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Design of a wideband sinuous antenna for radio telescope applications
Thesis (MEng)--Stellenbosch University, 2018.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2018
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| _version_ | 1867614015112347648 |
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| access_status_str | Open Access |
| author | Steenkamp, Nicol |
| author2 | De Villiers, Dirk I. L. |
| author_browse | De Villiers, Dirk I. L. Steenkamp, Nicol |
| author_facet | De Villiers, Dirk I. L. Steenkamp, Nicol |
| author_sort | Steenkamp, Nicol |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--Stellenbosch University, 2018. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/103570 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:45:19.124Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/103570 Design of a wideband sinuous antenna for radio telescope applications Steenkamp, Nicol De Villiers, Dirk I. L. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Arrays, Antenna Antenna patterns Radio telescopes UCTD Thesis (MEng)--Stellenbosch University, 2018. ENGLISH ABSTRACT: This thesis investigates a pyramidal sinuous antenna. It was suggested in a previous study that the pyramidal shape would be easier to manufacture than a conical shape. To test this, a model was simulated and manufactured to operate over 2 - 6 GHz. It proved to be more robust with a differential reflection coefficient around -10 dB compared to its conical counterpart which is around -5 dB. The wideband capabilities were also investigated. A new modelling approach was required for the wide bandwidth. Though a 10:1 version was simulated, the manufactured model only performed decently over a 5:1 bandwidth. A parameter study was also conducted on the antenna to estimate its performance in Band 1 of the Square Kilometre Array. The best performance results were determined with the best mean sensitivity possible, while maintaining a differential reflection coefficient less than -10 dB, being 4.6 m2/K. AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek 'n piramiediese siniese antenna. Dit was voorgestel in 'n vorige studie dat 'n piramiediese vorm makliker sou wees om te vervaardig as 'n koniese vorm. 'n Model was gesimuleer en vervaardig om oor 2 - 6 GHz te werk om hierdie te toets. Dit is bewys as meer robuust met 'n differensiele weerkaatskoeffisient rondom -10 dB in vergelyking met sy koniese eweknie wat rondom -5 dB is. Die wyeband vermoens was ook ondersoek. 'n Nuwe benadering tot modellering was nodig vir die wye bandwydte. Alhoewel 'n 10:1 weergawe gesimuleerd is, het die vervaar-dige model slegs billik oor 'n 5:1 bandwydte gewerk. 'n Parametriese studie was ook gedoen op die antenna om sy vermoens in Band 1 van die Square Kilomtre Array te bepaal. The beste resultate was bepaal met die beste gemiddelde sensitiwiteit moontlik, terwyl 'n differensiele weerkaatskoeffisient minder as -10 dB gehandhaaf word, as 4.6 m2/K ontdek is. 2018-02-20T10:01:45Z 2018-04-09T07:01:22Z 2018-02-20T10:01:45Z 2018-04-09T07:01:22Z 2018-03 Thesis http://hdl.handle.net/10019.1/103570 en_ZA Stellenbosch University 83 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Arrays, Antenna Antenna patterns Radio telescopes UCTD Steenkamp, Nicol Design of a wideband sinuous antenna for radio telescope applications |
| title | Design of a wideband sinuous antenna for radio telescope applications |
| title_full | Design of a wideband sinuous antenna for radio telescope applications |
| title_fullStr | Design of a wideband sinuous antenna for radio telescope applications |
| title_full_unstemmed | Design of a wideband sinuous antenna for radio telescope applications |
| title_short | Design of a wideband sinuous antenna for radio telescope applications |
| title_sort | design of a wideband sinuous antenna for radio telescope applications |
| topic | Arrays, Antenna Antenna patterns Radio telescopes UCTD |
| url | http://hdl.handle.net/10019.1/103570 |
| work_keys_str_mv | AT steenkampnicol designofawidebandsinuousantennaforradiotelescopeapplications |