Materials Measurement Phil Bartley Shelley Begley

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<strong>Measurement</strong> Results0.03Imaginary part of EpsilonRexolite measured with 110Ghz PNA and GRL Cale"0.0250.020.0150.010.00507.500E+10 8.000E+10 8.500E+10 9.000E+10 9.500E+10 1.000E+11 1.050E+11 1.100E+11-0.005-0.01-0.015-0.02frequency (hz)Std Gain Horn QO table74
NRL (Naval Research Lab) ArchTo Port 1 ofnetworkanalyzerTo Port 2 ofnetworkanalyzerαMeasure s 21 with the network analyzerNRL arch is used usually to measure absorbingmaterials. For absorbers is desired to know thefrequency response of reflectivity at a given angle.Another free-space measurement of interest is reflectivity. It is often desiredto know the reflectivity at a given angle. The material of interest may be anabsorber as illustrated of a material intended to be applied to a metalsurface.Reflectivity measurements are often performed on a NRL (Naval ResearchLaboratory) Arch. The arch allows the user to adjust the angle of theantennas being used while maintaining a constant distance to the sample.The material being measured is placed on the table. Prior to making ameasurement the system is calibrated. The most commonly used calibrationis an isolation-response cal. Time-domain gates are often employed toeliminate unwanted transmission paths.75
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Extremely Diverse Applications“Ma
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Maxwell’s Equations∇× E=−∂
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Permittivity and Permeability Defin
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Definition of Dielectric Constant o
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Dielectric MechanismsIonic Polariza
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Consider Dipole RotationRandom Orie
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Electric Field Changed DirectionEDi
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Small and Large MoleculesMany mater
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ε rε' '',r6040Debye Relaxation fo
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Cole-Cole Plot Explanation"ε r3020
Page 24 and 25: Other Empirical ModelsταβOnly fe
Page 26 and 27: Dielectric Properties (at 3 GHz)100
Page 28 and 29: Which Technique is Best? Frequency
Page 30 and 31: Impedance Analyzers and FixturesHer
Page 32 and 33: Measurement Techniques that use a V
Page 34 and 35: Transmission LineMaterial assumptio
Page 36 and 37: Transmission Algorithms in 85071EOp
Page 38 and 39: Problems with N-R Model• This set
Page 40 and 41: NIST Model• Technique uses all fo
Page 42 and 43: Transmission (Fast) Model• This t
Page 44 and 45: Weakness of both the NIST and Trans
Page 46 and 47: Transmission Line Measurement Error
Page 48 and 49: Typical Errors Caused By Air GapsPe
Page 50 and 51: Transmission Line Technique Summary
Page 52 and 53: Non-Contacting method for High or L
Page 54 and 55: 40 - 60GHz Free Space System54
Page 56 and 57: Free Space W-band SystemHere is a p
Page 58 and 59: Free Space Quasi-Optical SystemHere
Page 60 and 61: Before a Measurement Can be Made…
Page 62 and 63: TRL CalibrationThruReflectMove the
Page 64 and 65: Gated Reflect Line (GRL) Calibratio
Page 66 and 67: MUT and GRL Error AdaptersAfter 2-P
Page 68 and 69: MUT and GRL Error AdaptersAfter O11
Page 70 and 71: GRL Thru Standard (Air)A 11 =A 22 =
Page 72 and 73: QO System SchematicAdditional infor
Page 76 and 77: Measurement with NRL Arch andoption
Page 78: Free Space LabWith u-band calibrati
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Materials Measurement Phil Bartley Shelley Begley

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