DESCRIPTION: Creates a scattering wave port source in [[EM.Picasso]] or [[EM.Libera]]. If the wave port 'label' already exists, its properties are modified.
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====waveguide_design====
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SYNTAX: waveguide_design({{ArgTypeReal}} er, {{ArgTypeReal}} freq_hertz)
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EXAMPLE: ''waveguide_design(1.0,2e9)''
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DESCRIPTION: Computes and returns the minimum larger dimension (in meters) of the cross section of a hollow rectangular waveguide above cutoff with a material filling of relative permittivity er at an operating frequency of freq_hertz.
====waveguide_src====