This paper reports on the design, fabrication, and characterization of a lumped broadband amplifier in SiGe bipolar technology. The measured differential gain is 20 dB with a 3-dB bandwidth of more than 84 GHz, which is the highest bandwidth reported so far for broadband SiGe bipolar amplifiers. The resulting gain bandwidth product (GBW) is more than 840 GHz. The amplifier consumes a power of 990 mW at a supply of -5.5 V.
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Trotta et al. (2007) studied this question.
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