`DifferentialTLine`#

class pyedb.libraries.rf_libraries.base_functions.DifferentialTLine(edb: pyedb.Edb, length: float | str = 0.01, width: float | str = 0.0002, spacing: float | str = 0.0002, x0: float | str = 0.0, y0: float | str = 0.0, angle: float | str = 0.0, layer: str = 'TOP', net_p: str = 'P', net_n: str = 'N')#

Edge-coupled differential pair with fully parametric geometry.

Parameters:

lengthfloat, default 10 mm: Total length of the pair.
widthfloat, default 0.2 mm: Width of each individual trace.
spacingfloat, default 0.2 mm: Edge-to-edge separation between the traces.
x0float, default 0: Start x-coordinate (metres).
y0float, default 0: Start y-coordinate (metres).
anglefloat, default 0 rad: Rotation angle of the pair (radians, CCW).
layerstr, default “TOP”: Layer on which the traces are drawn.
net_pstr, default “P”: Net name for the positive trace.
net_nstr, default “N”: Net name for the negative trace.

Examples

>>> diff = DifferentialTLine(Edb("diff.aedb"), length=5e-3, width=0.15e-3, spacing=0.1e-3, angle=math.pi / 4)
>>> traces = diff.create()
>>> f"{diff.diff_impedance:.1f} Ω"
'95.6 Ω'

Overview#

Methods

create

Create the two traces using only parameter strings so the

Properties

diff_impedance

Rough odd-mode impedance estimate for the differential pair.

Attributes

`length`
`width`
`spacing`
`x0`
`y0`
`layer`
`net_p`
`net_n`

Import detail#

from pyedb.libraries.rf_libraries.base_functions import DifferentialTLine

Property detail#

property DifferentialTLine.diff_impedance: float#

Rough odd-mode impedance estimate for the differential pair.

Returns:

float: Differential impedance in Ohms.

Attribute detail#

DifferentialTLine.length#

DifferentialTLine.width#

DifferentialTLine.spacing#

DifferentialTLine.x0#

DifferentialTLine.y0#

DifferentialTLine.layer = 'TOP'#

DifferentialTLine.net_p = 'P'#

DifferentialTLine.net_n = 'N'#

Method detail#

DifferentialTLine.create() → List[float]#

Create the two traces using only parameter strings so the geometry stays fully editable in AEDT.