A 20-Gb/s Simultaneous Bidirectional Transceiver Using a Resistor-Transconductor Hybrid in 0.11- $\mu{\hbox {m}}$ CMOS

This paper presents a 20-Gb/s simultaneous bidirectional transceiver using a resistor-transconductor (R-gm) hybrid in standard 0.11-mum CMOS. The R-gm hybrid separates the inbound signal from the signal line voltage and current without using a replica driver. It eliminates the need for precise matching between the replica- and main-driver characteristics, enabling a data rate of 20 Gb/s per differ...