A 0.9 V low power reconfigurable CMOS folded cascode LNA for multi-standard wireless applications

Abstract

In This paper, a reconfigurable CMOS folded cascode LNA for multi-standard wireless applications is presented, including GSM (PCS1900), 3G (UMTS), Bluetooth and WLAN b/g. Based on inductive degenerated folded-cascode topology for low voltage applications, the proposed LNA achieves a good trade-off between good gain, noise figure and power consumption. The input and output matching networks include capacitor switches devices to control the band selection for multi-standard purpose. Implemented in 0.13-μm CMOS technology, the simulated results perform a maximum power gain of 20.82 dB, a noise figure below 1.72 dB, an input and output return loss less than -14 dB and -15 dB, respectively. The LNA achieves -15 dBm of a minimum third-order input intercept point at input frequency of 2.4 GHz. For all standards the proposed LNA consumes only 5.15 mW from 0.9 V supply voltage.