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Noise analysis of a photoreceiver using a P-I-N and GaAs HBT distributed amplifier combination

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3 Author(s)
Xizhen Tian ; Nortel Networks, Ottawa, Ont., Canada ; Freundorfer, A.P. ; Roy, L.

A noise analysis for a common-collector-cascode traveling wave HBT preamplifier is developed. The photoreceiver, consisting of a P-I-N and GaAs HBT MMIC distributed amplifier, was implemented using Nortel's f/sub T/=70 GHz GaAs HBT process, is the first to have a P-I-N mounted on the MMIC chip. The P-I-N preamplifier, having a measured bandwidth of 22 GHz, displayed a measured average equivalent input noise current density of 24 pA//spl radic/Hz. Good agreement was obtained between the predicted and measured noise performance.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:13 ,  Issue: 6 )