90nm SiGe BiCMOS analog front-end circuits for 80GHz bandwidth large-swing transmitters

An 80GHz bandwidth distributed amplifier with 7V
_pp
differential output swing and P
_O1dB
of 13 dBm per side, a 125GHz bandwidth PIN-diode SPST switch with 23dBm output compression point and over 22 dB of isolation up to 160 GHz, and a 40-100GHz bandpass filter with less than 3dB insertion loss are reported in a 90nm SiGe BiCMOS process. The circuits represent critical building blocks for analog transmitter or receiver front ends in next generation instrumentation and 100GBaud fiberoptic systems.