Design and analysis of an underwater leaky wave antenna

dc.contributor.advisorHaberman, Michael R. (Michael Richard), 1977-
dc.creatorBroadman, Craig Wing
dc.creator.orcid0000-0002-2814-1572
dc.date.accessioned2021-08-28T00:59:39Z
dc.date.available2021-08-28T00:59:39Z
dc.date.created2021-05
dc.date.issued2021-05-07
dc.date.submittedMay 2021
dc.date.updated2021-08-28T00:59:39Z
dc.description.abstractAcoustic imaging in water traditionally relies on phased arrays of active electro-acoustic transducers to steer acoustic energy in specific directions. Prevalent in ships, submarines, and autonomous underwater vehicles (AUVs), phased arrays are high in weight and processing power. One potential alternative approach to steer acoustic beams is to use a single transducer attached to a dispersive antenna that radiates or receives acoustic energy from different directions as the frequency of operation changes. This is known as a leaky wave antenna (LWA). While LWAs have been proven effective in beam steering for electromagnetic and air-borne acoustic waves, the design of an analog device in water presents a unique challenge due to the low contrast in acoustic impedance between elastic solids and water, which necessitates the consideration of fluid-elastic coupling in the design of the elastic LWA. This work presents an approach to design an elastic metamaterial waveguide coupled to an external fluid domain as one means to create an acoustic LWA for underwater operation.
dc.description.departmentMechanical Engineering
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/2152/87234
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/14184
dc.language.isoen
dc.subjectAcoustics
dc.subjectLeaky wave antenna
dc.subjectSonar
dc.subjectUnderwater
dc.subjectBeam-forming
dc.subjectBeam steering
dc.subjectMetamaterial
dc.subjectWaveguide
dc.titleDesign and analysis of an underwater leaky wave antenna
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentMechanical Engineering
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorThe University of Texas at Austin
thesis.degree.levelMasters
thesis.degree.nameMaster of Science in Engineering

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