Heterodyne Spectroscopy with a 225 – 255 GHz SiGe BiCMOS Receiver for Space Applications

Gluck, Alexandra; Schmalz, K.; Rothbart, Nick; Hübers, Heinz‐Wilhelm

doi:10.1109/irmmw-thz50926.2021.9567358

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Tx/rx Characterization1

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2022

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Cited by 2 publications

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“…The third important characteristic is the noise performance of the receiver. We were able to determine noise temperatures around 20,000 K, that even allow for passive heterodyne spectroscopy for space applications (see Figure 3) [13]. Furthermore, the RX should have a high dynamic range to allow detection of a wide range of power levels.…”

Section: Tx/rx Characterizationmentioning

confidence: 99%

A compact breath gas sensor system based on terahertz/millimeter-wave gas spectroscopy

et al. 2022

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We demonstrate a full-cycle breath gas sensor system based on terahertz/millimeter-wave gas spectroscopy. The sensor consists of a transmitter and receiver working around 250 GHz based on SiGe BiCMOS technology. Typical detection thresholds are in the ppm range depending on the respective molecule. The data analysis provides partial pressures of the investigated molecules by fitting of spectra which are measured by wavelength modulation. Beside the spectroscopic measurement and the data analysis, a full cycle of breath analysis includes the sampling and the conditioning of the sample tubes. The full cycle takes about 35 min per sample in average. As the system is compact and easy to operate, it allows for on-site analysis of breath samples in medical laboratories or hospitals.

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Section: Tx/rx Characterizationmentioning

confidence: 99%