A W-band balanced frequency doubler with an optimized harmonic termination and neutralization technique is proposed for high output power and high conversion efficiency in a 90-nm SiGe process. The proposed design demonstrates a peak conversion gain of 0.7 dB and the maximum output power higher than 4 dBm at an output frequency of 84 GHz with the conversion efficiency of 14%.
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Lee et al. (2021) studied this question.
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