Accelerating Electromagnetic Simulation with an Adaptive Frequency Sweep Toolbox Developed for MATLAB

Abstract

This paper introduces a freely accessible adaptive frequency sweep toolbox developed for MATLAB R2025a. The primary goal of this tool is to speed up electromagnetic simulations by generating accurate S-parameter data. Two types of approaches have been implemented in this toolbox, semiadaptive and fully adaptive. The fundamental theory behind these algorithms is based on the Loewner matrix method. This tool chooses the minimum number of frequency points adaptively based on the system response. This work also evaluates the efficiency of the developed toolbox in comparison to the MATLAB R2025a frequency sweep object. The results indicate that our toolbox produces accurate S-parameter data while significantly accelerating the electromagnetic simulation.