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We have developed a radiation-hardened, highly linear, wideband, low-noise amplifier (LNA) with programmable gain to serve as the front-end of a plasma-wave instrument for satellite-based electric-field measurements of very low frequency (VLF) phenomena in the Van Allen radiation belts. Fabricated in a commercial 0.25-mum silicon-germanium BiCMOS process, this ASIC leverages radiation-hardness-by-design...