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Electromagnetic Sources and Electromagnetic Fields (Modern Antenna) free ebook download

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Author(s):	Gaobiao Xiao

Date:	2024	Format:	pdf	Language:	English	ISBN/ASIN:	9819994489
Pages:	350	OCR:		Quality:		ISBN13:
Uploader:	stirkout	Upload Date:	2/29/2024 11:21:29 AM

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9819994489 pdf
This 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 Greens 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.

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Tags: Antenna Electromagnetic Electromagnetic Fields Modern Sources

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Electromagnetic Sources and Electromagnetic Fields (Modern Antenna) free ebook download

Category: Other Engineering

Description: Click to see full description

Category:
Other Engineering