“…Low-mass and low-power highresolution spectrometers with several advanced technologies, such as CMOS-based synthesizers and backend spectrometers, MEMS-based switches, and waveguide based programmable calibration loads, are also being explored. This will enable compact, low-power, and low-cost submm-wave radiometer/spectrometers (such as the one shown in Figure 20) for missions to planetary and cometary bodies, such as Mars, Europa, Enceladus, Venus, and Titan, on ultrasmall platforms, including Cube-Sats and SmallSats [117].…”