FURI | Fall 2023

Closed-Loop Control for High Frequency Variable Inductor System

Designing variable passive devices comes with a set of challenges regarding parasitic effects. By saturating magnetic materials, the permeability can be modulated to achieve dynamic control of inductance based on AC inputs. However, measuring voltages and currents at the AC input risks the fidelity of the signal yet is necessary to induce a DC current for a specific inductance value. This project aims to develop a sensing apparatus for a compatible embedded system, and design a closed-loop feedback mechanism to regulate the inductance of the magnetic material. This is critical for applications such as power amplifier testing in plasma environments.