Active Rotman Lens Retro-Reflector

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dc.contributor.advisorOkoniewski, Michal
dc.contributor.authorKiani Amiri, Hanieh
dc.contributor.committeememberNielsen, Jorgen S.
dc.date2023-06
dc.date.accessioned2023-04-20T16:50:58Z
dc.date.available2023-04-20T16:50:58Z
dc.date.issued2023-03-23
dc.description.abstractA major challenge for automotive radar sensors is establishing a secure connection in inclement weather conditions. This study presents further progress in developing an active-loaded Rotman lens retro-reflector that is designed to alleviate this problem by enhancing the radar cross section (RCS). In this novel structure, a Rotman lens is outfitted with low-power reflection amplifiers to enable overall system gain amplification and modulation. The lens antenna has been equipped with an array of printed Yagi antennas, and its monostatic RCS pattern has been measured. The lens antenna exhibits a nearly uniform RCS pattern between ±35 degrees at 5.15 GHz in both active and passive modes. The active lens structure demonstrates a 7.5 dB increase in RCS while loaded with amplifiers with 8 dB gain. With its high gain, broad angular coverage, and low power consumption, this structure is ideal for low-power RCS enhancement applications, such as mm-wave automotive radar sensors.
dc.identifier.citationKiani Amiri, H. (2023). Active Rotman lens retro-reflector (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.urihttps://hdl.handle.net/1880/116083
dc.identifier.urihttps://dx.doi.org/10.11575/PRISM/dspace/40929
dc.language.isoen
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgary
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.subjectRotman lens
dc.subjectradar cross section (RCS)
dc.subjectretrodirective
dc.subjectreflection amplifier
dc.subject.classificationEducation--Sciences
dc.titleActive Rotman Lens Retro-Reflector
dc.typemaster thesis
thesis.degree.disciplineEngineering – Electrical & Computer
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.thesis.accesssetbystudentI do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible.

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