Analysis of integrated millimeter-wave and submillimeter-wave waveguides using orthonormal wavelet expansions

• Published in: IEEE transactions on microwave theory and techniques 1994-12, Vol.42 (12), p.2412-2422
• Main Authors: Sabetfakhri, K., Katehi, L.P.B.
• Format: Article
• Language: English
• Subjects: Applied sciences; Character generation; Circuit properties; Dielectrics; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Integral equations; Metallization; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Millimeter wave technology; Moment methods; Planar waveguides; Transmission line matrix methods; Waveguide theory; Wavelet analysis
• ISSN: 0018-9480; 1557-9670
• DOI: 10.1109/22.339775

A mixed spectral/space-domain integral formulation for the analysis of integrated planar dielectric waveguide structures with printed metallized sections is presented which exploits the newly developed multiresolution expansions based on the concepts of orthonormal wavelet theory. The proposed expansion basis, which is highly localized in both space and spectral domains, is entirely generated by the dilation and shifting of two closely related characteristic functions. It is demonstrated that using this type of expansion in the moment method solution of the integral equations leads to very sparsely populated moment matrices after performing a threshold procedure. Extensive numerical examples are provided for a variety of practical waveguide configurations.< >