A low power LNA for bluetooth low energy application with consideration of process and mismatch

A low Power LNA for application in bluetooth low energy (BLE) receiver front-end in UMC 130-nm CMOS is presented. A capacitor cross-coupled common-gate LNA has been implemented. Due to the very low current consumption (1 mA @ 1.2 V) of the designed LNA, the standard deviation of the noise figure from the LNA circuit is dominated by process and mismatch. In this work, the reduction of standard deviation of the noise figure is achieved. The designed LNA achieves a noise figure of 3.2 dB and a voltage gain above 20 dB at all the bluetooth specified frequency ranges (2.4-2.483 GHz). The noise figure measurement with the whole receiver chain is done. The LNA fulfills the bluetooth system specifications and the measured power consumption is below 1.2 mW.