P. Kangaslahti, B. Lim, T. Gaier, A. Tanner, M. Varonen, L. Samoska, Shannon T. Brown, B. Lambrigtsen, S. Reising, Jordan M. Tanabe, O. Montes, D. Dawson, C. Parashare
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Low noise amplifier receivers for millimeter wave atmospheric remote sensing
We currently achieve 3.4 dB noise figure at 183GHz and 2.1 dB noise figure at 90 GHz with our MMIC low noise amplifiers (LNAs) in room temperature. These amplifiers and the receivers we have built using them made it possible to conduct highly accurate airborne measurement campaigns from the Global Hawk unmanned aerial vehicle, develop millimeter wave internally calibrated radiometers for altimeter radar path delay correction, and build prototypes of large arrays of millimeter receivers for a geostationary interferometric sounder. We use the developed millimeter wave receivers to measure temperature and humidity profiles in the atmosphere and in hurricanes as well as to characterize the path delay error in ocean topography altimetry.
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