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Industrial Microwave Sensors : Microwave Library - Ebbe G. Nyfors

Industrial Microwave Sensors

Microwave Library

Hardcover Published: 19th December 1989
ISBN: 9780890063972
Number Of Pages: 364

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Textbook designed for an advanced undergraduate course in industrial applications of microwaves. Provides knowledge about the possibilities of the microwave technique in implementing practical measurement sensors. Knowledge of the fundamentals of physics and electronics is assumed. Annotation copyri

Prefacep. xi
Microwave Sensorsp. 1
Introductionp. 1
The Electromagnetic Spectrump. 3
Propagation of Electromagnetic Wavesp. 4
Maxwell's Equations and the Wave Equationp. 4
Plane Waves and Complex Number Notationp. 6
Propagation of Microwavesp. 9
Guiding of Microwaves and Boundary Conditions for Conducting Surfacesp. 10
Radiation and Antennasp. 16
Interaction of Electromagnetic Waves with Matterp. 20
Propagation Factor in Dielectric Mediump. 20
Refraction and Reflectionp. 23
Microwave Sensorsp. 28
How Microwave Sensors Workp. 28
The Measurement Systemp. 35
How to Choose the Type of Sensorp. 36
Interference (RFI or EMI) and Safetyp. 36
Advantages and Disadvantages of Microwave Sensorsp. 38
Dielectric Properties of Materialsp. 41
Introductionp. 41
Polarization Phenomena in Matterp. 41
Relative Permittivity [epsiv][subscript r] and Boundary Conditionsp. 41
Polarization in Dense Materialsp. 47
Typical Frequency Dependence of [epsiv][subscript r] in Solids and Liquidsp. 48
Electronic Polarizationp. 49
Atomic Polarizationp. 51
Orientation Polarization in Gasesp. 52
Orientation Polarization in Liquids and Solids, the Debye Relationp. 55
Ion Conductivity and the Maxwell-Wagner Effectp. 58
Waterp. 62
The Water Moleculep. 62
Liquid Waterp. 63
Water Vaporp. 66
Bound Waterp. 66
Icep. 68
Mixing Formulas and Structure Dependence of Permittivityp. 69
Generalp. 69
Structure-Independent Formulasp. 70
Structure-Dependent Formulasp. 70
Multiparameter Measurementp. 79
The Measurement Situationp. 79
The Number of Measurementsp. 80
Auxiliary Measurementsp. 81
Microwave-Multiparameter Measurementp. 82
Short Cutsp. 86
Examples and Referencesp. 87
Humid Airp. 87
Moist Woodp. 90
Short Summary and Referencesp. 92
Permittivity Measurements in the Laboratoryp. 93
Introductionp. 93
Permittivity Measurement Techniquesp. 94
Measurement of Different Materialsp. 108
Examplesp. 111
Resonator Sensorsp. 127
Introductionp. 127
The Resonance Phenomenonp. 127
Microwave Resonatorsp. 130
Theoryp. 133
Resonator Filled with Dielectricp. 133
Partially Filled Resonator, Perturbation Formulasp. 141
Resonator Structuresp. 145
Coupling Devicesp. 145
Hollow Cavity Resonatorp. 150
Coaxial and Helical Resonatorsp. 154
Strip Resonatorsp. 155
Two-Conductor Line Resonatorp. 160
Slotline Resonatorp. 161
Open Quasioptical Resonatorp. 162
Dielectric, Ferromagnetic, and Other Resonatorsp. 163
Measurement of Resonant Frequency and Quality Factorp. 164
Introductionp. 164
The Basic Measurementsp. 164
Different Resonance Measurement Techniquesp. 170
Practical Aspectsp. 184
Examples of Reported Applications of Resonatorsp. 186
Hollow Cavitiesp. 186
Coaxial and Helical Resonatorsp. 191
Strip Resonatorsp. 193
Two-Conductor Line and Slotline Resonatorsp. 194
Open Quasioptical Resonatorsp. 196
Dielectric and Ferromagnetic Resonatorsp. 196
Transmission Sensorsp. 201
Introductionp. 201
Free-Space Transmission Sensorsp. 202
Sensor Structuresp. 202
Theoryp. 202
Practical Considerationsp. 211
Guided Wave Transmission Sensorsp. 213
Introductionp. 213
Sensor Structuresp. 213
Measurement Equipment for Transmission Sensorsp. 214
Introductionp. 214
Measurement Techniquesp. 216
Practical Aspectsp. 221
Applications of Transmission Sensorsp. 222
Free-Space Systemsp. 222
Guided Wave Systemsp. 225
Special and Hybrid Sensorsp. 231
Introductionp. 231
Selected Examplesp. 231
Measurement of Thickness and Permittivity of a Dielectric Layer on a Conducting Plane Using Surface Wavesp. 231
Detection of Knots in Sawed Timberp. 234
Strength Grading of Timber by Combining Several Measurement Methodsp. 234
Detection of Fatigue Cracks Based on Third-Order Nonlinearitiesp. 238
Gas Analysis by Microwave Spectrometryp. 238
Automatic Moisture Meter Based on Microwave Dryingp. 239
Laboratory Meter for Fast and Simultaneous Determination of Permittivity and Densityp. 241
Reflection and Radar Sensorsp. 245
Introductionp. 245
Reflection Sensorsp. 245
Open-Ended Transmission Line Sensorsp. 245
Shielded and Other Transmission Line Sensorsp. 252
Free-Space Sensorsp. 252
Radar Sensorsp. 255
Introductionp. 255
Basic Principles of Operationp. 255
Applications of Radar Sensorsp. 259
Radiometer Sensorsp. 267
Introductionp. 267
Basics of Radiometryp. 267
Black-Body Radiationp. 267
Brightness Temperaturep. 269
Antenna Temperaturep. 270
Radiometerp. 272
Receiver Noise Temperature and Sensitivityp. 274
Subsurface Radiometry and Thermographyp. 276
Equation of Radiation Transferp. 276
Visibilityp. 276
Contacting Antennasp. 279
Correlation Radiometerp. 279
Aperture Synthesis Thermographyp. 283
Multifrequency Radiometryp. 285
Applications of Radiometer Sensorsp. 286
Medicinep. 286
Industrial Applicationsp. 287
Remote Sensingp. 287
Active Imagingp. 291
Introductionp. 291
Holographyp. 291
True Holographyp. 291
Quasiholographyp. 294
Two-Dimensional Imaging of a Half-Spacep. 300
Imaging of a Rotating Samplep. 302
Applications of Microwave Holographic Imagingp. 303
Tomographyp. 304
Introductionp. 304
General Principlesp. 304
Medical Applications of Diffraction Tomographyp. 305
Appendicesp. 309
Transmission Linesp. 309
Basic Equationsp. 309
TEM Linesp. 310
Waveguidesp. 311
Resonant Cavitiesp. 313
Rectangular Cavitiesp. 313
Circular Cavitiesp. 314
Bessel Functionsp. 316
Vector Relationsp. 318
Basic Relationsp. 318
Differential del Operatorp. 319
Vector Identitiesp. 320
Signal Flow Graphsp. 321
Basic Elementsp. 321
Reduction of Flow Graphsp. 321
Example: Measurement of Reflection Response of a Resonatorp. 322
List of Symbolsp. 327
Indexp. 339
Table of Contents provided by Syndetics. All Rights Reserved.

ISBN: 9780890063972
ISBN-10: 0890063974
Series: Microwave Library
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 364
Published: 19th December 1989
Publisher: Artech House Publishers
Country of Publication: US
Dimensions (cm): 22.9 x 15.2  x 2.3
Weight (kg): 0.7