標題: Impedance matrix compression using an effective quadrature filter
作者: Huang, JM
Leou, JL
Jeng, SK
Tarng, JH
電信工程研究所
Institute of Communications Engineering
公開日期: 1-八月-2000
摘要: An effective quadrature mirror filter (QMF) proposed by Vaidyanathan has been used to solve 2D scattering problems. QMF has been popular for some time in digital signal processing, under the names of multirate sampling, wavelets, etc. In this work, the impulse response coefficients of QMF were used to construct the wavelet transform matrix. Using the matrix to transform the impedance matrices of 2D scatterers produces highly sparse moment matrices that can be solved efficiently. Such a presentation provides better sparsity than the celebrated and widely used Daubechies wavelets. These QMF coefficients are dependent on the filter parameters such as transition bandwidth and filter length. It was found that the sharper the transition bandwidth, the greater the reduction in nonzero elements of the impedance matrix. It also can be applied in the wavelet packet algorithm to further sparsify the impedance matrix. Numerical examples are given to demonstrate the effectiveness and validity of our finding.
URI: http://dx.doi.org/10.1049/ip-map:20000361
http://hdl.handle.net/11536/30358
ISSN: 1350-2417
DOI: 10.1049/ip-map:20000361
期刊: IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION
Volume: 147
Issue: 4
起始頁: 255
結束頁: 260
顯示於類別:期刊論文


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  1. 000088880700002.pdf