Publication:
Pure dipole radiation via exact solution of Maxwell's equations with spherical source electric current density

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Authors
Garren, David Alan
Subjects
Advisors
Date of Issue
2021-02-21
Date
February 21, 2021
Publisher
Wiley
Language
Abstract
Magnetic loop antennas are valuable for low frequency radar and communications applications, especially for frequencies below 1 MHz. The present paper examines a possible new type of magnetic antenna which is based on a spherical distribution of source electric current. Specifically, this analysis examines a spherically shaped azimuthal electric current density with a magnitude that is proportional to the sine of the spherical elevation angle. A theoretic analytic investigation of the resultant electromagnetic (EM) fields yields an exact closed-form solution of Maxwell's equations which is expressed in terms of a small number of elemental functions. This emanated radiation has a purely dipole structure, with the absence of any higher order multipole contributions. This pure dipole property might offer new applications in radar and communications, provided that suitable physical antenna systems can be fabricated based on the subject theoretical concepts.
Type
Article
Description
17 USC 105 interim-entered record; under review.
The article of record as published may be found at http://dx.doi.org/10.1049/rsn2.12054
Series/Report No
Department
Electrical and Computer Engineering (ECE)
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Identified in text as U.S. Government work.
Format
10 p.
Citation
Garren, David Alan. "Pure dipole radiation via exact solution of Maxwell's equations with spherical source electric current density." IET Radar, Sonar & Navigation 15.5 (2021): 523-532.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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