Work

Reusing Submatrix Calculations in Array Decomposition Method for Finite Arrays with Electrically Connected Elements

Year: 2025

Type: conference-paper

Abstract: The finite partial translation symmetry apparent in array antennas can be exploited for effective calculation of the Method of Moments (MoM) impedance matrix.With a geometrical array decomposition built on nine subdomain components, the obtained MoM impedance matrix inherits a partial block Toeplitz structure, which enables fast calculation time and reduces memory allocation.In this paper, we further improve the calculation time by reusing already calculated submatrices of the MoM impedance matrix.By identifying corresponding elements between the nine components, already calculated submatrices can be extracted to create submatrices previously deemed as necessary to calculate.The reusing strategy reduces the number of submatrix calculations to perform from O(N x N y ) to O(N x + N y ), of a part of the impedance matrix, for an N x × N y array.

Source: URSI International Symposium on Electromagnetic Theory

DOI: 10.46620/ursiemts25/hskb3856

Authors: Lucas Åkerstedt, Lars Jonsson, Harald Hultin

Institutions: KTH Royal Institute of Technology, Saab (Sweden)

Language: English

Topic: Electromagnetic Scattering and Analysis

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Stiftelsen för Strategisk Forskning, Svenska Forskningsrådet Formas, Vetenskapsrådet, Energimyndigheten

Awards: G4360675731, Giardia- a eukaryotic model pathobiont., Interoperabilitet mellan antenner på stora plattformar, Sustainable and Energy Efficient 6G Integrated Antennas (SEE-6GIA)