Advanced Neuro-PTF Method for A Four-Pole Waveguide Filter

In the electromagnetic (EM) parametric modeling area, the neuro-transfer function (neuro-TF) is a wide application and significant technology. The coefficients discontinuity issue of the neuro-TF method has been a hot research topic. This paper applies an advanced modeling technique using polynomial transfer functions (neuro-PTF) to a four-order microwave waveguide filter, building a precise parametric model, and improving the discontinuity issue.