TY - JOUR
T1 - Mixtures of Multipoles - Should They Be in Your EM Toolbox?
AU - Ziolkowski, Richard W.
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2022
Y1 - 2022
N2 - Multipole expansions are an essential analysis tool in the foundations of the descriptions of the electromagnetic fields radiated by electric and magnetic sources. Nevertheless, practical antenna systems generally rely on them as an academic explanation, not as a fundamental building block. An overview of the recent surge in interest in multipole sources and their fields to achieve useful radiated and scattered fields with, for example, high directivities in preferred directions is given. Topics include Huygens sources, dielectric-based Mie-tronics, edge-singularity multipoles, and exotic metamaterial-inspired superdirective lenses and radiators. While there has been a never-ending stream of physics publications, little has happened in the engineering electromagnetics community. I will try to answer the title with examples that may stimulate interest in the field.
AB - Multipole expansions are an essential analysis tool in the foundations of the descriptions of the electromagnetic fields radiated by electric and magnetic sources. Nevertheless, practical antenna systems generally rely on them as an academic explanation, not as a fundamental building block. An overview of the recent surge in interest in multipole sources and their fields to achieve useful radiated and scattered fields with, for example, high directivities in preferred directions is given. Topics include Huygens sources, dielectric-based Mie-tronics, edge-singularity multipoles, and exotic metamaterial-inspired superdirective lenses and radiators. While there has been a never-ending stream of physics publications, little has happened in the engineering electromagnetics community. I will try to answer the title with examples that may stimulate interest in the field.
KW - Antenna theory
KW - Antennas
KW - Directive antennas
KW - Electromagnetic fields
KW - Electromagnetics
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U2 - 10.1109/OJAP.2021.3138005
DO - 10.1109/OJAP.2021.3138005
M3 - Article
AN - SCOPUS:85122104042
SN - 2637-6431
VL - 3
SP - 154
EP - 188
JO - IEEE Open Journal of Antennas and Propagation
JF - IEEE Open Journal of Antennas and Propagation
ER -