How to import a GDS

[soliton37]

Hi,
how can I import a gds file with a minimum of elements (no layer description, color, position, ...) ?

[amichel0205]

How to import a GDS in HFSS

You will find two simple scripts below.

With the first script you will have to specify:

• path to HFSS project
• HFSS project name
• HFSS Design name
• Path to GDS file
• a list containing GDS layer number

In this script you will not be able to specify layer thickness, elevation and color.

import pyaedt
import os

# Path to the aedt project directory
aedtpath = r'C:\Data\Support\HFSS3D'
# aedt file name
aedtfilename = "GDS_Import"
# aedt filename full path
aedtfilepath = os.path.join(aedtpath, aedtfilename)
#  gds file full path
gds_path = r"C:\Data\GDS_Test.gds"
# list of gds number
gds_number = [1, 2, 3, 4, 5, 6]

# Version of AEDT to be used "2023.2" for 2023R2, "2024.1" for 2024R1
version = "2023.2"

hfss = pyaedt.Hfss(projectname=aedtfilepath, designname="HFSSDesign1", specified_version=version)

layermap = ["NAME:LayerMap"]

for i in gds_number:
    layername = "signal" + str(i)
    layermap.append(["NAME:LayerMapInfo", "LayerNum:=", i, "DestLayer:=", layername, "layer_type:=", "signal"])

# ImportMethod: 0 for script, 1for Parasolid
hfss.oeditor.ImportGDSII(
    [
        "NAME:options",
        "FileName:=", gds_path,
        "FlattenHierarchy:=", True,
        "ImportMethod:=", 1,
        layermap,
    ])

hfss.save_project()
hfss.release_desktop(close_projects=False, close_desktop=False)`

With the second script you will have to specify:

• path to HFSS project
• HFSS project name
• HFSS Design name
• Path to GDS file
• a list containing GDS layer number
• a list containing elevation for each GDS layer
• a list containing thickness for each GDS layer
• a list containing color for each GDS layer

In this script you will be able to specify layer thickness, elevation and color.

import pyaedt
import os

# Path to the aedt project directory
aedtpath = r'C:\Data\Support\ST\Tours\HFSS3D'
# aedt file name
aedtfilename = "GDS_Import"
# aedt filename full path
aedtfilepath = os.path.join(aedtpath, aedtfilename)
#  gds file full path
gds_path = r"C:\Data\Support\ST\Tours\GDS\PYAEDT_ex1.gds"
# list of gds number
gds_number = [1, 2, 3, 4, 5, 6]
# list of elevation for each GDS layer order must be the same as in gds_number list
elevation = [1E-4, 1.5E-4, 2E-4, 2.6E-4, 3.1E-4, 0]
# list of thickness for each GDS layer order must be the same as in gds_number list
thickness = [2E-05, 1.5E-05, 1E-05, 1E-05, 1E-05, 0]
# list of color for each GDS layer order must be the same as in gds_number list
color = ["yellow", "green", "aquamarine", "cyan", "steel blue", "gray"]


# Version of AEDT to be used "2023.2" for 2023R2, "2024.1" for 2024R1
version = "2023.2"

hfss = pyaedt.Hfss(projectname=aedtfilepath, designname="HFSSDesign1", specified_version=version)

if (len(gds_number) != len(elevation) or len(gds_number) != len(thickness) or len(gds_number) != len(color)):
    hfss.logger.error("All list: gds_number, elevation, thickness, color must have the same number of element")
else:

    layermap = ["NAME:LayerMap"]
    ordermap = []
    j = 0
    for i in gds_number:
        layername = "signal" + str(i)
        layermap.append(["NAME:LayerMapInfo", "LayerNum:=", i, "DestLayer:=", layername, "layer_type:=", "signal"])
        ordermap1 = ["entry:=", ["order:=", j, "layer:=", layername, "LayerNumber:=", i, "Thickness:=",
                                 thickness[j], "Elevation:=", elevation[j], "Color:=", "color"]]
        ordermap = ordermap + ordermap1
        j = j + 1

    # ImportMethod: 0 for script, 1for Parasolid
    hfss.oeditor.ImportGDSII(
        [
            "NAME:options",
            "FileName:=", gds_path,
            "FlattenHierarchy:=", True,
            "ImportMethod:=", 0,
            layermap,
            "OrderMap:=", ordermap,
        ])

    hfss.save_project()
hfss.release_desktop(close_projects=False, close_desktop=False)

[amichel0205]

A pyaedt function for import GDSII in HFSS will be implmented and available in further pyaedt version