Articles
Simulation Procedures And Considerations For Power Amplifier Design In Agilent Genesys
August 4, 2009
By Modelithics, Inc.
Overview
This article guides the user through design of a basic single state narrow-band power amplifier using a Modelithics developed non-linear LDMOS transistor model and Agilent Genesys software. Recommended procedures are advanced and issues related to "closing-the-loop" between simulated and measured results are explained and implemented. Among the issues affecting hybrid MIC PA designs are mounting parasitic inductances and the potential sensitivity of the final PA efficiency, gain and power to tolerace issues affecting matching realization for a a power transitor exhibiting low impedance near the left side of the Smith Chart. Two different designs were realized in parallel, both exhibiting power levels in the 5 to 7 W range and efficiencies in the 50 to 62 % range at 900 MHz. This note focuses on demonstration of a suggested simulation-based PA design methodology, combined with an awareness of overall issues that may need to be addressed carefully for improved design predictability and first-pass success for PCB-based microwave circuits.
Click Here To Download:•Application Note: Simulation Procedures And Considerations For Power Amplifier Design In Agilent Genesys
