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An InGaAs-InP HBT differential transimpedance amplifier with 47-GHz bandwidth

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14 Author(s)
Weiner, J.S. ; Lucent Technol. Bell Labs., Murray Hill, NJ, USA ; Lee, J.S. ; Leven, A. ; Baeyens, Y.
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Return-to-zero differential phase-shift keying applications require a differential amplifier with high bandwidth, high gain, low noise, and good input impedance match. In this paper, we describe an InGaAs-InP heterostructure bipolar transistor differential transimpedance amplifier with high bandwidth of 47 GHz and high gain of 56 dB-Ω. The input-referred current noise is less than 35 pA/√Hz over the measurement range up to 40 GHz.

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Solid-State Circuits, IEEE Journal of  (Volume:39 ,  Issue: 10 )