skrf.media.circularWaveguide.CircularWaveguide.kc

property CircularWaveguide.kc: Number | Sequence[Number] | ndarray

Cut-off wave number.

Defined as

\[k_c = \frac{u_{mn}}{R}\]

where R is the radius of the waveguide, and u_mn is:

• the n-th root of the m-th Bessel function for ‘tm’ mode

• the n-th root of the Derivative of the m-th Bessel function for ‘te’ mode.

Returns:

kc – cut-off wavenumber

Return type:

number