Jonathan Hoh, Christopher Groppi, Jose V. Siles, Robert H. Lin, Philip Mauskopf, Choonsup Lee, Phil Putman, Adrian J. Tang,
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10708/1070817/New-developments-for-integrated-Schottky-receivers-in-the-terahertz-regime/10.1117/12.2312927.short?SSO=1
Recent advances in small satellite technology now allow us to consider their use for astrophysics and other remote sensing applications. One wavelength regime of intense interest to astrophysics is the terahertz portion of the electromagnetic spectrum as this is where water vapor and molecular oxygen lie. Water lines at 557 GHz and the 1100-1200 GHz band are excellent diagnostics of water vapor in the interstellar medium, the Earth’s atmosphere and the atmospheres of other planetary bodies. Here we present the preliminary results of a low-mass, low-power highly integrated Schottky diode based coherent receiver system suitable for deployment on cubesats or other small satellite platforms. The current state of the art coherent Schottky receivers are too large to consider deploying on any smaller form of space-based satellite. Using novel packaging methods, we have taken already existing cutting-edge modular 520-600 GHz receivers and packaged them into an integrated system with a volume and power consumption significantly smaller than the state of the art. We also present the designs of a similar integrated receiver for the first excited state of water vapor operating at the 1040-1200 GHz range. Further research will be spent exploring whether we can use passively cooling technologies to better enhance the performance of these Schottky receivers.
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