InP DHBT based MMICs for [DC-20 GHz] Signal Sampling

Targeting [DC-20 GHz] bandwidth and 40 GS/s sampling rate for high dynamic range (60 dB) ultra fast signal analysis, we present the preliminary experimental results obtained on InP-InGaAs-InP double heterojunction bipolar transistor based MMIC (FT = 180 GHz). The critical circuits leading to wide band signal sampling operation are made of high bandwidth switched emitter follower (SEF) and high bandwidth buffer. They are realized and tested both in time and frequency domains. They exhibit performances in terms of isolation and bandwidth compatible with the targeted objectives