Reducing the computational requirements of time-reversal device optimizations

Time-reversal simulations using conventional numerical algorithms provide the basis for a simple component optimization procedure. However, the computational requirements of the approach can become excessive, requiring the recording of the complete field time histories on a surface surrounding the problem space. In this work temporal, spatial and modal filtering methods are employed to significantly reduce the computational resources demanded by the time-reversal process. The design of a number of WR90 (X-band) waveguide components is used to quantify the balance between the computational efficiency gains and deterioration in the final design quality. Copyright © 2009 John Wiley & Sons, Ltd.