A wideband feed network for Vivaldi antenna arrays

dc.contributor.authorHall, Natasha Antoinette
dc.contributor.authorOdendaal, J.W. (Johann Wilhelm)
dc.contributor.authorJoubert, Johan W.
dc.contributor.emailwimpie@up.ac.zaen_US
dc.date.accessioned2023-04-26T09:01:53Z
dc.date.available2023-04-26T09:01:53Z
dc.date.issued2022-09
dc.descriptionDATA AVAILABILTY: Data are available on request from the corresponding author: wimpie@up.ac.za.en_US
dc.description.abstractA wideband feed network for a Vivaldi antenna array is presented. A limitation of current wideband antenna arrays is the bandwidth of either the feed network or the antenna element. The proposed antenna array consists of four wideband Vivaldi antennas fed with an improved wideband feed network to extend the useable bandwidth of the array. The proposed feed network consists of coplanar waveguide-to-slotline-to-microstrip line transitions. The feed network has a single coplanar waveguide input and four microstrip line output ports. The feed network achieved uniform amplitude and phase balance and an impedance bandwidth of 160% from 1 GHz to 9 GHz. The feed network was used in a uniform linear antenna array to feed four Vivaldi antenna elements. The Vivaldi antenna array achieved stable radiation patterns from 1.3 GHz to 8 GHz, resulting in a useable bandwidth of 144%. The antenna array has a minimum gain of 8 dBi and a maximum of 13.8 dBi within the frequency band. Results for a prototype Vivaldi antenna array, measured in a compact antenna test range, are presented and compared to simulated results from CST Studio Suite.en_US
dc.description.departmentElectrical, Electronic and Computer Engineeringen_US
dc.description.librarianhj2023en_US
dc.description.urihttp://www.hindawi.com/journals/ijapen_US
dc.identifier.citationHall, N.A., Odendaal, J.W. & Joubert, J. A wideband feed network for Vivaldi antenna arrays. International Journal of Antennas and Propagation. Volume 2022, Article ID 1496851, 10 pages. https://doi.org/10.1155/2022/1496851.en_US
dc.identifier.issn1687-5869 (print)
dc.identifier.issn1687-5877 (online)
dc.identifier.other10.1155/2022/1496851
dc.identifier.urihttp://hdl.handle.net/2263/90498
dc.language.isoenen_US
dc.publisherHindawien_US
dc.rights© 2022 Natasha Antoinette Hall et al. This is an open access article distributed under the Creative Commons Attribution License.en_US
dc.subjectWideband feed networken_US
dc.subjectVivaldi antenna arrayen_US
dc.titleA wideband feed network for Vivaldi antenna arraysen_US
dc.typeArticleen_US

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