation environment modelling in a reverberation chamber
    Open this publication in new window or tab >>Cell phone performance testing and propagation environment modelling in a reverberation chamber
    2003 (English)In: Proceedings of The 2003 Reverberation Chamber, Anechoic Chamber and OATS Users Meeting, 2003Conference paper, Published paper (Refereed)
    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3158 (URN)
    Conference
    The 2003 Reverberation Chamber, Anechoic Chamber and OATS Users Meeting, Austin, Texas
    Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
    3. On creating a nonisotropic propagation environment inside a scattered field chamber
    Open this publication in new window or tab >>On creating a nonisotropic propagation environment inside a scattered field chamber
    2004 (English)In: Microwave and optical technology letters (Print), ISSN 0895-2477, E-ISSN 1098-2760, Vol. 43, no 3, p. 192-195Article in journal (Refereed) Published
    Abstract [en]

    A traditional reverberation chamber creates a statistically isotropic test environment. Tests of communication devices may demand different environments to be able to test, for example, the influence of a diversity antenna. Here, a simple way of altering the distribution of plane waves incident on the device under test is presented. © 2004 Wiley Periodicals, Inc.

    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3159 (URN)10.1002/mop.20417 (DOI)
    Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-12-14Bibliographically approved
    4. Environment simulations for MEG measurements inside reverberation chamber
    Open this publication in new window or tab >>Environment simulations for MEG measurements inside reverberation chamber
    (English)Manuscript (Other academic)
    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3160 (URN)
    Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
    5. The influence of stirrer size and chamber load on the number of uncorrelated samples created in a reverberation chamber
    Open this publication in new window or tab >>The influence of stirrer size and chamber load on the number of uncorrelated samples created in a reverberation chamber
    2005 (English)Manuscript (preprint) (Other academic)
    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3161 (URN)
    Note
    Proceedings of EMC Zürich 2005Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
    6. Modelling of propagation environments inside a scattered field chamber
    Open this publication in new window or tab >>Modelling of propagation environments inside a scattered field chamber
    2005 (English)In: IEEE 61st Vehicular technology conference, 2005. VTC 2005-Spring: Volume 1, 2005, p. 102-105Conference paper, Published paper (Refereed)
    Abstract [en]

    Measurements on communication devices for evaluation of diversity and/or MIMO concepts must be made in the real environment or in a model of the real propagation environment. As a first step towards a complex, physical environment model the plane wave angular distribution, incident on the device under test (DUT), is altered in order to model plane wave angular distributions of real environments. Here a specialized reverberation chamber called the scattered field chamber (SFC) is used to create a source of Rayleigh faded plane waves and a shielded anechoic box with apertures is used to alter the angular distribution of the plane waves incident on the DUT. According to the measurements made, the model seems to be able to produce data that show agreement with measurements made on real propagation environments.

    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3162 (URN)10.1109/VETECS.2005.1543258 (DOI)0-7803-8887-9 (ISBN)
    Conference
    IEEE 61st Vehicular technology conference. VTC 2005-Spring, 30 May-1 June
    Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
    7. Polarization control in an scattered field chamber
    Open this publication in new window or tab >>Polarization control in an scattered field chamber
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3163 (URN)
    Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
    8. Altering the amplitude statistics inside a scattered field chamber
    Open this publication in new window or tab >>Altering the amplitude statistics inside a scattered field chamber
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Electrical Engineering, Electronic Engineering, Information Engineering
    Research subject
    Electronics
    Identifiers
    urn:nbn:se:oru:diva-3164 (URN)
    Available from: 2006-10-27 Created: 2006-10-27 Last updated: 2017-10-18Bibliographically approved
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  • 7.
    Otterskog, Magnus
    Örebro University, Department of Technology.
    The influence of stirrer size and chamber load on the number of uncorrelated samples created in a reverberation chamber2005Manuscript (preprint) (Other academic)
  • 8.
    Otterskog, Magnus
    et al.
    Örebro University, Department of Technology.
    Madsén, Kent
    Cell phone performance testing and propagation environment modelling in a reverberation chamber2003In: Proceedings of The 2003 Reverberation Chamber, Anechoic Chamber and OATS Users Meeting, 2003Conference paper (Refereed)
  • 9.
    Otterskog, Magnus
    et al.
    Örebro University, Department of Technology.
    Madsén, Kent
    On creating a nonisotropic propagation environment inside a scattered field chamber2004In: Microwave and optical technology letters (Print), ISSN 0895-2477, E-ISSN 1098-2760, Vol. 43, no 3, p. 192-195Article in journal (Refereed)
    Abstract [en]

    A traditional reverberation chamber creates a statistically isotropic test environment. Tests of communication devices may demand different environments to be able to test, for example, the influence of a diversity antenna. Here, a simple way of altering the distribution of plane waves incident on the device under test is presented. © 2004 Wiley Periodicals, Inc.

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