20 Gbit/s photoreceivers have been realised by cascading three distrib
uted pre-amplifiers purposely designed and processed with a GaAs PHEMT
0.2 mu m gate length technology. The bandwidth is 16 GHz, and an aver
age equivalent input noise as low as 12 pA/ root Hz up to 14 GHz is ob
tained. The transimpedance is 63dB Omega.