Stripline

rfnetwork.elements.Stripline

class rfnetwork.elements.Stripline(w, b, er, t=0.0013, df=0, loss=0, frequency=0, length=None, shunt=False)

Bases: Line

Stripline with balanced substrate.

Parameters

wfloat: width of stripline trace in inches
bfloat: substrate thickness in inches (with line in the center).
tfloat, optional: copper thickness in inches, defaults to 1oz copper (1.3 mils). Does not affect loss.
dffloat | list, optional: Dissipation factor of substrate material, or dielectric loss tangent.
lossfloat | list, optional: Total loss, (dielectric + conductor) losses, in dB per inch. Ignored if df is provided.
frequencylist, optional: Array of frequencies in Hz for er, df, and loss if they are provided as lists.
lengthfloat, optional: Length of line segment in inches.
shuntbool, default: False: if True, port 2 is connected to ground and port 1 is transformed into a 2-port component that can be cascaded with other components.

>>> import rfnetwork as rfn
>>> sl = rfn.elements.Stripline(
...    w=0.008,
...    b=0.010,
...    er=3.0,
...    loss=0.5,
...    length=0.5
... )

Evaluate s21 to get the loss of the line,

>>> s21 = sl.evaluate(10e9)["s"].sel(b=2, a=1)
>>> rfn.conv.db20_lin(s21)
ldarray([-0.32187157])...

Methods

Returns characteristic impedance and dielectric constant over frequency.

Attributes