W-Band Imaging Sensor Using a Rectangular Waveguide Structure With Choke

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00354303" target="_blank" >RIV/68407700:21230/22:00354303 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/LMWC.2021.3134472" target="_blank" >https://doi.org/10.1109/LMWC.2021.3134472</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/LMWC.2021.3134472" target="_blank" >10.1109/LMWC.2021.3134472</a>

Result language
angličtina
Original language name
W-Band Imaging Sensor Using a Rectangular Waveguide Structure With Choke
Original language description
A new application of a rectangular waveguide structure with a choke from Baskakova and Hoffmann (2021) is proposed for high-contrast imaging in the W-band. As with homogeneous lossy waveguides, the field distribution in front of the open-ended sensor is observed and a calibration/correction method is applied. The sensor is evaluated using planar metal- dielectric samples under test (SUT), thus enabling the detection of different materials with a standoff distance ranging from 0.08 to 1.07 λ₀. The sensor can determine both amplitudes and the contrast of the reflection coefficients correctly at the reference plane of the SUT, which is not possible for state-of-the-art sensors. The maximum contrast of the imaging is greater than 26 dB. A spatial resolution and minimum resolution for the tracking of SUT local properties of 1.9 mm are achieved at standoff distances of 2 and 1 mm, respectively.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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