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Active and Passive Electronic Components
Volume 2016 (2016), Article ID 8351406, 10 pages
http://dx.doi.org/10.1155/2016/8351406
Research Article

Energy-Aware Low-Power CMOS LNA with Process-Variations Management

1Centro de Investigaciones en Microelectrónica (CIME-CUJAE), Antigua Carretera de Vento, km 8, Capdevila, Boyeros, 10800 Havana, Cuba
2Universidade Federal de Itajubá (UNIFEI), Avenida BPS 1303, Bairro Pinheirinho, Caixa Postal 50, 37500 903 Itajubá, MG, Brazil
3Instituto de Microelectrónica de Sevilla (IMSE-CNM-CSIC), Parque Científico y Tecnológico Cartuja, Calle Américo Vespucio s/n, 41092 Sevilla, Spain

Received 22 November 2015; Revised 18 January 2016; Accepted 20 January 2016

Academic Editor: Ching Liang Dai

Copyright © 2016 Jorge Luis González et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A reconfigurable low-noise amplifier (LNA) with digitally controllable gain and power consumption is presented. This architecture allows increasing power consumption only when required, that is, to improve LNA’s radiofrequency performance at extreme communication-channel conditions and/or to counteract the effect of process, voltage, and temperature variations. The proposed design leads to significant power saving when a relaxed operation is acceptable. The LNA is implemented in a 130 nm 1.2 V CMOS technology for a 2.4 GHz IEEE-802.15.4 application. Simulated LNA performance (taking into account the worst cases under process variations) is comparable to recently published works.