A Liquid Crystal-Switched Passive Van Atta Array Element for Millimetre-Wave Automobile Radar Target Enhancement and Concurrent Data Modulation in Adverse Weather Conditions

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atmire.migration.oldid5477
dc.contributor.advisorOkoniewski, Michal
dc.contributor.advisorNielsen, Jorgen
dc.contributor.authorDratnal, Anthony Jan
dc.contributor.committeememberBelostotski, Leonid
dc.contributor.committeememberMessier, Geoffrey
dc.date.accessioned2017-05-01T17:35:59Z
dc.date.available2017-05-01T17:35:59Z
dc.date.issued2017
dc.date.submitted2017en
dc.description.abstractSevere weather challenges drivers by degrading visibility and road conditions. Modern automotive collision avoidance systems also experience degraded performance in bad weather, which reduces the range of car-mounted sensors that detect obstacles on the road, and of communication networks that warn other cars about hazards. Radar systems are resistant to most weather but remain affected by heavy rainfall, due to regulatory constraints on frequency and power. Radar architectures can improve, but this thesis proposes to enhance the detectability of vehicles by increasing their radar cross sections with a new automotive safety device: a conformal retrodirective patch antenna array installed into car bodywork. A millimetre-wave array element with a novel liquid crystal switch is successfully simulated, fabricated, and experimentally shown to sufficiently modulate the retransmitted radar signal to piggyback data. This guarantees safe detection ranges in worst-case rain showers and replaces secondary communication systems, minimizing environmental RF pollution.en_US
dc.identifier.citationDratnal, A. J. (2017). A Liquid Crystal-Switched Passive Van Atta Array Element for Millimetre-Wave Automobile Radar Target Enhancement and Concurrent Data Modulation in Adverse Weather Conditions (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/24769en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/24769
dc.identifier.urihttp://hdl.handle.net/11023/3788
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Automotive
dc.subjectEngineering--Electronics and Electrical
dc.subject.otherautomotive radar
dc.subject.otherradar target enhancer
dc.subject.otherVan Atta array
dc.subject.otherliquid crystal switching
dc.subject.otherweather degradation of radar range
dc.titleA Liquid Crystal-Switched Passive Van Atta Array Element for Millimetre-Wave Automobile Radar Target Enhancement and Concurrent Data Modulation in Adverse Weather Conditions
dc.typemaster thesis
thesis.degree.disciplineElectrical and Computer Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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