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Two linear, large-swing distributed amplifiers (DAs) are reported for future 120-GBaud fiber-optic systems. The measured differential gain and bandwidth are over 20 dB and 70 GHz, respectively, and the P1dB is −2.5 dBm. Eye diagram measurements with at least 4.8-Vpp differential swing were performed for NRZ signals up to a record 120 Gb/s, and with 4-PAM and 8-PAM signals up to 64 GBaud, with the...
This paper reviews recent work on 100+Gb/s SiGe BiCMOS circuits and system architectures for future wireless backhaul and 1Tb/s fiber-optics systems, and explores technology requirements and benchmark circuit scaling in future SiGe BiCMOS nodes for these applications. Among the circuits discussed are a 240GHz signal source with over 7dBm output power, a 108GS/s track and hold amplifier, 120Gb/s TIA,...
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