Table Of ContentELECTROMAGNETIC
WAVE PROPAGATION,
RADIATION, AND
SCATTERING
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ELECTROMAGNETIC
WAVE PROPAGATION,
RADIATION, AND
SCATTERING
From Fundamentals to Applications
Second Edition
AKIRA ISHIMARU
UniversityofWashington,Seattle,WA,USA
IEEE Antennas and Propagation Society, Sponsor
TheIEEEPressSeriesonElectromagneticWaveTheory
AndreasC.Cangellaris,SeriesEditor
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ISBN:978-1-118-09881-3
PrintedintheUnitedStatesofAmerica.
10 9 8 7 6 5 4 3 2 1
To
YUKO
and
Emily,Ben,Joyce,Gene,Aaron,Eric,Andrew,Karen,Jim,
Grace,Patty,Chad,Katie,Will,Jane,Chuck,John
CONTENTS
ABOUT THE AUTHOR xix
PREFACE xxi
PREFACE TO THE FIRST EDITION xxv
ACKNOWLEDGMENTS xxvii
PARTI FUNDAMENTALS 1
1 INTRODUCTION 3
2 FUNDAMENTALFIELDEQUATIONS 7
2.1 Maxwell’sEquations / 7
2.2 Time-HarmonicCase / 10
2.3 ConstitutiveRelations / 11
2.4 BoundaryConditions / 15
2.5 EnergyRelationsandPoynting’sTheorem / 18
2.6 VectorandScalarPotentials / 22
2.7 ElectricHertzVector / 24
2.8 DualityPrincipleandSymmetryofMaxwell’sEquations / 25
2.9 MagneticHertzVector / 26
2.10 UniquenessTheorem / 27
vii
viii CONTENTS
2.11 ReciprocityTheorem / 28
2.12 AcousticWaves / 30
Problems / 33
3 WAVESININHOMOGENEOUSANDLAYEREDMEDIA 35
3.1 WaveEquationforaTime-HarmonicCase / 35
3.2 Time-HarmonicPlane-WavePropagationinHomogeneous
Media / 36
3.3 Polarization / 37
3.4 Plane-WaveIncidenceonaPlaneBoundary:Perpendicular
Polarization(sPolarization) / 39
3.5 ElectricFieldParalleltoaPlaneofIncidence:Parallel
Polarization(pPolarization) / 43
3.6 FresnelFormula,Brewster’sAngle,andTotalReflection / 44
3.7 WavesinLayeredMedia / 47
3.8 AcousticReflectionandTransmissionfromaBoundary / 50
3.9 ComplexWaves / 51
3.10 TrappedSurfaceWave(SlowWave)andLeakyWave / 54
3.11 SurfaceWavesAlongaDielectricSlab / 57
3.12 ZenneckWavesandPlasmons / 63
3.13 WavesinInhomogeneousMedia / 66
3.14 WKBMethod / 68
3.15 BremmerSeries / 72
3.16 WKBSolutionfortheTurningPoint / 76
3.17 TrappedSurface-WaveModesinanInhomogeneousSlab / 77
3.18 MediumWithPrescribedProfile / 80
Problems / 81
4 WAVEGUIDESANDCAVITIES 85
4.1 UniformElectromagneticWaveguides / 85
4.2 TMModesorEModes / 86
4.3 TEModesorHModes / 87
4.4 EigenfunctionsandEigenvalues / 89
4.5 GeneralPropertiesofEigenfunctionsforClosedRegions / 91
4.6 k–βDiagramandPhaseandGroupVelocities / 95
4.7 RectangularWaveguides / 98
4.8 CylindricalWaveguides / 100
4.9 TEMModes / 104
CONTENTS ix
4.10 DispersionofaPulseinaWaveguide / 106
4.11 Step-IndexOpticalFibers / 109
4.12 DispersionofGraded-IndexFibers / 116
4.13 RadialandAzimuthalWaveguides / 117
4.14 CavityResonators / 120
4.15 WavesinSphericalStructures / 123
4.16 SphericalWaveguidesandCavities / 128
Problems / 133
5 GREEN’SFUNCTIONS 137
5.1 ElectricandMagneticDipolesinHomogeneousMedia / 137
