A 10dB 44GHz Loss-Compensated CMOS Distributed Amplifier

Abstract

An 8-stage distributed amplifier (DA) suitable for 40Gb/s optical communication is implemented in a 0.13 μm CMOS process. The losses of on-chip transmission lines are compensated by active negative resistors. The DA achieves a flat gain of 10dB from DC to 44GHz with an input and output matching better than -8dB. The core DA and loss compensation circuitry dissipate 44mW and 59mW, respectively.