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Analysis and design of HBT Cherry-Hooper amplifiers with emitter-follower feedback for optical communications

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3 Author(s)
Holdenried, C.D. ; Dept. of Electr. & Comput. Eng., Univ. of Calgary, Alta., Canada ; Haslett, J.W. ; Lynch, M.W.

In this article, the large-signal, small-signal, and noise performance of the Cherry-Hooper amplifier with emitter-follower feedback are analyzed from a design perspective. A method for choosing the component values to obtain a low group delay distortion or Bessel transfer function is given. The design theory is illustrated with an implementation of the circuit in a 47-GHz SiGe process. The amplifier has 19.7-dB gain, 13.7-GHz bandwidth, and ±10-ps group delay distortion. The amplifier core consumes 34 mW from a -3.3-V supply.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:39 ,  Issue: 11 )