Ultracompact monostatic MIMO radar with nonredundant aperture

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Erstveröffentlichung
2020-07-13
Wissenschaftlicher Artikel
Authors
Grüner, Patrik
Geiger, Martin
Waldschmidt, Christian
Faculties
Fakultät für Ingenieurwissenschaften, Informatik und PsychologieInstitutions
Institut für MikrowellentechnikPublished in
IEEE Transactions on Microwave Theory and Techniques ; 68 (2020), 11. - S. 4805-4813. - ISSN 0018-9480. - eISSN 1557-9670
Link to original publication
https://dx.doi.org/10.1109/TMTT.2020.3006055Peer review
ja
Document version
publishedVersion
Abstract
Monostatic,multiple-input-multiple-output (MIMO) radar configurations using the same antenna array for transmission and reception inherently lead to redundant virtual antenna positions within the virtual MIMO aperture. This article presents a new method for designing monostatic MIMO radars where this disadvantage may be overcome and nonredundant virtual arrays are yielded by exploiting biomimetic antenna arrays (BMAAs). The new concept of biomimetic MIMO is introduced and thoroughly investigated in this article. Its working principle is compared with conventional monostatic MIMO and verified by radar measurements. The new approach is intended to improve the angle estimation capability of, in particular, small radar systems. Therefore, the concept is applied to an ultracompact two-channel radar monolithic microwave integrated circuit (MMIC) with fully integrated antennas for range and angle measurements in the 150-GHz range. The chip features two monostatic transmit-receive (TRX) channels with an antenna spacing of λ/4 and occupies less than 3 mm² of space. By applying biomimetic MIMO, a virtual aperture consisting of four unique antenna positions and an equivalent total size of around 1.5λ is achieved.
Funding information
Biomimetische Antennenkonzepte für winkelgebende Millimeterwellensensoren / DFG [315290836, WA 3506/6-1]
Subject Headings
MIMO [GND]Bionik [GND]
MMIC [GND]
FMCW-Radar [GND]
Antennengruppe [GND]
Bildgebendes Verfahren [GND]
MIMO systems [LCSH]
Radar [LCSH]
Bionics [LCSH]
Millimeter waves [LCSH]
Keywords
Biomimetic antenna array (BMAA); direction-of-arrival (DOA) estimation; radar-on-chipDewey Decimal Group
DDC 620 / Engineering & allied operationsMetadata
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Grüner, Patrik; Geiger, Martin; Waldschmidt, Christian (2020): Ultracompact monostatic MIMO radar with nonredundant aperture. Open Access Repositorium der Universität Ulm. http://dx.doi.org/10.18725/OPARU-33865