Combination of ultra-wide band characteristic basis function method and asymptotic waveform evaluation method in mom solution

A novel technique which combines the ultra-wide band characteristic basis function method (UCBFM) and the adaptive multi-point expansion algorithm for asymptotic waveform evaluation (AWE) method is proposed. The UCBFM and the AWE method are two kinds of model order reduction (MOR) methods, and their proposed combination can be applied for fast evaluation of wide band scattering problems. In the proposed approach, ultra-wide band characteristic basis functions (UCBFs) is solved according to the highest frequency in the range of interest, and the adaptive multi-point expansion algorithm for AWE is based on a simple binary search algorithm. Provided numerical results validate the proposed method, and suggest that it has a high efficiency.