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X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver
The MeerKAT Radio Telescope is a 64 element antenna array under construction in South Africa. This array will be used to observe radiation from celestial sources at radio frequencies. Once completed, this radio telescope will be the largest and most sensitive radio telescope in the Southern hemisphe...
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| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2018
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| _version_ | 1867611294755979264 |
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| access_status_str | Open Access |
| author | Malan, Jocias A |
| author2 | Geschke, Riana |
| author_browse | Geschke, Riana Malan, Jocias A |
| author_facet | Geschke, Riana Malan, Jocias A |
| author_sort | Malan, Jocias A |
| collection | Thesis |
| description | The MeerKAT Radio Telescope is a 64 element antenna array under construction in South Africa. This array will be used to observe radiation from celestial sources at radio frequencies. Once completed, this radio telescope will be the largest and most sensitive radio telescope in the Southern hemisphere. MeerKAT is being designed to observe radio signals produced by celestial sources at UHF-, L-, S- and X-band frequencies. With the development of the X-band receivers for MeerKAT scheduled to start in the near future, research is required to determine an optimum receiver design for this frequency band. There are two architecture options available for digitization of this band namely direct digitization of the entire band or digitization of a portion of the frequency band using a heterodyne configuration. In this thesis, both these options are investigated to determine the feasibility of both these architectures. A key outcome of this investigation will be the derivation of the specifications of the anti-aliasing filter used in a direct digitization receiver as well as the image reject filter used in the heterodyne receiver. The design of a wideband microwave filter capable of meeting these specifications is also presented. To conclude this investigation, the impact of the designed filter on the performance of the system is presented. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/27969 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/27969 X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver Malan, Jocias A Geschke, Riana Electrical Engineering The MeerKAT Radio Telescope is a 64 element antenna array under construction in South Africa. This array will be used to observe radiation from celestial sources at radio frequencies. Once completed, this radio telescope will be the largest and most sensitive radio telescope in the Southern hemisphere. MeerKAT is being designed to observe radio signals produced by celestial sources at UHF-, L-, S- and X-band frequencies. With the development of the X-band receivers for MeerKAT scheduled to start in the near future, research is required to determine an optimum receiver design for this frequency band. There are two architecture options available for digitization of this band namely direct digitization of the entire band or digitization of a portion of the frequency band using a heterodyne configuration. In this thesis, both these options are investigated to determine the feasibility of both these architectures. A key outcome of this investigation will be the derivation of the specifications of the anti-aliasing filter used in a direct digitization receiver as well as the image reject filter used in the heterodyne receiver. The design of a wideband microwave filter capable of meeting these specifications is also presented. To conclude this investigation, the impact of the designed filter on the performance of the system is presented. 2018-05-07T14:16:03Z 2018-05-07T14:16:03Z 2018 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/27969 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering Malan, Jocias A X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver |
| thesis_degree_str | Master's |
| title | X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver |
| title_full | X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver |
| title_fullStr | X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver |
| title_full_unstemmed | X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver |
| title_short | X-band digitization systems aspects and filters for MeerKAT radio astronomy receiver |
| title_sort | x band digitization systems aspects and filters for meerkat radio astronomy receiver |
| topic | Electrical Engineering |
| url | http://hdl.handle.net/11427/27969 |
| work_keys_str_mv | AT malanjociasa xbanddigitizationsystemsaspectsandfiltersformeerkatradioastronomyreceiver |