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Gabler, Bernd and Schreiber, Alicja (2023) Excitation Coefficient Determination for an Antenna Elevation Network Using Installed Performance Radiation Measurements. In: 17th European Conference on Antennas and Propagation, EuCAP 2023. Institute of Electrical and Electronics Engineers (IEEE). European Conference on Antennas and Propagation (EuCAP), 2023-03-27 - 2023-03-31, Florence, Italy. doi: 10.23919/EuCAP57121.2023.10133745. ISBN 978-883129907-7.
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Official URL: https://ieeexplore.ieee.org/document/10133745
Abstract
Phased array antennas are typically designed from a set of largely similar radiating elements that are fed by a beam forming network (BFN). The ambient structure thereby impacts the installed performance and needs to be considered in the excitation coefficients determination. However, obtaining reliable results with purely numerical tools for aerospace composite material structures is questionable without electromagnetic parameter investigation. This work describes a method based on individual far-field measurements of the radiating sub-arrays in a Compact Antenna Test Range (CATR). The full array pattern is synthesized by planar near - field (PNF) techniques. Thereby, the excitation coefficients are optimized to mitigate the actual structure influence without the need for additional electromagnetic material properties investigation. The procedure is exemplified with a linear polarized Ka-band phased array for an airborne synthetic aperture radar application. Individual on structure slotted waveguide antenna (SWA) element measurements, excitation coefficients determination and the synthesized radiation pattern are shown. In a proof of concept with structures that are assumed perfectly conductive, measurement-based processing results are compared with simulations.
| Item URL in elib: | https://elib.dlr.de/195899/ | ||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
| Additional Information: | AMTA convened session “Satellite Antenna Measurements” | ||||||||||||
| Title: | Excitation Coefficient Determination for an Antenna Elevation Network Using Installed Performance Radiation Measurements | ||||||||||||
| Authors: |
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| Date: | 27 March 2023 | ||||||||||||
| Journal or Publication Title: | 17th European Conference on Antennas and Propagation, EuCAP 2023 | ||||||||||||
| Refereed publication: | Yes | ||||||||||||
| Open Access: | No | ||||||||||||
| Gold Open Access: | No | ||||||||||||
| In SCOPUS: | Yes | ||||||||||||
| In ISI Web of Science: | No | ||||||||||||
| DOI: | 10.23919/EuCAP57121.2023.10133745 | ||||||||||||
| Editors: |
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| Publisher: | Institute of Electrical and Electronics Engineers (IEEE) | ||||||||||||
| Series Name: | 2023 17th European Conference on Antennas and Propagation (EuCAP) | ||||||||||||
| ISBN: | 978-883129907-7 | ||||||||||||
| Status: | Published | ||||||||||||
| Keywords: | antenna measurements, phased arrays, beam forming, post-processing techniques, far-field, near-field. | ||||||||||||
| Event Title: | European Conference on Antennas and Propagation (EuCAP) | ||||||||||||
| Event Location: | Florence, Italy | ||||||||||||
| Event Type: | international Conference | ||||||||||||
| Event Dates: | 2023-03-27 - 2023-03-31 | ||||||||||||
| Organizer: | European Association on Antennas and Propagation (EurAAP) | ||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
| HGF - Program: | Space | ||||||||||||
| HGF - Program Themes: | Earth Observation | ||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||
| DLR - Program: | R EO - Earth Observation | ||||||||||||
| DLR - Research theme (Project): | R - SAR Expert Support Lab | ||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||
| Institutes and Institutions: | Microwaves and Radar Institute > SAR Technology | ||||||||||||
| Deposited By: | Gabler, Bernd | ||||||||||||
| Deposited On: | 10 Jul 2023 07:44 | ||||||||||||
| Last Modified: | 10 Jul 2023 07:44 |
Available Versions of this Item
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Excitation Coefficient Determination for an Antenna Elevation Network Using Installed Performance Radiation Measurements. (deposited 21 Dec 2022 14:32)
- Excitation Coefficient Determination for an Antenna Elevation Network Using Installed Performance Radiation Measurements. (deposited 10 Jul 2023 07:44) [Currently Displayed]
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