Extended Higher-Order Array Decomposition Method for Fully Populated or Thinned Array Antennas and Scatterers With Connected Elements
- Resource Type
- Periodical
- Authors
- Brandt-Moller, M.; Mattes, M.; Breinbjerg, O.; Zhou, M.; Jorgensen, E.
- Source
- IEEE Transactions on Antennas and Propagation IEEE Trans. Antennas Propagat. Antennas and Propagation, IEEE Transactions on. 72(5):4454-4464 May, 2024
- Subject
- Fields, Waves and Electromagnetics
Aerospace
Transportation
Components, Circuits, Devices and Systems
Antenna arrays
Finite element analysis
Method of moments
Lattices
Integral equations
Memory management
Matrix decomposition
Connected array elements
discontinuous Galerkin method (DGM) of moments
higher-order (HO) basis functions (BFs)
multilevel block-Toeplitz (MBT)
thinned array antennas
- Language
- ISSN
- 0018-926X
1558-2221
The Higher-Order Array Decomposition Method (HO-ADM) is extended to handle fully populated or thinned finite array antennas and scatterers which can be modeled as arrays with connected elements lying on a regular lattice. The discontinuous Galerkin method (DGM) is employed to retain the multilevel block-Toeplitz (MBT) method of moments (MoMs) matrix structure even for connected elements. Moreover, by zeroing a selected subset of unknowns in the iterative solution process, thinned arrays can be handled as well. The presented method yields more than an order of magnitude shorter solution times for both a $32\times32$ -element square- and a 793-element circular-thinned array with a memory consumption comparable to existing fast methods such as the multilevel fast multipole method (MLFMM).