Modeling of Magnetoelectric Antennas for Circuit Simulations in Magnetic Sensing Applications

Abstract

This paper introduces a behavioral circuit model for a magnetoelectric (ME) antenna, which is a novel miniaturized device with applications in low-power sensing. To facilitate the design of integrated circuits interfaced to the antenna, its model accounts for the amplitude modulation behavior observed during measurements of the nanoelectromechanical system (NEMS) device when subjected to an AC magnetic field and a DC biasing field. We propose a dynamic model for transient simulations, and show that the model characteristics match the experimentally obtained behavior of the ME antenna. As an example, the model is demonstrated through simulations of a sensor circuit for magnetic fields in the 282 microTesla to 28 milliTesla range.