skrf.media.rectangularWaveguide.RectangularWaveguide.f_cutoff

property RectangularWaveguide.f_cutoff: Union[numbers.Number, Sequence[numbers.Number], numpy.ndarray]

cutoff frequency for this mode.

\[f_c = \frac{v}{2 \pi} \sqrt { {m \frac{\pi}{a}}^2 + {n \frac{\pi}{b}}^2}\]

where \(v= 1/\sqrt{\varepsilon \mu}\).