Details
| Original language | English |
|---|---|
| Pages (from-to) | 986 - 997 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 73 |
| Issue number | 2 |
| Early online date | 17 Dec 2024 |
| Publication status | Published - Feb 2025 |
Abstract
The synthesis of antenna arrays in the presence of mutual coupling using generalized scattering matrices in terms of characteristic modes (CMs) is proposed. For the synthesis, the array is built of synthetic elements that are described by their modal scattering and radiation behavior. In particular, the question of how to describe the degrees of freedom of such elements is addressed. The eigenvalues of the CMs of the element geometry and the modal radiation behavior of the antenna are thereby selected as degrees of freedom for the model of synthetic elements. Using this model and a modal coupling matrix, an approach to optimize the modal configuration of the elements within an array is proposed. Finally, a close to reality example shows how the proposed theory can be used to enhance the cross-polarization rejection of a circularly polarized patch antenna array with a fixed beam.
Keywords
- characteristic mode analysis, Finite antenna arrays, generalized scattering matrices, modal coupling, Characteristic mode (CM) analysis, finite antenna arrays
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Antennas and Propagation, Vol. 73, No. 2, 02.2025, p. 986 - 997.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Array Synthesis in Terms of Characteristic Modes and Generalized Scattering Matrices
AU - Mörlein, Leonardo
AU - Manteuffel, Dirk
N1 - Publisher Copyright: © 2024 IEEE.
PY - 2025/2
Y1 - 2025/2
N2 - The synthesis of antenna arrays in the presence of mutual coupling using generalized scattering matrices in terms of characteristic modes (CMs) is proposed. For the synthesis, the array is built of synthetic elements that are described by their modal scattering and radiation behavior. In particular, the question of how to describe the degrees of freedom of such elements is addressed. The eigenvalues of the CMs of the element geometry and the modal radiation behavior of the antenna are thereby selected as degrees of freedom for the model of synthetic elements. Using this model and a modal coupling matrix, an approach to optimize the modal configuration of the elements within an array is proposed. Finally, a close to reality example shows how the proposed theory can be used to enhance the cross-polarization rejection of a circularly polarized patch antenna array with a fixed beam.
AB - The synthesis of antenna arrays in the presence of mutual coupling using generalized scattering matrices in terms of characteristic modes (CMs) is proposed. For the synthesis, the array is built of synthetic elements that are described by their modal scattering and radiation behavior. In particular, the question of how to describe the degrees of freedom of such elements is addressed. The eigenvalues of the CMs of the element geometry and the modal radiation behavior of the antenna are thereby selected as degrees of freedom for the model of synthetic elements. Using this model and a modal coupling matrix, an approach to optimize the modal configuration of the elements within an array is proposed. Finally, a close to reality example shows how the proposed theory can be used to enhance the cross-polarization rejection of a circularly polarized patch antenna array with a fixed beam.
KW - characteristic mode analysis
KW - Finite antenna arrays
KW - generalized scattering matrices
KW - modal coupling
KW - Characteristic mode (CM) analysis
KW - finite antenna arrays
UR - http://www.scopus.com/inward/record.url?scp=85208721885&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2403.02046
DO - 10.48550/arXiv.2403.02046
M3 - Article
AN - SCOPUS:85208721885
VL - 73
SP - 986
EP - 997
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 2
ER -