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Coaxial to Waveguide Coupling

Application ID: 1863


Feeding a waveguide from a coaxial cable is a straightforward way to achieve electromagnetic waves inside a waveguide. Due to its small size and circular shape, the cable contributes significantly to the overall size of the problem. It is therefore necessary to keep the cable as short as possible.

This model shows how to use pairs and the Port boundary conditions to feed a rectangular waveguide. The port condition can be placed directly at the surface where the cable enters the waveguide, and only a short cable part, modeled as a perfectly matched layer (PML), is subsequently necessary.

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 Descrição dos Produtos 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.