Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31979
Title: | Impact of mutual coupling between SKALA4.1 antennas to the spectral smoothness response | Authors: | BOLLI, Pietro Mirko Bercigli DI NINNI, PAOLA Lorenzo Mezzadrelli Giuseppe Virone |
Issue Date: | 2022 | Journal: | JOURNAL OF ASTRONOMICAL TELESCOPES, INSTRUMENTS, AND SYSTEMS | Number: | 8 | Issue: | 1 | Abstract: | One of the advantages of arrays with aperiodic distributed elements is their ability to mitigate the detrimental mutual coupling effects on the radiation pattern. However, we show that the mutual coupling inside a random array can still generate undesired structures in the frequency response although the single antenna features a spectral smooth response. For small subsets (a couple of SKALA4.1 antennas and a 16-element array) of a low-frequency instrument station of the Square Kilometre Array, the combination of large mutual coupling and antenna geometry creates systematic distortions in the element frequency responses. This phenomenon compromises the station spectral smoothness response versus frequency. However, we demonstrate that it is possible to partially mitigate these frequency structures by reconfiguring the antenna distribution based on exclusion zones. | URI: | http://hdl.handle.net/20.500.12386/31979 | URL: | https://www.spiedigitallibrary.org/journals/Journal-of-Astronomical-Telescopes-Instruments-and-Systems/volume-8/issue-01/011023/Impact-of-mutual-coupling-between-SKALA41-antennas-to-the-spectral/10.1117/1.JATIS.8.1.011023.full | ISSN: | 2329-4124 | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
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011023_1 (2).pdf | Pdf editoriale | 6.44 MB | Adobe PDF | View/Open |
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