Performances Analysis of Low Noise Amplifier Based on BJT for Power Aware Wake-Up Receiver Nodes

Low Noise Amplifiers (LNA) are usually used in the front-end antenna of Radio Frequency (RF) receivers. The LNA boosts the input power and increases the receiver sensitivity with a minimum of noise. Especially for Wake-Up receivers (WuRx), a trade-off between power consumption and sensitivity should be considered. On one side, a high gain should be performed and on the other side, the power consumption should be as low as possible to be able to realize a wireless communication with a minimum of latency. In this work, performed analysis of LNA based on various configurations with transistors are present. The results show that a trade-off between all LNA requirements exists. As Wireless Sensor Networks (WSN) applications face many resource constraints, the selection of adequate component parameters and architectures should be well discussed.