Details
| Original language | English |
|---|---|
| Pages (from-to) | 7146-7157 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 71 |
| Issue number | 9 |
| Early online date | 10 Jul 2023 |
| Publication status | Published - 6 Sept 2023 |
Abstract
Keywords
- Characteristic modes (CMs), direction finding (DF) antennas, direction of arrival (DoA), multiport antennas
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Antennas and Propagation, Vol. 71, No. 9, 06.09.2023, p. 7146-7157.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Evaluation Method and Design Guidance for Direction-Finding Antenna Systems
AU - Grundmann, Lukas
AU - Manteuffel, Dirk
N1 - Funding Information: This work was supported by the German Federal Ministry for Economic Affairs and Climate Action within the Luftfahrtforschungsprogramm (LuFo) through Project Master360 under Grant 20D1905C.
PY - 2023/9/6
Y1 - 2023/9/6
N2 - A deterministic evaluation procedure for multiport direction-finding (DF) antennas is proposed. It is based on a DF uncertainty parameter, which describes how well different directions of arrival and polarizations are distinguishable. By investigating a simple antenna array, it is shown that the proposed parameter provides additional insights into the behavior of an antenna system when compared to established methods. Moreover, since the uncertainty parameter is calculated from a set of far fields, it is applicable to port far fields as well as Characteristic Modes (CMs). This finding is utilized to derive design guidance: starting with a set of CM far fields, the angular distribution of the uncertainty is investigated to verify that no ambiguities are present. Different sets of far fields are compared, and the differences regarding their DF behavior are visualized and explained using the uncertainty in conjunction with an estimate of the incident field. To quantify these differences, a key performance indicator (KPI) is introduced that summarizes the DF capabilities over a selected angular region. To demonstrate the design process, a multimode multiport antenna (M3PA) with three uncorrelated ports is developed, manufactured, and measured.
AB - A deterministic evaluation procedure for multiport direction-finding (DF) antennas is proposed. It is based on a DF uncertainty parameter, which describes how well different directions of arrival and polarizations are distinguishable. By investigating a simple antenna array, it is shown that the proposed parameter provides additional insights into the behavior of an antenna system when compared to established methods. Moreover, since the uncertainty parameter is calculated from a set of far fields, it is applicable to port far fields as well as Characteristic Modes (CMs). This finding is utilized to derive design guidance: starting with a set of CM far fields, the angular distribution of the uncertainty is investigated to verify that no ambiguities are present. Different sets of far fields are compared, and the differences regarding their DF behavior are visualized and explained using the uncertainty in conjunction with an estimate of the incident field. To quantify these differences, a key performance indicator (KPI) is introduced that summarizes the DF capabilities over a selected angular region. To demonstrate the design process, a multimode multiport antenna (M3PA) with three uncorrelated ports is developed, manufactured, and measured.
KW - Characteristic modes (CMs)
KW - direction finding (DF) antennas
KW - direction of arrival (DoA)
KW - multiport antennas
UR - http://www.scopus.com/inward/record.url?scp=85164703324&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2303.01317
DO - 10.48550/arXiv.2303.01317
M3 - Article
VL - 71
SP - 7146
EP - 7157
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 9
ER -