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Ultra-low-voltage LNA with high gain and low noise figure

Bastos I., Oliveira L. B., Oliveira J. P., Goes J., Silva M. M.

International Journal of Microelectronics and Computer Science

2013

Vol. 4, nr 3

124--128

We present a balun LNA with noise and distortion cancellation using double feedforward. A common-gate and a common-source stage are combined, and their resistive loads are replaced by transistors biased close to saturation to allows low supply voltage, without gain degradation. The proposed feedforward boosts the LNA gain and reduces the noise ﬁgure (NF). Simulation results with a 130 nm CMOS technology show that the gain is up to 24 dB and the NF is below 3.2 dB. The total power dissipation is 2.25 mW, leading to an FoM of 6.4 mW-1 with 0.6 V supply.