100 GHz+ Gain-Bandwidth Differential Amplifiers in a Wafer Scale Heterogeneously Integrated Technology Using 250 nm InP DHBTs and 130 nm CMOS. - James Chingwei Li; Kenneth R. Elliott; David S. Matthews; Donald A. Hitko; Daniel Zehnder; Yakov Royter; Pamela R. Patterson; Tahir Hussain; Joseph F. Jensen (IEEE J. Solid State Circuits, 2009)