Abstract
A rigorous framework and an efficient numerical implementation for computing leaky-wave poles for grounded inhomogeneous dielectric (multi-) layers are presented. The pertinent transverse-resonance (eigenvalue) equations, obtained by power-series solution of the related Sturm–Liouville problems, are solved by means of a Padé-approximant-based root-finding procedure. Numerical simulations show that very accurate results (ten decimal figures, on average) are usually obtained with a mild computational and programming effort, over a reasonably wide spectral range. ©2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 135–140, 2000.
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