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A compact short-wave receiving antenna for use in high-noise areas
An antenna has been developed with a signal-to-noise performance that is better than that of a typical Rhombic antenna during local thunder storms. Although the design is of general application to the reception, in high-noise areas, of long distance transmissions, this work deals in particular with...
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| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2016
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| _version_ | 1867613791053676544 |
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| access_status_str | Open Access |
| author | Muggleton, Louis Miles |
| author2 | Guelke, R |
| author_browse | Guelke, R Muggleton, Louis Miles |
| author_facet | Guelke, R Muggleton, Louis Miles |
| author_sort | Muggleton, Louis Miles |
| collection | Thesis |
| description | An antenna has been developed with a signal-to-noise performance that is better than that of a typical Rhombic antenna during local thunder storms. Although the design is of general application to the reception, in high-noise areas, of long distance transmissions, this work deals in particular with the London-Salisbury circuit, at September noon, 1956, on 21.47 Mc/s. A basis of theoretical comparison between the performances of different antennas has been proposed. It relies on the technique of replacing a thunder storm by an "equivalent radio transmitter" set up on the frequency to which the receiver is tuned and for which the antenna is designed. A V.H.F. scale model has been used to produce an optimum design for the proposed antenna which is an end-fire array of parasitic elements. The polar diagrams and signal-to-noise performance of the proposed design are derived for several different types of earth mat. The method used for these derivations is substantiated by correlation with practical sampling measurements. A specification for the final configuration is given and its applicability is indicated by applying the design to the problem of improving the expected performance on the London-Salisbury transmissions from September to December, 1960. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/22296 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:41:45.494Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| 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:11427/22296 A compact short-wave receiving antenna for use in high-noise areas Muggleton, Louis Miles Guelke, R Besseling, L Electrical Engineering An antenna has been developed with a signal-to-noise performance that is better than that of a typical Rhombic antenna during local thunder storms. Although the design is of general application to the reception, in high-noise areas, of long distance transmissions, this work deals in particular with the London-Salisbury circuit, at September noon, 1956, on 21.47 Mc/s. A basis of theoretical comparison between the performances of different antennas has been proposed. It relies on the technique of replacing a thunder storm by an "equivalent radio transmitter" set up on the frequency to which the receiver is tuned and for which the antenna is designed. A V.H.F. scale model has been used to produce an optimum design for the proposed antenna which is an end-fire array of parasitic elements. The polar diagrams and signal-to-noise performance of the proposed design are derived for several different types of earth mat. The method used for these derivations is substantiated by correlation with practical sampling measurements. A specification for the final configuration is given and its applicability is indicated by applying the design to the problem of improving the expected performance on the London-Salisbury transmissions from September to December, 1960. 2016-10-25T13:34:32Z 2016-10-25T13:34:32Z 1960 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/22296 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering Muggleton, Louis Miles A compact short-wave receiving antenna for use in high-noise areas |
| thesis_degree_str | Doctoral |
| title | A compact short-wave receiving antenna for use in high-noise areas |
| title_full | A compact short-wave receiving antenna for use in high-noise areas |
| title_fullStr | A compact short-wave receiving antenna for use in high-noise areas |
| title_full_unstemmed | A compact short-wave receiving antenna for use in high-noise areas |
| title_short | A compact short-wave receiving antenna for use in high-noise areas |
| title_sort | compact short wave receiving antenna for use in high noise areas |
| topic | Electrical Engineering |
| url | http://hdl.handle.net/11427/22296 |
| work_keys_str_mv | AT muggletonlouismiles acompactshortwavereceivingantennaforuseinhighnoiseareas AT muggletonlouismiles compactshortwavereceivingantennaforuseinhighnoiseareas |