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Design of compressive antenna arrays
Thesis (PhD)--University of Pretoria, 2020.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2020
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| _version_ | 1867613496641847297 |
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| access_status_str | Open Access |
| author2 | Du Plessis, Warren Paul |
| author_browse | Du Plessis, Warren Paul |
| author_facet | Du Plessis, Warren Paul |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Thesis (PhD)--University of Pretoria, 2020. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/73316 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:04.556Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/73316 Design of compressive antenna arrays Du Plessis, Warren Paul laueheinrich@gmail.com Laue, Heinrich Edgar Arnold Antenna feed networks Beamforming Reduced-control arrays Compressive sensing (CS) Antenna arrays UCTD Thesis (PhD)--University of Pretoria, 2020. Reduced-control antenna arrays reduce the number of controls required for beamforming while maintaining a given array aperture. A reduced-control array for direction finding (DF), inspired by the concept of compressive sensing (CS), was recently proposed which uses random compression weights for combining antenna-element signals into fewer measurements. However, this compressive array had not been studied in terms of traditional characteristics such as directivity, sidelobe level (SLL) or beamwidth. In this work, random compression weights are shown to be suboptimal and a need for the optimisation of compressive arrays is expressed. Existing codebook optimisation algorithms prove to be the best starting point for the optimisation of compressive arrays, but are computationally complex. A computationally efficient codebook optimisation algorithm is proposed to address this problem, which inspires the compressive-array optimisation algorithm to follow. Compressive antenna arrays are formulated as a generalisation of reduced-control arrays and a framework is presented for their optimisation in terms of SLL. By allowing arbitrary compression weights, compressive arrays are shown to improve on existing reduced-control techniques. A feed network consisting of interconnected couplers and fixed phase shifters is proposed, enabling the implementation of compressive arrays in microwave hardware. The practical feasibility of compressive arrays is illustrated by successfully manufacturing a 3-GHz prototype compressive array with integrated antenna elements. Electrical, Electronic and Computer Engineering PhD Unrestricted 2020-02-17T07:51:02Z 2020-02-17T07:51:02Z 2020-04-29 2020 Thesis Laue, HEA 2020, Design of compressive antenna arrays, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/73316> A2020 http://hdl.handle.net/2263/73316 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Antenna feed networks Beamforming Reduced-control arrays Compressive sensing (CS) Antenna arrays UCTD Design of compressive antenna arrays |
| title | Design of compressive antenna arrays |
| title_full | Design of compressive antenna arrays |
| title_fullStr | Design of compressive antenna arrays |
| title_full_unstemmed | Design of compressive antenna arrays |
| title_short | Design of compressive antenna arrays |
| title_sort | design of compressive antenna arrays |
| topic | Antenna feed networks Beamforming Reduced-control arrays Compressive sensing (CS) Antenna arrays UCTD |
| url | http://hdl.handle.net/2263/73316 |