A Low-Power 2.4-Ghz Receiver Front-End With A Complementary Series Feedback Lna And A Current-Reused Passive Down-Converter Based On Gm-Boosted Tia For Wsn Applications

This letter proposes a 2.4-GHz low power WSN RF front-end with high conversion gain and low noise figure. The proposed complementary series feedback low-noise amplifier (LNA) achieves high voltage gain and low NF with low power consumption. In the passive downconverter, a g(m)-boosted TIA employing local g(m)-boosted feedback structure is proposed to improve the power efficiency. Fabricated in TSMC 55-nm CMOS technology, the proposed front-end achieves a measured conversion gain of 38 dB, a noise figure of 2.75dB at 2.4 GHz with the power consumption of 2.9mW under 1V power supply voltage and the chip area of 0.63mmx0.43mm.