A Wideband Feed Network for Vivaldi Antenna Arrays
A 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 ex...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2022/1496851 |
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| _version_ | 1832554746971422720 |
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| author | Natasha Antoinette Hall Johann Wilhelm Odendaal Johan Joubert |
| author_facet | Natasha Antoinette Hall Johann Wilhelm Odendaal Johan Joubert |
| author_sort | Natasha Antoinette Hall |
| collection | DOAJ |
| description | A 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. |
| format | Article |
| id | doaj-art-0e1bd8491c3f4c1a85a8a0c870e1ae7c |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-0e1bd8491c3f4c1a85a8a0c870e1ae7c2025-02-03T05:50:37ZengWileyInternational Journal of Antennas and Propagation1687-58772022-01-01202210.1155/2022/1496851A Wideband Feed Network for Vivaldi Antenna ArraysNatasha Antoinette Hall0Johann Wilhelm Odendaal1Johan Joubert2Centre for ElectromagnetismCentre for ElectromagnetismCentre for ElectromagnetismA 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.http://dx.doi.org/10.1155/2022/1496851 |
| spellingShingle | Natasha Antoinette Hall Johann Wilhelm Odendaal Johan Joubert A Wideband Feed Network for Vivaldi Antenna Arrays International Journal of Antennas and Propagation |
| title | A Wideband Feed Network for Vivaldi Antenna Arrays |
| title_full | A Wideband Feed Network for Vivaldi Antenna Arrays |
| title_fullStr | A Wideband Feed Network for Vivaldi Antenna Arrays |
| title_full_unstemmed | A Wideband Feed Network for Vivaldi Antenna Arrays |
| title_short | A Wideband Feed Network for Vivaldi Antenna Arrays |
| title_sort | wideband feed network for vivaldi antenna arrays |
| url | http://dx.doi.org/10.1155/2022/1496851 |
| work_keys_str_mv | AT natashaantoinettehall awidebandfeednetworkforvivaldiantennaarrays AT johannwilhelmodendaal awidebandfeednetworkforvivaldiantennaarrays AT johanjoubert awidebandfeednetworkforvivaldiantennaarrays AT natashaantoinettehall widebandfeednetworkforvivaldiantennaarrays AT johannwilhelmodendaal widebandfeednetworkforvivaldiantennaarrays AT johanjoubert widebandfeednetworkforvivaldiantennaarrays |