A LOW POWER 2.4 GHz LOW NOISE AMPLIFIER BYPASS SWITCH WITH CURRENT REUSE TECHNIQUE

Abstract

Low-noise amplifier (LNA) is an electronic amplifier used to amplify possibly very weak signals. An LNA is a key component which is placed at the front-end of a radio receiver circuit. The growing demand for low-cost and low-power CMOS radio frequency (RF) transceivers in the application of wireless body sensor networks and RF identification encourages research on low-power and ultralow-power RF circuit design techniques such as current reusing. A typical example of a current-reusing technique is stacking one current-hungry module on top of another to share their dc bias current, thus, the power consumption can be reduced significantly. In this project a low power 2.4 GHz Low-noise amplifier bypass switch is proposed to reduce the power consumption and improving linearity. This is single ended input and differential output low noise amplifier used in WLAN RF front end. The designed LNA based on 0.13μm CMOS technology demonstrates a 25.27dB gain (S21), noise figure 2.65dB, input and output return loss (S11 and S22) -10.078dB and -10.427dB respectively at 2.4GHz frequency with voltage supply of 1.2V.