Accurate Field Distrubution Models for RFID Applications Using Hybrid Computational Electromagnetics Technquies

摘要

An approach to hybridization, linking the Method of Moments, the Finite Difference Time Domain method and sub-gridded FDTD regions is presented. This hybrid method is capable of analysing a system of multiple discrete regions by employing the Principle of Equivalent Sources to excite the coupling surfaces and then using a linear field-interpolation method. The method is developed to suit RFID model analysis for both near- and far-field applications. To develop the approach and test its validity, some examples are given in which the results are shown to compare well with other available data.