InP D-HBT IC's for 40 Gb/s and higher bitrate lightwave transceivers
01 January 2001
The combination of device speed (fT, fmax>150 GHz) and breakdown voltage (Vbcco of about 10 V), makes the double heterojunction InP-based HBT (D-HBT), a very attractive technology to implement the most demanding analog functions of 40 Gb/s transceivers. This is illustrated by the performance of a number of InP D-HBT circuits including millimeter-wave low phase-noise VCO's up to 146 GHz, low jitter 40 Gb/s limiting amplifiers, a 40 Gb/s driver amplifier with 4.5 V differential output swing and distributed pre-amplifiers with up to 1.4 THz gain-bandwidth