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This paper presents a highly integrated wideband linear receiver with on-chip active frequency doubler implemented in a low-cost 200/180 GHz fT/fmax 0.18 μm SiGe BiCMOS technology. Individual receiver circuit blocks including low-noise amplifier, passive balun, mixer, and frequency doubler have been independently characterized and optimized for wideband, NF, and linearity performance. The receiver...
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