A 3D Printed Quad-Ridged Flared Horn Antenna Feeder for Radio-Telescopes
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866913706705682432 |
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| author | Hofmann, Andreas Stratakos, Yorgos Marantis, Leonidas Spanakis-Misirlis, Vasileios Khouri, Danti Kanatas, Athanasios |
| author_facet | Hofmann, Andreas Stratakos, Yorgos Marantis, Leonidas Spanakis-Misirlis, Vasileios Khouri, Danti Kanatas, Athanasios |
| contents | This study proposes a 3D-printed, quad-ridged, dual-pol, flared horn antenna feeder to meet the demands of a modern radio-telescope. The research work presented in this paper involves both the theoretical and the customized / adapted mechanical design of the proposed horn antenna, as well as a description of the 3D-printing and coating process. A novel slotted waveguide approach is followed for perfectly homogeneous coating. Additional mechanical adaptions (i.e. optimized feed section, radome) are employed to provide realistic simulation results. The proposed antenna offers a dual polarization capability and an attractive radiation beam to properly illuminate a 6m mesh dish reflector. A satisfying impedance matching from 1-3 GHz is achieved in both polarizations while maintaining an excellent isolation between the two N-type ports. Reflection coefficient and radiation pattern simulation results are presented, derived from the theoretical and the adapted mechanical design, exhibiting a close agreement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_18243 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A 3D Printed Quad-Ridged Flared Horn Antenna Feeder for Radio-Telescopes Hofmann, Andreas Stratakos, Yorgos Marantis, Leonidas Spanakis-Misirlis, Vasileios Khouri, Danti Kanatas, Athanasios Instrumentation and Methods for Astrophysics This study proposes a 3D-printed, quad-ridged, dual-pol, flared horn antenna feeder to meet the demands of a modern radio-telescope. The research work presented in this paper involves both the theoretical and the customized / adapted mechanical design of the proposed horn antenna, as well as a description of the 3D-printing and coating process. A novel slotted waveguide approach is followed for perfectly homogeneous coating. Additional mechanical adaptions (i.e. optimized feed section, radome) are employed to provide realistic simulation results. The proposed antenna offers a dual polarization capability and an attractive radiation beam to properly illuminate a 6m mesh dish reflector. A satisfying impedance matching from 1-3 GHz is achieved in both polarizations while maintaining an excellent isolation between the two N-type ports. Reflection coefficient and radiation pattern simulation results are presented, derived from the theoretical and the adapted mechanical design, exhibiting a close agreement. |
| title | A 3D Printed Quad-Ridged Flared Horn Antenna Feeder for Radio-Telescopes |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2502.18243 |