New modeling technique unlocks potential of materials that change properties in real time
Researchers have developed a practical computational method to design and simulate materials whose electrical properties shift dynamically—opening new possibilities for wireless devices, antennas, and electromagnetic shielding. The breakthrough could accelerate commercialization of time-varying materials by making them easier to engineer and predict in real-world applications.
Originaltitel: Partial element equivalent circuit modeling of distributed and lumped time-varying dielectric phenomena
<p>Time-varying (TV) materials have recently gained considerable attention for their ability to manipulate electromagnetic (EM) waves and improve the performance beyond the limits of conventional time-invariant materials. In addition, distributed TV capacitors are becoming more attractive to achieve particular effects. This work presents a systematic approach to modeling TV dielectrics by incorporating TV capacitors in the framework of the partial element equivalent circuit (PEEC) method. Thus, the standard formulation of the PEEC method is modified to include TV dielectrics and lumped elements for general 3D geometries directly in the time domain (TD). It is shown that this is possible through TV capacitances and voltage-controlled current sources. Four numerical examples validate the proposed approach.</p>