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Agilent Technologies. Free Space Materials Characterization Shelley Blasdel Begley Application Development Engineer. Agilent Technologies. Agenda What is it? Free Space Measurement Systems Calibration Measurement Results. What is Free Space Materials Characterization?. - PowerPoint PPT Presentation

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  • Free Space Materials Characterization Shelley Blasdel Begley Application Development Engineer Agilent Technologies

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Agenda What is it?Free Space Measurement SystemsCalibrationMeasurement ResultsAgilent Technologies

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • What is Free Space Materials Characterization?

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Measuring Electromagnetic Properties of Materials Using Free Space Measurement Technique.

    Important for:Circuit designMilitary ApplicationsCar Radar ApplicationsNew Materials ResearchIncoming Inspection Quality AssuranceHealth and Safetyand more

    Agilent Technical ForumFree Space Materials Characterization

  • Electromagnetic MaterialsRadar Absorbing and Stealth MaterialsRadome MaterialsElectronic Substrate and Packaging MaterialsSpecific Absorption Rate (SAR) Phantoms

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Transmission Free-Space SystemAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GP-IB or LANNetwork AnalyzerSample holder fixtured between two antennaeComputer (not required for PNA)85071E Materials Measurement SoftwareWith Option 100 Free Space Calibration

    Agilent Technical ForumFree Space Materials Characterization

  • Bio-dielectrics: Theories, Mechanisms, Applications, Stamford Hall, Leicester, UKLightwave Analogy

    IncidentLens

  • Bio-dielectrics: Theories, Mechanisms, Applications, Stamford Hall, Leicester, UKLightwave Analogy

    IncidentReflectedLens

  • Bio-dielectrics: Theories, Mechanisms, Applications, Stamford Hall, Leicester, UKLightwave Analogy

    IncidentReflectedLens

  • Bio-dielectrics: Theories, Mechanisms, Applications, Stamford Hall, Leicester, UKLightwave Analogy

    IncidentReflectedTransmittedLens

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Network Analyzer Block DiagramSOURCEIncidentReflectedTransmittedMUTFixture

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Network Analyzer Block DiagramSIGNALSEPARATIONSOURCEIncidentReflectedTransmittedMUTFixture

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Network Analyzer Block DiagramRECEIVER / DETECTORREFLECTED(A)INCIDENT (R)SIGNALSEPARATIONSOURCEIncidentReflectedTransmittedMUTFixture

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Network Analyzer Block DiagramRECEIVER / DETECTORREFLECTED(A)TRANSMITTED(B)INCIDENT (R)SIGNALSEPARATIONSOURCEIncidentReflectedTransmittedMUTFixture

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Network Analyzer Block Diagram= S11IncidentReflectedTransmittedIncident= S21

    Agilent Technical ForumFree Space Materials Characterization

  • Transmission Algorithms(85071E also has three reflection algorithms)

    AlgorithmMeasured S-parametersOutput Nicolson-Ross S11,S21,S12,S22er and mr

    Precision (NIST)S11,S21,S12,S22erFastS21,S12er

  • Before a Measurement Can be MadeAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *Calibration is required!

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *TRM CalibrationHard to get broadband absorbers for match

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *TRL CalibrationPrecise positioning fixtures are expensive

    Agilent Technical ForumFree Space Materials Characterization

  • Gated Reflect Line (GRL) CalibrationTwo Tiered ProcessTwo port calibration at waveguide or coax input into antennas removes errors associated with network analyzer and cables.Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *ECal, SOLT or TRL Cal done here

    Agilent Technical ForumFree Space Materials Characterization

  • Gated Reflect Line (GRL) CalibrationTwo Tiered ProcessTwo additional free space calibration standards remove errors from antennas and fixture.Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GRL Cal Error Model (forward only)Coax or Waveguide 2-port Cal corrects errors from end of cable back into the instrument.2-port Cal Terms2-port Cal TermsDMUTMsTrTtMl1S11S22S21S12GRL Error AdapterGRL Error Adapter

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GRL Cal Error Model (forward only)Coax or Waveguide 2-port Cal corrects errors from end of cable back into the instrument.2-port Cal Terms2-port Cal TermsDMUTMsTrTtMl1S11S22S21S12GRL Error AdapterGRL Error Adapter

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GRL Cal Error Model (forward only)Coax or Waveguide 2-port Cal corrects errors from end of cable back into the instrument.2-port Cal Terms2-port Cal TermsDMUTMsTrTtMl1S11S22S21S12GRL Error AdapterGRL Error Adapter

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GRL Cal Error Model (forward only)Coax or Waveguide 2-port Cal corrects errors from end of cable back into the instrument.Errors from Antennas and Fixture can be thought of as being lumped into a GRL error adapter.The GRL error adapter is quantified by measurements of reflect and line standards.2-port Cal Terms2-port Cal TermsDMUTMsTrTtMl1S11S22S21S12GRL Error AdapterGRL Error Adapter

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *Time Domain of Empty Free Space FixtureTransmitting AntennaAirReceiving Antennagate

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GRL Cal Error Model (forward only)Coax or Waveguide 2-port Cal corrects errors from end of cable back into the instrument.Errors from Antennas and Fixture can be thought of as being lumped into a GRL error adapter.The GRL error adapter is quantified by measurements of reflect and line standards.The original 2-port Cal is modified to correct for the error adapter.2-port Cal Terms2-port Cal TermsDMUTMsTrTtMl1S11S22S21S12GRL Error AdapterGRL Error Adapter

    Agilent Technical ForumFree Space Materials Characterization

  • GRL Cal How it worksAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *GRL Cal Error Model (forward only)Coax or Waveguide 2-port Cal corrects errors from end of cable back into the instrument.Errors from Antennas and Fixture can be thought of as being lumped into a GRL error adapter.The GRL error adapter is quantified by measurements of reflect and line standards.The original 2-port Cal is modified to correct for the error adapter.2-port Cal Terms2-port Cal TermsDMUTMsTrTtMl1S11S22S21S12GRL Error AdapterGRL Error Adapter

    Agilent Technical ForumFree Space Materials Characterization

  • Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *Free-space X-Band System

    Agilent Technical ForumFree Space Materials Characterization

  • Free Space 40 60GHz SystemAgilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Bio-dielectrics: Theories, Mechanisms, Applications, Stamford Hall, Leicester, UKA Simple Free Space Powder FixturePowder in Tray Placed Between AntennaeClose Up

  • Free Space 75 110GHz Standard Gain Horn System

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Free Space W-band System

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Free Space 75-110GHz Quasi-Optical System

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Free Space 75-110GHz Quasi-Optical System

    Agilent Technical ForumFree Space Materials Characterization15 October 2008Page *

    Agilent Technical ForumFree Space Materials Characterization

  • Free Space 75-110GHz Quasi-Optical System

    Agi

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