TY - GEN
T1 - On the Generation of Distributed Spherical Harmonics Expansions for Inverse Source Solutions
AU - Eibert, T. F.
AU - Ostrzyharczik, D.
AU - Kornprobst, J.
AU - Knapp, J.
N1 - Publisher Copyright:
© 2023 European Association for Antennas and Propagation.
PY - 2023
Y1 - 2023
N2 - Distributed spherical harmonics expansions are a powerful approach for the efficient solution of inverse source problems. They allow for a relatively accurate representation of the geometric support of the source distribution without the overhead of handling a mesh and mesh-specific basis functions representing the commonly utilized surface current densities. Standard spherical harmonics expansions distributed over a Huygens surface around the source domain are, however, redundant. Therefore, we discuss ways towards the reduction of this redundancy, where we are in particular interested in the construction of spherical harmonics with predominant radiation into the actual solution domain. Several sets of such spherical harmonics are presented and their utilization with measured and synthetic near-field data is demonstrated.
AB - Distributed spherical harmonics expansions are a powerful approach for the efficient solution of inverse source problems. They allow for a relatively accurate representation of the geometric support of the source distribution without the overhead of handling a mesh and mesh-specific basis functions representing the commonly utilized surface current densities. Standard spherical harmonics expansions distributed over a Huygens surface around the source domain are, however, redundant. Therefore, we discuss ways towards the reduction of this redundancy, where we are in particular interested in the construction of spherical harmonics with predominant radiation into the actual solution domain. Several sets of such spherical harmonics are presented and their utilization with measured and synthetic near-field data is demonstrated.
KW - antenna measurements
KW - directive sources
KW - inverse problems
KW - spherical mode expansion
UR - http://www.scopus.com/inward/record.url?scp=85162228181&partnerID=8YFLogxK
U2 - 10.23919/EuCAP57121.2023.10133669
DO - 10.23919/EuCAP57121.2023.10133669
M3 - Conference contribution
AN - SCOPUS:85162228181
T3 - 17th European Conference on Antennas and Propagation, EuCAP 2023
BT - 17th European Conference on Antennas and Propagation, EuCAP 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th European Conference on Antennas and Propagation, EuCAP 2023
Y2 - 26 March 2023 through 31 March 2023
ER -