FULL-WAVE ANALYSIS OF MICROSTRIP FLOATING LINE STRUCTURES BY WAVELET EXPANSION METHOD

A full wave analysis of microstrip floating line structures by wavelet expansion method is presented, The surface integral equation develope d from a dyadic Green's function is solved by Galerkin's method, with the integral kernel and the unknown current expanded in terms of ortho gonal wavelets, Using the orthonormal wavelets (and scaling functions) with compact support as basis functions and weighting functions, the integral equation is converted into a set of linear algebraic equation s, with the matrices nearly diagonal or block-diagonal due to the loca lization, orthogonality, and cancellation properties of the orthogonal wavelets, Limitations inherited in the traditional orthogonal basis s ystems are released: The problem-dependent normal modes have been repl aced by the problem-independent wavelets, preserving the orthogonality ; the trade-off between orthogonality and continuity (e. g. subsection al basis functions including pulse functions, roof-top functions, piec ewise sinusoidal functions, etc.) is well balanced by the orthogonal w avelets, Numerical results are compared with measurements and previous published data with good agreement.