%0 Journal Article
%T A 0.7 V, Ultra-Wideband Common Gate LNA with Feedback Body Bias Topology for Wireless Applications
%A Manoj Kumar
%A Sandeep K. Arya
%A Vikram Singh
%J -
%D 2018
%R https://doi.org/10.3390/jlpea8040042
%X Abstract An ultra-wideband (UWB) low noise amplifier (LNA) for 3.3¨C13.0 GHz wireless applications using 90 nm CMOS is proposed in this paper. The proposed LNA uses an improved common-gate (CG) topology utilizing feedback body biasing (FBB), which improves noise figure (NF) by a considerable amount. Parallel-series tuned LC network was used between the common-gate first stage and the cascoded common-source (CS) stage to achieve the maximum signal flow from CG to CS stage. Improved CS topology with a series inductor at the drain terminal in the second stage connected and cascoded CS third stage provides high power gain ( S 21) and bandwidth enhancement throughout the complete UWB. A common-drain buffer stage at the output provides high output reflection coefficient ( S 22). It achieves an average power gain ( S 21) of 14.7 ¡À 0.5 dB with a noise figure ( NF) of 3.0¨C3.7 dB. It has an input reflection coefficient ( S 11) less than £¿11.7 dB for 3.3¨C13.0 GHz frequency and output reflection coefficient ( S 22) of less than £¿10.6 dB with a very high reversion isolation ( S 12) of less than £¿72.4 dB. It consumes only 5.2 mW from a 0.7 V power supply. View Full-Tex
%K common-gate
%K feedback body bias
%K low noise amplifier
%K low power
%K UWB
%K wireless communication
%U https://www.mdpi.com/2079-9268/8/4/42