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dc.contributor.authorHuang, JMen_US
dc.contributor.authorLeou, JLen_US
dc.contributor.authorJeng, SKen_US
dc.contributor.authorTarng, JHen_US
dc.date.accessioned2014-12-08T15:44:58Z-
dc.date.available2014-12-08T15:44:58Z-
dc.date.issued2000-08-01en_US
dc.identifier.issn1350-2417en_US
dc.identifier.urihttp://dx.doi.org/10.1049/ip-map:20000361en_US
dc.identifier.urihttp://hdl.handle.net/11536/30358-
dc.description.abstractAn 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.en_US
dc.language.isoen_USen_US
dc.titleImpedance matrix compression using an effective quadrature filteren_US
dc.typeArticleen_US
dc.identifier.doi10.1049/ip-map:20000361en_US
dc.identifier.journalIEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATIONen_US
dc.citation.volume147en_US
dc.citation.issue4en_US
dc.citation.spage255en_US
dc.citation.epage260en_US
dc.contributor.department電信工程研究所zh_TW
dc.contributor.departmentInstitute of Communications Engineeringen_US
dc.identifier.wosnumberWOS:000088880700002-
dc.citation.woscount1-
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