Author(s)

Alexander G. Yushchenko, Dovlet S. Mamedov, Denis M. Zaytsev

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The paper presents an original physical points of an intellectual CAD system designing for three-tier wide band waveguide-dielectric filters with LM modes. On the basis of formalized physical knowledge about the behavior of coupled resonators, the CAD system analyses electromagnetic signal passing through a filter structure and makes decisions gradually approaching the optimal filter design through a series of changes in its geometry. From a mathematical point of view, this approach is an alternative to well-known optimization methods and is also very promising for solving the problem of finding a global extremum of an objective function. We also include the filter optimization results obtained with the CAD system for the frequency range 23 - 81 GHz, band widths up to 30% and insertion losses less than 0.5 dB.

Intellectual CAD; Waveguide-Dielectric Filters; Expert System; Optimization Methods; Wide Band Pass

A. Yushchenko, D. Mamedov and D. Zaytsev, "Intellectual CAD for Three-Tier Wide Band WDR Filters," Wireless Engineering and Technology, Vol. 3 No. 1, 2012, pp. 30-35. doi: 10.4236/wet.2012.31005.