coupled_ustrip_impedance

rfnetwork.utils.coupled_ustrip_impedance

rfnetwork.utils.coupled_ustrip_impedance(w, h, s, er, frequency=1000000000.0, t=0.0013)

Coupled microstrip line impedance for odd and even modes. See section 3.8.2 in [1], but be aware there are typos. Another good reference with the same equations: https://qucs.github.io/tech/node77.html.

Return type:

tuple

Parameters

wfloat, optional

Width of microstrip traces in inches.

hfloat

Substrate thickness in inches

sfloat

trace spacing in inches

erfloat

Dielectric constant of substrate.

frequencyfloat | list, default: 1 GHz

frequencies in Hz.

tfloat, optional

Copper thickness in inches, defaults to 1oz copper (1.3 mils).

Returns

Zofloat | np.ndarray

Odd mode impedance

Zefloat | np.ndarray

Even mode impedance

References

[1] P. Pramanick and P. Bhartia, Modern RF and Microwave Filter Design. Norwood, MA, USA: Artech House, 2016.