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A fullwave CAD tool for waveguide components using a high speed direct optimizer

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3 Author(s)
Alessandri, F. ; Istituto di Elettronica, Perugia Univ., Italy ; Dionigi, M. ; Sorrentino, R.

An extremely efficient optimization tool, where the fullwave mode matching simulator is driven by a quasi-Newton optimizer using the adjoint network method, has been developed for the CAD of a class of rectangular waveguide components. This includes filters, phase shifters, branch guide couplers, etc., with step in either the E- or H-plane. With respect to the conventional finite difference computation of the derivatives, a speedup factor of more than 10 times is easily achieved

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:43 ,  Issue: 9 )