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A multimodal dielectric waveguide-based monopulse radar at 160 GHz

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Erstveröffentlichung
2020-07-15
DOI
10.18725/OPARU-33864
Wissenschaftlicher Artikel


Authors
Geiger, Martin
Grüner, Patrik
Fischer, Michael
Dürr, André
Chaloun, Tobias
et al.
Faculties
Fakultät für Ingenieurwissenschaften, Informatik und Psychologie
Institutions
Institut für Mikrowellentechnik
Published in
IEEE Transactions on Microwave Theory and Techniques ; 68 (2020), 11. - S. 4825-4834. - ISSN 0018-9480. - eISSN 1557-9670
Link to original publication
https://dx.doi.org/10.1109/TMTT.2020.3006530
Peer review
ja
Document version
acceptedVersion
License
Standard (ohne Print-on-Demand)
https://oparu.uni-ulm.de/xmlui/license_opod_v1
Abstract
For highly integrated imaging systems above 100 GHz, the complexity and chip area increases significantly with increasing number of channels. In addition, bulky dielectric lenses prevent applications in spatially restricted surroundings. The presented concept of an imaging monopulse radar with a mechanically flexible front end reduces the required chip area and allows the antenna to be placed in any desired position apart from the sensitive electronics. The radar system is based on a two-channel 160 GHz microwave monolithic integrated circuit (MMIC) feeding a flexible dielectric waveguide. Depending on the angle of the incidence signal, a sum mode (HE11 mode) and a difference mode (HE21 mode) are excited in the dielectric waveguide. MMIC and waveguide are connected by a self-aligning transition reducing the requirements for packaging accuracy. The required chip area of the transition is only 0.022λ² with a spacing between the on-chip antennas of λ/4. The measured ambiguity-free region between −18° and 15° is defined by the modified elliptical lens antenna focusing in the E-plane only. A mechanical bending of the flexible waveguide is possible down to a radius of at least 2 cm without affecting the angle estimation capability.
Funding information
ZAFH Mikrosens / MWK BW
Subject Headings
Millimeterwelle [GND]
MMIC [GND]
Multimodales System [GND]
Millimeter waves [LCSH]
Monopulse radar [LCSH]
Keywords
dielectric waveguide; flexible radar sensor; transition
Dewey Decimal Group
DDC 620 / Engineering & allied operations

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Citation example

Geiger, Martin et al. (2020): A multimodal dielectric waveguide-based monopulse radar at 160 GHz. Open Access Repositorium der Universität Ulm. http://dx.doi.org/10.18725/OPARU-33864

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