ModernAntennas,2nd-2005

ModernAntennas,2nd-2005
ContentsListofcontributorsxviForewordxviiAcknowledgementsxxElectromagnetismandantennas–ahistoricalperspective11Fundamentalsofelectromagnetism71.1Maxwell’sequations71.1.1Maxwell’sequationsinanarbitrarymedium71.1.2Linearmedia101.1.3Conductingmedia121.1.4Reciprocitytheorem141.2Powerandenergy151.2.1Powervolumedensities151.2.2Energyvolumedensities161.2.3Poyntingvectorandpower171.3Planewavesinlinearmedia181.3.1Planewavesinanisotropiclinearmedium181.3.2Skineffect24Furtherreading26Exercises272Radiation312.1Planewavespectrum322.1.1Spectraldomain322.1.2Electromagneticfieldinasemi-infinitespacewithnosources342.1.3Thefarfield392.2Kirchhoff’sformulation442.2.1Green’sidentityandGreen’sfunctions442.2.2Kirchhoff’sintegralformulation462.2.3PlanewavespectrumandKirchhoff’sformulation48Furtherreading49Exercises503Antennasintransmission533.1Farfieldradiation543.1.1Vectorcharacteristicoftheradiationfromtheantenna543.1.2Translationtheorem553.1.3Application:radiationproducedbyanarbitrarycurrent553.1.4Radiatedpower583.2Fieldradiatedfromanantenna593.2.1Elementarydipoles593.2.2Plane-apertureradiation623.3Directivity,gain,radiationpattern663.3.1Radiatedpower663.3.2Directivity673.3.3Gain683.3.4Radiationpattern703.3.5Inputimpedance72Furtherreading73Exercises744Receivingantennas794.1Antennareciprocitytheorem794.1.1Reciprocitytheoremappliedtoasource-freeclosedsurface794.1.2Relationbetweenthefieldontransmitandthefieldonreceive834.2Antennaeffectivereceivingarea844.2.1Definition844.2.2Relationshipbetweengainandeffectivereceivingarea854.3Energytransmissionbetweentwoantennas864.3.1TheFriistransmissionformula864.3.2Radarequation874.3.3AntennaRadarCrossSection(RCS)894.4Antennabehaviourinthepresenceof 本软件ID:2360085