Stability of Feedback Based LNA Topologies for UWB Communication
Since the U.S. Federal Communications Commission (FCC) approved the application of Ultra Wide-Band (UWB) technology for commercial use in early 2002, ranging from 3.1 to 10.6 GHz (bandwidth: 7.5 GHz), the implementation of a UWB system and its sub-blocks has been a challenge for Integrated Circuit (IC) designers. In this paper, the authors present the feedback stability for Ultra Wide-Band (UWB) Low Noise Amplifier (LNA) for application in wireless communication. The stability analyses are selected on the basis of location of poles in s-domain and complexity of the device design. Here, they provide a theoretical treatment of the proposed topologies before their practical implementation.