A very low power SiGe LNA for UWB application

Authors:
  • AJA. Joseph
    A. Joseph

Abstract
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.