Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Michael Schlechtweg"'
Autor:
Michael Schlechtweg, Bersant Gashi, Benjamin Baumann, Jutta Kuhn, Christian Zech, Matthias Malzacher, Markus Rosch, Dominik Meier, Leonhard Reindl
Publikováno v:
IEEE Sensors Letters. 5:1-4
To unlock the full potential of composite materials, reliable measurement methods during and after their manufacturing are required. Established measuring methods are commonly based on ultrasound or thermographic imaging techniques and offer only a l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::156c0df3d537e79d09493d8270f57e12
https://doi.org/10.1109/lsens.2021.3055060
https://doi.org/10.1109/lsens.2021.3055060
Autor:
Jutta Kuhn, Benjamin Baumann, Michael Schlechtweg, Leonhard Reindl, Christian Zech, Bersant Gashi, Markus Rosch, Dominik Meier
Publikováno v:
IEEE Transactions on Antennas and Propagation. 68:3080-3093
Composite materials have become indispensable in a wide variety of technical fields, where they are viewed as the key technological component. Due to their structural complexity, these materials are prone to errors while in the manufacturing process,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c88fdf1f9d79faf21a8ae2ffa5333343
https://doi.org/10.1109/tap.2019.2955213
https://doi.org/10.1109/tap.2019.2955213
Autor:
Jutta Kuhn, Benjamin Baumann, Bersant Gashi, Michael Schlechtweg, Markus Rosch, Dominik Meier, Leonhard Reindl, Christian Zech, Torsten Link
Millimeter wave-based material inspection methods are capable of providing 3-D-tomographic images of composite materials with a sufficient resolution to detect, localize, and classify critical defects. The nondestructive and noncontact-based measurem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d6bb4f5d661c3412e64d3c5953aa3d
https://publica.fraunhofer.de/handle/publica/266139
https://publica.fraunhofer.de/handle/publica/266139
Autor:
Thomas Schwarze, Jutta Kuhn, Benjamin Baumann, Leonhard Reindl, Markus Rosch, Dominik Meier, Torsten Link, Michael Schlechtweg, Christian Zech, Bersant Gashi
Publikováno v:
2020 IEEE/MTT-S International Microwave Symposium (IMS).
─ To determine the quality and mechanical stability of composite materials, a defect detection whilst in the processing chain as well as active monitoring during use is inevitable. This can be achieved via the application of millimeter-wave radars,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c0244b2230cf2534ebfdb7ab9d259ad
https://doi.org/10.1109/ims30576.2020.9224056
https://doi.org/10.1109/ims30576.2020.9224056
Autor:
Oliver Ambacher, Michael Schlechtweg, Bersant Gashi, Arnulf Leuther, Markus Rosch, Dominik Meier, Laurenz John, Axel Tessmann, Hermann Massler
Publikováno v:
2020 IEEE/MTT-S International Microwave Symposium (IMS).
In this paper, the design and performance of a medium-power amplifier (MPA) submillimeter-wave monolithic integrated circuit (S-MMIC) is presented. The MPA demonstrates a flat small-signal gain of approximately 20 dB, measured over a frequency span f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::883ea82f9f7fb107525f5c5bad5c55b6
https://doi.org/10.1109/ims30576.2020.9223968
https://doi.org/10.1109/ims30576.2020.9223968
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 66:1312-1318
This paper reports on a broadband high-power amplifier (HPA) millimeter-wave integrated circuit (MMIC) covering the extended W-band (65–125 GHz). The MMIC is based on the Fraunhofer IAF 50-nm gate-length metamorphic high-electron-mobility transisto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65983ed20b46dc52adfc9b952af419f3
https://doi.org/10.1109/tmtt.2017.2772809
https://doi.org/10.1109/tmtt.2017.2772809
Autor:
Axel Tessmann, Arnulf Leuther, Thomas Zwick, Christian Friesicke, Philipp Neininger, Laurenz John, Michael Schlechtweg
Publikováno v:
IEEE Microwave and Wireless Components Letters. 29:143-145
This letter presents a broadband power amplifier (PA) millimeter-wave integrated circuit (MMIC) demonstrating 6.7–8.3-dBm measured output power from 280 to 310 GHz at −5-dBm input power. The measured small-signal gain is 15–20 dB for 266–330
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c2dd6d2753732a6552e38a0c7771607
https://doi.org/10.1109/lmwc.2018.2885916
https://doi.org/10.1109/lmwc.2018.2885916
Autor:
Sandrine Wagner, Rainer Sommer, Jorn Wilcke, Michael Schlechtweg, Daniela Bleh, M. Riessle, Axel Tessmann, Bin Yang, Oliver Ambacher, Arnulf Leuther, H.-P. Stulz, M. Zink, B. Weismann-Thaden, M. Kuri, Markus Rosch, Alexander Dyck
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 65:3474-3484
In this paper, a radar demonstrator system with real-time capability operating at ${W}$ -band is presented. It operates at 90–100 GHz and provides 3-D information about the illuminated scene. The system uses frequency modulated continuous wave sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac68a68bb97c1b9cfb54bb17773ab043
https://doi.org/10.1109/tmtt.2017.2661742
https://doi.org/10.1109/tmtt.2017.2661742
Autor:
Thomas Schwarze, Jutta Kuhn, Christian Zech, Markus Rosch, Dominik Meier, Michael Schlechtweg, Leonhard Reindl, Benjamin Baumann, Torsten Link
A novel data processing algorithm for the generation of tomographic images of composite materials, based on measurements acquired via frequency-modulated continuous-wave (FMCW) radars operating in the millimeter wave regime, is presented. The present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9c10023119a7411aed052a06b4a2f19
https://publica.fraunhofer.de/handle/publica/260115
https://publica.fraunhofer.de/handle/publica/260115
Autor:
Christian Zech, Jutta Kuhn, Mathias Klenner, Oliver Ambacher, Axel Hulsmann, Michael Schlechtweg
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 65:2551-2559
In this paper, we introduce an experimental method that improves the measurement accuracy of millimeter-wave (mmW) ellipsometry for characterization of homogeneous polymers and dielectric composite materials. Our approach is based on using a metal su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eafac3676d9b57c2e27bc8faec99a1a3
https://doi.org/10.1109/tim.2016.2594022
https://doi.org/10.1109/tim.2016.2594022