Lumped Element Low-Pass Filter Design And Optimization Using Agilent Genesys Software

By Modelithics, Inc.

This article covers the design and optimization of a 5th order lumped element low-pass filter using the Modelithics CLR library in concert with Agilent Genesys software. A demonstration circuit was fabricated and measured using a 16-mil thick Rogers 4003 substrate. The design process began with a conventional Chebyshev implementation in Genesys using ideal inductor and capacitor models. The simulation was then refined by the addition of Modelithics CLR models and careful modeling of the transmission line connections.