A Design of Ultra Wide Band Switched-Gain Controlled Low Noise Amplifier Using 0.18 um CMOS

A switched-gain controlled LNA is designed and implemented in 0.18 um CMOS technology for UWB system. In high gain mode, measurement shows a power gain of 12.5 dB, an input IP3 of 0 dBm, while consuming only 8.13 mA of current. In low gain mode, measurement shows a power gain of -8.7 dB, an input IP3 of 9.1 dBm, while consuming only 0 mA of current.