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Reconfigurable Ultra Low Power LNA for 2.4GHz Wireless Sensor Networks

Abstract : this work proposes an Ultra Low Power (ULP) digitally controlled LNA dedicated to Wireless Sensor Networks (WSN) implemented in a 0.13µm CMOS technology. Both optimized topologies and reconfigurable issues are investigated to save power consumption. Based on a self biased inverter, the circuit, operating under 0.6V, consumes 120µW and achieves a gain of 14.6 dB and a NF of 3.8 dB at 2.4GHz. To comply with the flexibility of the Wireless Sensor Network (WSN) in term of RF link budget variability, the core of the LNA can be reconfigured through a 3 bit DAC. Hence the gain and NF are 9.4 dB and 6.2 dB in the low gain mode, suited to cover a 10m range, consuming 30µW
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Submitted on : Wednesday, November 24, 2010 - 11:17:33 AM
Last modification on : Thursday, January 7, 2021 - 4:14:18 PM


  • HAL Id : hal-00539170, version 1


Thierry Taris, Aya Mabrouki, Hassene Kraimia, Yann Deval, Jean-Baptiste Begueret. Reconfigurable Ultra Low Power LNA for 2.4GHz Wireless Sensor Networks. International Conference on Electronics, Circuits, and Systems - ICECS 2010, Dec 2010, Athènes, Greece. pp.150-154. ⟨hal-00539170⟩



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