LEADER 03918nam  22006255  450 
001 9910805570503321
005 20240116114141.0
010   $a981-9994-49-7
024 7 $a10.1007/978-981-99-9449-6
035   $a(MiAaPQ)EBC31072111
035   $a(Au-PeEL)EBL31072111
035   $a(DE-He213)978-981-99-9449-6
035   $a(EXLCZ)9929958398700041
100   $a20240116d2024      u|             0
101 0 $aeng
135   $aurcnu||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aElectromagnetic Sources and Electromagnetic Fields$b[electronic resource] /$fby Gaobiao Xiao
205   $a1st ed. 2024.
210  1$aSingapore :$cSpringer Nature Singapore :$cImprint: Springer,$d2024.
215   $a1 online resource (347 pages)
225 1 $aModern Antenna,$x2731-7994
311 08$aPrint version: Xiao, Gaobiao Electromagnetic Sources and Electromagnetic Fields Singapore : Springer Singapore Pte. Limited,c2024 9789819994489 
327   $aElectromagnetic Sources and Electromagnetic Fields -- Q Factor of a Radiator -- Non-Relativistic Radiation of a Moving Charge -- Spherical Harmonic Expansion -- Nonuniform Transmission Line Model -- Pulse Radiator in Free Space -- Synthesis of Far Field Patterns -- Electromagnetic Inverse Source Problems.
330   $aThis book presents a modified spherical harmonic expansion method in which the electromagnetic fields and their sources are expanded with the same set of spherical vector basis functions in a similar procedure. Explicit expressions for the electromagnetic fields, potentials, energies, and the related Green?s functions are derived for the spherical modes in both frequency domain and time domain. Based on the formulation, the relationships between the electromagnetic sources, the electromagnetic far fields, and the electromagnetic near fields are clearly revealed. In particular, a nonuniform transmission line model is developed for intuitively characterizing the total radiation process. The introduction of the cutoff radius and the cutoff mode degree provides a simple reference for determining the numbers of degrees of freedom of the fields associated with sources in a bounded region. Based on the theory, an efficient hybrid method for synthesizing antenna arrays with complex footprints is proposed and demonstrated with several numerical examples. Effective algorithms are also developed for reconstructing the radiating part of the current sources. This book is intended for researchers, engineers, and graduate students who are interested in studying the energy transfer in electromagnetic radiation, synthesis and measurement of antenna arrays, and applications of inverse electromagnetic source problems. .
410  0$aModern Antenna,$x2731-7994
606   $aTelecommunication
606   $aElectrical engineering
606   $aMathematical physics
606   $aComputer simulation
606   $aComputer science
606   $aMicrowaves, RF Engineering and Optical Communications
606   $aElectrical and Electronic Engineering
606   $aComputational Physics and Simulations
606   $aTheory and Algorithms for Application Domains
615  0$aTelecommunication.
615  0$aElectrical engineering.
615  0$aMathematical physics.
615  0$aComputer simulation.
615  0$aComputer science.
615 14$aMicrowaves, RF Engineering and Optical Communications.
615 24$aElectrical and Electronic Engineering.
615 24$aComputational Physics and Simulations.
615 24$aTheory and Algorithms for Application Domains.
676   $a621.3
700   $aXiao$b Gaobiao$01588936
801  0$bMiAaPQ
801  1$bMiAaPQ
801  2$bMiAaPQ
906   $aBOOK
912   $a9910805570503321
996   $aElectromagnetic Sources and Electromagnetic Fields$93883203
997   $aUNINA