Feed Forward Correction for Linearity Improvement of LNA

The decreasing gap between wireless channels demands the higher linearity of the receiver circuits. The linearity of receiver greatly depends on the linearity of the low noise amplifier (LNA). The paper presents a high linear LNA architecture to cater the requirements of the modern day RF receivers. The feed forward correction for the improvement in linearity is proposed. The proposed LNA is designed in Cadence Virtuoso environment with 180 nm GPDK. The proposed LNA offers IIP3 as high as 6.42 dBm, whereas 108 dBm value of IIP2 is achieved. The proposed LNA provides gain of 17.4 dB and consumes almost 18 mW of power from the supply of 1.8 V.