5.2 ElectromagneticFieldsExcitedbyanElectricDipoleina
HomogeneousMedium / 139
5.3 ElectromagneticFieldsExcitedbyaMagneticDipoleina
HomogeneousMedium / 144
5.4 ScalarGreen’sFunctionforClosedRegionsandExpansionof
Green’sFunctioninaSeriesofEigenfunctions / 145
5.5 Green’sFunctioninTermsofSolutionsoftheHomogeneous
Equation / 150
5.6 FourierTransformMethod / 155
5.7 ExcitationofaRectangularWaveguide / 157
5.8 ExcitationofaConductingCylinder / 159
5.9 ExcitationofaConductingSphere / 163
Problems / 166
6 RADIATIONFROMAPERTURESANDBEAMWAVES 169
6.1 Huygens’PrincipleandExtinctionTheorem / 169
6.2 FieldsDuetotheSurfaceFieldDistribution / 173
6.3 KirchhoffApproximation / 176
6.4 FresnelandFraunhoferDiffraction / 178
6.5 FourierTransform(Spectral)Representation / 182
6.6 BeamWaves / 183
6.7 Goos–HanchenEffect / 187
6.8 Higher-OrderBeam-WaveModes / 191
6.9 VectorGreen’sTheorem,Stratton–ChuFormula,andFranz
Formula / 194
6.10 EquivalenceTheorem / 197
6.11 KirchhoffApproximationforElectromagneticWaves / 198
Problems / 199
x CONTENTS
7 PERIODICSTRUCTURESANDCOUPLED-MODETHEORY 201
7.1 Floquet’sTheorem / 202
7.2 GuidedWavesAlongPeriodicStructures / 203
7.3 PeriodicLayers / 209
7.4 PlaneWaveIncidenceonaPeriodicStructure / 213
7.5 ScatteringfromPeriodicSurfacesBasedontheRayleigh
Hypothesis / 219
7.6 Coupled-ModeTheory / 224
Problems / 229
8 DISPERSIONANDANISOTROPICMEDIA 233
8.1 DielectricMaterialandPolarizability / 233
8.2 DispersionofDielectricMaterial / 235
8.3 DispersionofConductorandIsotropicPlasma / 237
8.4 DebyeRelaxationEquationandDielectricConstant
ofWater / 240
8.5 InterfacialPolarization / 240
8.6 MixingFormula / 241
8.7 DielectricConstantandPermeabilityforAnisotropic
Media / 244
8.8 MagnetoionicTheoryforAnisotropicPlasma / 244
8.9 Plane-WavePropagationinAnisotropicMedia / 247
8.10 Plane-WavePropagationinMagnetoplasma / 248
8.11 PropagationAlongtheDCMagneticField / 249
8.12 FaradayRotation / 253
8.13 PropagationPerpendiculartotheDCMagneticField / 255
8.14 TheHeightoftheIonosphere / 256
8.15 GroupVelocityinAnisotropicMedium / 257
8.16 WarmPlasma / 259
8.17 WaveEquationsforWarmPlasma / 261
8.18 FerriteandtheDerivationofItsPermeabilityTensor / 263
8.19 Plane-WavePropagationinFerrite / 266
8.20 MicrowaveDevicesUsingFerrites / 267
8.21 LorentzReciprocityTheoremforAnisotropicMedia / 270
8.22 Bi-AnisotropicMediaandChiralMedia / 272
8.23 Superconductors,LondonEquation,andtheMeissner
Effects / 276
8.24 Two-FluidModelofSuperconductorsatHighFrequencies / 278
Problems / 280
Description:One of the most methodical treatments of electromagnetic wave propagation, radiation, and scattering—including new applications and ideas Presented in two parts, this book takes an analytical approach on the subject and emphasizes new ideas and applications used today. Part one covers fundamentals