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Optimized passive devices for low-power LNA design

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4 Author(s)
Gil, I. ; Dept. d''Eng. Electron., Univ. Politec. de Catalunya (UPC), Terrassa, Spain ; Fernández, R. ; Sieiro, J.J. ; López-Villegas, J.M.

This paper addresses the design of high-Q passive inductors and differential transformers in a low-power low-noise amplifier (LNA) application. The passives quality in resonant LC tanks as well as in the matching network and degeneration inductors has been improved by balancing the trade-off between ohmic losses and Eddy current degradation. As a result, the enhanced passives Q-factor for the optimized passive devices has been used in order to design a 2.4 GHz fully integrated high-gain current-reused LNA, implemented in 0.18 μm CMOS technology. The LNA performance show a gain of roughly 30 dB, while dissipating 0.9 mA from a 1.2 V supply.

Published in:

Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on

Date of Conference:

12-15 Dec. 2010