Low-profile terahertz radar based on broadband leaky-wave beam steering

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dc.contributor.authorMurano, K.
dc.contributor.authorWatanabe, I.
dc.contributor.authorKasamatsu, A.
dc.contributor.authorSuzuki, S.
dc.contributor.authorAsada, M.
dc.contributor.authorWithayachumnankul, W.
dc.contributor.authorTanaka, T.
dc.contributor.authorMonnai, Y.
dc.date.issued2017
dc.descriptionDate of publication December 1, 2016; date of current version January 12, 2017.
dc.description.abstractWe demonstrate short-range terahertz radar based on a leaky-wave antenna with a beam steering capability. As a proof of concept, we develop a microstrip-based periodic leakywave antenna driven by a vector network analyzer. By sweeping the frequency from235 to 325 GHz, beam steering from−23◦ to+15◦ across the broadside can be achieved with a nearly constant beam width of 4◦. Small target detection is demonstrated by locating a metal cylinder with a diameter of 12 mm placed 46–86 mm in front of the antenna with a mean error of 2.4 mm. The use of a leaky-wave antenna can pave the way for developing a low-loss, low-profile, and wide-aperture terahertz radar. Importantly, it can be integrated with a solid-state source and a detector. The proposed approach is particularly promising for use with emerging small devices such as drones or wearable devices, where millimeter-wave radar is not suitable in terms of the resolution and system footprint.
dc.description.statementofresponsibilityKosuke Murano, Issei Watanabe, Akifumi Kasamatsu, Safumi Suzuki, Masahiro Asada, Withawat Withayachumnankul, Toshiyuki Tanaka, and Yasuaki Monnai
dc.identifier.citationIEEE Transactions on Terahertz Science and Technology, 2017; 7(1):60-69
dc.identifier.doi10.1109/TTHZ.2016.2624514
dc.identifier.issn2156-342X
dc.identifier.issn2156-3446
dc.identifier.orcidWithayachumnankul, W. [0000-0003-1155-567X]
dc.identifier.urihttp://hdl.handle.net/2440/129394
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers
dc.rights© 2016 IEEE
dc.source.urihttps://doi.org/10.1109/tthz.2016.2624514
dc.subjectBeam steering; broadside radiation; leakywave antennas (LWA); terahertz radar; waveguide-to-microstrip couplers
dc.titleLow-profile terahertz radar based on broadband leaky-wave beam steering
dc.typeJournal article
pubs.publication-statusPublished

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