Title :
A 73 GHz, 180 Ohm PHEMT transimpedance amplifier, employing gm tapering, for OC768 optical receivers
Author :
Fratti, Roger A. ; Hui, Kai
Author_Institution :
Agere Syst. Inc., USA
Abstract :
A distributed TIA with 180 Ohm transimpedance, 73 GHz 3 dB BW, group delay below 20 pS, 840 mVpp output swings, output return loss better than 15 dB through 40 GHz and a linear range above 3 mA input detector current is presented. The amplifier employs a gm tapering technique that improves transimpedance without a significant increase in power consumption. Optical-electrical performance is presented demonstrating performance suitable for both RZ and NRZ 40 GB/s systems.
Keywords :
high electron mobility transistors; millimetre wave amplifiers; millimetre wave transistors; optical receivers; power consumption; semiconductor device models; semiconductor process modelling; 180 ohm; 3 dB; 73 GHz; NRZ; OC768 optical receivers; PHEMT transimpedance amplifier; gm tapering; non return to zero systems; optical electrical performance; optical fiber communication; power consumption; pseudomorphic high electron mobility transistor; return to zero systems; Delay; Detectors; Energy consumption; Optical amplifiers; Optical losses; Optical receivers; PHEMTs; Power amplifiers; Semiconductor optical amplifiers; Stimulated emission;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1339089
