A 1.2 V Low-Noise-Amplifier with Double Feedback for High Gain and Low Noise Figure

Ivan Bastos (1) , F. Querido (1) , D. Amoêdo (1) , Luis B. Oliveira (1) , J. P. Oliveira (1) , João Goes (1) , Manuel M. Silva (2)

1 ULISBOA - Universidade de Lisboa = University of Lisbon
2 Tech. University of Lisbon

In this paper we present a balun low noise amplifier (LNA) in which the gain is boosted using a double feedback structure. The circuit is based in a conventional Balun LNA with noise and distortion cancellation. The LNA is based in two basic stages: common-gate (CG) and common-source (CS). We propose to replace the resistors by active loads, which have two inputs that will be used to provide the feedback (in the CG and CS stages). This proposed methodology will boost the gain and reduce the NF. Simulation results, with a 130 nm CMOS technology, show that the gain is 23.8 dB and the NF is less than 1.8 dB. The total power dissipation is only 5.3(since no extra blocks are required), leading to an FOM of 5.7 mW− 1 from a nominal 1.2 supply.

Mots clés: CMOS LNAs; Noise canceling; Wideband LNA

Domaines: Informatique [cs]

Ivan Bastos, F. Querido, D. Amoêdo, Luis B. Oliveira, J. P. Oliveira, et al.. A 1.2 V Low-Noise-Amplifier with Double Feedback for High Gain and Low Noise Figure. 4th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), Apr 2013, Costa de Caparica, Portugal. pp.573-581, ⟨10.1007/978-3-642-37291-9_62⟩. ⟨hal-01348804⟩