A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out
J. Wessel, K. Schmalz, C. Scheytt, D. Kissinger, IEEE Microwave and Wireless Components Letters 27 (2017) 198–200.
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Journal Article
| English
Author
Wessel, Jan;
Schmalz, Klaus;
Scheytt, ChristophLibreCat;
Kissinger, Dietmar
Abstract
This work describes an electrical interferometer for contactless permittivity measurements working at 120 GHz. It was fabricated in a 130 nm SiGe process featuring an ft and fmax of 240 and 330 GHz. The on-chip system contains a 120 GHz VCO with a tuning range of 7 GHz featuring a divide-by-64 circuit to enable external PLL operation. The subsequent buffer provides 7 dBm of output power at 120 GHz. Additionally, the IC contains high-precision and high-resolution phase shifters based on a slow-wave transmission line approach with digital control for direct readout ability. A 120 GHz LNA with 17 dB gain and a power detector to provide DC output signals were realized on chip. It enables sample emulation capability by phase shift inducement in the measurement as well as a reference transmission line. In terms of phase detection, the system shows a sensitivity of 907.36 MHz/°.
Publishing Year
Journal Title
IEEE Microwave and Wireless Components Letters
Volume
27
Issue
2
Page
198-200
eISSN
LibreCat-ID
Cite this
Wessel J, Schmalz K, Scheytt C, Kissinger D. A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out. IEEE Microwave and Wireless Components Letters. 2017;27(2):198-200. doi:10.1109/LMWC.2017.2649384
Wessel, J., Schmalz, K., Scheytt, C., & Kissinger, D. (2017). A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out. IEEE Microwave and Wireless Components Letters, 27(2), 198–200. https://doi.org/10.1109/LMWC.2017.2649384
@article{Wessel_Schmalz_Scheytt_Kissinger_2017, title={A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out}, volume={27}, DOI={10.1109/LMWC.2017.2649384}, number={2}, journal={IEEE Microwave and Wireless Components Letters}, author={Wessel, Jan and Schmalz, Klaus and Scheytt, Christoph and Kissinger, Dietmar}, year={2017}, pages={198–200} }
Wessel, Jan, Klaus Schmalz, Christoph Scheytt, and Dietmar Kissinger. “A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out.” IEEE Microwave and Wireless Components Letters 27, no. 2 (2017): 198–200. https://doi.org/10.1109/LMWC.2017.2649384.
J. Wessel, K. Schmalz, C. Scheytt, and D. Kissinger, “A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out,” IEEE Microwave and Wireless Components Letters, vol. 27, no. 2, pp. 198–200, 2017, doi: 10.1109/LMWC.2017.2649384.
Wessel, Jan, et al. “A 120-GHz Electrical Interferometer for Contactless Permittivity Measurements With Direct Digital Read-Out.” IEEE Microwave and Wireless Components Letters, vol. 27, no. 2, 2017, pp. 198–200, doi:10.1109/LMWC.2017.2649384.
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