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Coplanar Waveguide Bandpass Filter

Application ID: 12099

Coplanar waveguide (CPW) bandpass filters can be designed using interdigital capacitors (IDCs) and short-circuited stub inductors (SSIs). This is a very efficient manufacturing method for producing bandpass filters, which can readily be implemented on a GaAs wafer.

The Coplanar Waveguide Bandpass Filter tutorial model presents a design that is compact in relation to its resonant frequency and provides a relatively high Q factor as compared to capacitively coupled microstrip line model designs. It uses the Multielement uniform lumped port feature of the COMSOL Multiphysics software in order to excite and/or terminate each element of the respective ports equally.

This model is included as an example in the following products:

RF Module

The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.