Broadband Power Amplifier Limitations due to Package Parasitics

Abstract

Limitations of CMOS broadband power amplifiers due to package parasitics have been explored in this paper. The constraints of power amplifier matching network, realized as a third-order Chebyshev filter, have been derived, and a new power amplifier design flow has been proposed. As an example of a proposed design flow, an UWB power amplifier has been designed. Transistor level large signal simulation results are in excellent agreement with theoretical predictions.