A Broadband Linear Ultra-Compact mm-Wave Power Amplifier With Distributed-Balun O

Abstract

This article presents a broadband power amplifier (PA) with a distributed-balun output network that provides the PA optimum load impedance over a wide bandwidth. The proposed output network comprises two coupled-line sections and absorbs the device output capacitance. It employs a scal- able coupled-line modeling approach that captures both the magnetic (inductive) and electric (capacitive) couplings between windings with fewer parameters and supports a rapid design process. Closed-form design so