A 0.1–6 GHz inductorless differential common gate LNA

A 0.1-6 GHz fully differential common gate low noise amplifier (CGLNA) is proposed in this paper. High equivalent transconductance (gm) is realized with active transconductance-boosting with cross coupling capacitance. By introducing a positive feedback path in active transconductance-boosting circuit, this circuit increases freedom of transconductance, thus alleviates the trade-off between input matching and noise performance. It also improves the noise performance and realizes the high gain under low power consumption. The circuit is implemented in 40nm CMOS process. From the post-layout simulation, this circuit shows 13 dB gain with a 3-dB bandwidth of 4.4 GHz. It achieves a simulation NF of 3 dB at 1 GHz. And the input-referred third-order intercept (IIP3) value is -15.59dBm. The power consumption is 3.6mW from 1V supply.

[1]  Shen-Iuan Liu,et al.  A Broadband Noise-Canceling CMOS LNA for 3.1–10.6-GHz UWB Receivers , 2007, IEEE Journal of Solid-State Circuits.

[2]  Frederic Hameau,et al.  A 1.3mW 20dB gain low power inductorless LNA with 4dB Noise Figure for 2.45GHz ISM band , 2011, 2011 IEEE Radio Frequency Integrated Circuits Symposium.

[3]  David J. Allstot,et al.  A capacitor cross-coupled common-gate low-noise amplifier , 2005, IEEE Transactions on Circuits and Systems II: Express Briefs.

[4]  François Belmas,et al.  A Low Power Inductorless LNA With Double Gm Enhancement in 130 nm CMOS , 2012, RFIC 2012.

[5]  Tao Wang,et al.  Dual cross-coupling LNA with forward body bias technique , 2012 .

[6]  E. Sanchez-Sinencio,et al.  A 2.8-mW Sub-2-dB Noise-Figure Inductorless Wideband CMOS LNA Employing Multiple Feedback , 2011, IEEE Transactions on Microwave Theory and Techniques.

[7]  S.S. Taylor,et al.  A 5GHz resistive-feedback CMOS LNA for low-cost multi-standard applications , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.

[8]  Shen-Iuan Liu,et al.  A broadband noise-canceling CMOS LNA for 3.1-10.6-GHz UWB receiver , 2005, Proceedings of the IEEE 2005 Custom Integrated Circuits Conference, 2005..

[9]  Jean-Michel Fournier,et al.  A Low Power Inductorless LNA With Double ${\rm G} _{\rm m}$ Enhancement in 130 nm CMOS , 2012, IEEE Journal of Solid-State Circuits.