A very low power SiGe LNA for UWB application

We demonstrate the design, implementation, and measurement of the lowest dc power consuming SiGe LNA for UWB applications. A resistive feedback, a device optimization, and an inductive peaking technique are incorporated to enhance the overall LNA performance in terms of noise, gain flatness, input/output matching, linearity, and dc power consumption over the entire UWB band from 3 to 10 GHz. The implemented LNA achieves the gain of 13dB, the NF of 3.3dB, and the IIP3 of -7.5dBm between 2GHz and 10GHz while consuming dc power of as low as 9.6mW. To the best of authors´ knowledge, this LNA exhibits the lowest dc power consumption ever published and the lowest NF over the entire bandwidth for UWB application in a commercial SiGe process.