improve MMIC Power Amp DesignAPPLICATION NOTE USING LOAD PULL ANALYSIS AND DEVICE MODEL VALIDATION TO IMPROVE MMIC POWER AMPLIFIER DESIGN METHODOLOGIES This article describes a methodology for the design of a 2 GHz monolithic microwave integrated circuit (MMIC) power amplifier (PA) using a heterojunction bipolar transistor (HBT) process. It is based on the use of modern software tools and advanced load pull simulations to validate the device model extensively before simulating the amplifier circuit as a whole. When this approach is used, the matching networks and final design require virtually no tuning or design iterations. T here is certainly no shortage of information about designing power amplifiers these days, and several books address the subject quite admirably.1-6 However, as well as these books cover the t……