Microwave performance of InGaAs/InP composite collector bipolar transistors

Abstract
A composite collector heterostructure InGaAs/InP bipolar transistor (CCHBT) is described. The collector design assures both the high breakdown voltage, BV/sub CEO/, and the high speed needed for practical IC applications. The microwave performance of the CCHBT is presented. The authors have fabricated and tested monolithic transimpedance amplifiers based on these composite collector transistors. A bandwidth of 28 GHz and a gain of 40 dB Omega were obtained.