An 84 GHz Bandwidth and 20 dB Gain Broadband Amplifier in SiGe Bipolar Technology

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 amplifier consumes a power of 990 mW at a supply of -5.5 V