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Multi-zone simulation with SIwave#

This example shows how to simulate multiple zones with SIwave.

Keywords: Circuit, multi-zone.

Perform imports and define constants#

Perform required imports, which includes importing a section.

[1]:

import os.path
import tempfile
import time

import ansys.aedt.core
from ansys.aedt.core import Circuit, Edb

Define constants.

[2]:

EDB_VERSION = "2024.2"

Create temporary directory#

Create a temporary directory where downloaded data or dumped data can be stored. If you’d like to retrieve the project data for subsequent use, the temporary folder name is given by temp_folder.name.

[3]:

temp_folder = tempfile.TemporaryDirectory(suffix=".ansys")

Download EDB folder#

[4]:

edb_file = ansys.aedt.core.downloads.download_file(
    directory="edb/siwave_multi_zones.aedb", destination=temp_folder.name
)
work_folder = os.path.join(temp_folder.name, "work")
aedt_file = os.path.splitext(edb_file)[0] + ".aedt"
circuit_project_file = os.path.join(temp_folder.name, "multizone_clipped_circuit.aedt")
print(edb_file)

PyAEDT WARNING: Argument `directory` is deprecated for method `download_file`; use `source` instead.
C:\Users\ansys\AppData\Local\Temp\tmp4byxkqko.ansys\edb/siwave_multi_zones.aedb

Set AEDT version#

[5]:

edb_version = EDB_VERSION

Define ground net#

Define the common reference net used across all subdesigns, which is mandatory for this workflow.

[6]:

common_reference_net = "GND"

Load project#

Check if the AEDT file exists and remove it to allow EDB loading. Then, load the initial EDB file.

[7]:

if os.path.isfile(aedt_file):
    os.remove(aedt_file)
edb = Edb(edbversion=edb_version, edbpath=edb_file)

PyAEDT INFO: Logger is initialized in EDB.
PyAEDT INFO: legacy v0.31.0
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: Database siwave_multi_zones.aedb Opened in 2024.2
PyAEDT INFO: Cell EMDesign1 Opened
PyAEDT INFO: Builder was initialized.
PyAEDT INFO: EDB initialized.

Copy project zones#

Copy project zone into the subproject.

[8]:

edb_zones = edb.copy_zones(working_directory=work_folder)

Split zones#

Clip subdesigns along with corresponding zone definitions and create a port of clipped signal traces.

[9]:

defined_ports, project_connexions = edb.cutout_multizone_layout(
    edb_zones, common_reference_net
)

PyAEDT INFO: Logger is initialized in EDB.
PyAEDT INFO: legacy v0.31.0
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: Database 60_siwave_multi_zones.aedb Opened in 2024.2
PyAEDT INFO: Cell EMDesign1 Opened
PyAEDT INFO: Builder was initialized.
PyAEDT INFO: EDB initialized.
PyAEDT INFO: Cutout Multithread started.
PyAEDT INFO: Net clean up Elapsed time: 0m 0sec
PyAEDT INFO: Extent Creation Elapsed time: 0m 0sec
PyAEDT INFO: 4 Padstack Instances deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 8 Primitives deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 2 components deleted
PyAEDT INFO: Cutout completed. Elapsed time: 0m 0sec
PyAEDT INFO: Cutout Multithread started.
PyAEDT INFO: Net clean up Elapsed time: 0m 0sec
PyAEDT INFO: Extent Creation Elapsed time: 0m 0sec
PyAEDT INFO: 0 Padstack Instances deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 6 Primitives deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 0 components deleted
PyAEDT INFO: Cutout completed. Elapsed time: 0m 0sec
PyAEDT INFO: Terminal B2B_SIGN_71_0ZJ7OV created
PyAEDT INFO: Port B2B_SIGN_71_0ZJ7OV created
PyAEDT INFO: Terminal B2B_SIGP_72_VWY7RO created
PyAEDT INFO: Port B2B_SIGP_72_VWY7RO created
PyAEDT INFO: EDB file save time: 0.00ms
PyAEDT INFO: EDB file release time: 0.00ms
PyAEDT INFO: Logger is initialized in EDB.
PyAEDT INFO: legacy v0.31.0
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: Database 62_siwave_multi_zones.aedb Opened in 2024.2
PyAEDT INFO: Cell EMDesign1 Opened
PyAEDT INFO: Builder was initialized.
PyAEDT INFO: EDB initialized.
PyAEDT INFO: Cutout Multithread started.
PyAEDT INFO: Net clean up Elapsed time: 0m 0sec
PyAEDT INFO: Extent Creation Elapsed time: 0m 0sec
PyAEDT INFO: 8 Padstack Instances deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 8 Primitives deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 4 components deleted
PyAEDT INFO: Cutout completed. Elapsed time: 0m 0sec
PyAEDT INFO: Cutout Multithread started.
PyAEDT INFO: Net clean up Elapsed time: 0m 0sec
PyAEDT INFO: Extent Creation Elapsed time: 0m 0sec
PyAEDT INFO: 0 Padstack Instances deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 3 Primitives deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 0 components deleted
PyAEDT INFO: Cutout completed. Elapsed time: 0m 0sec
PyAEDT INFO: Terminal B2B_SIGN_70_U0LGNN created
PyAEDT INFO: Port B2B_SIGN_70_U0LGNN created
PyAEDT INFO: Terminal B2B_SIGN_70_RFDODG created
PyAEDT INFO: Port B2B_SIGN_70_RFDODG created
PyAEDT INFO: Terminal B2B_SIGP_69_XWZG8M created
PyAEDT INFO: Port B2B_SIGP_69_XWZG8M created
PyAEDT INFO: Terminal B2B_SIGP_69_4UDS3M created
PyAEDT INFO: Port B2B_SIGP_69_4UDS3M created
PyAEDT INFO: EDB file save time: 0.00ms
PyAEDT INFO: EDB file release time: 0.00ms
PyAEDT INFO: Logger is initialized in EDB.
PyAEDT INFO: legacy v0.31.0
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: Database 64_siwave_multi_zones.aedb Opened in 2024.2
PyAEDT INFO: Cell EMDesign1 Opened
PyAEDT INFO: Builder was initialized.
PyAEDT INFO: EDB initialized.
PyAEDT INFO: Cutout Multithread started.
PyAEDT INFO: Net clean up Elapsed time: 0m 0sec
PyAEDT INFO: Extent Creation Elapsed time: 0m 0sec
PyAEDT INFO: 4 Padstack Instances deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 8 Primitives deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 2 components deleted
PyAEDT INFO: Cutout completed. Elapsed time: 0m 0sec
PyAEDT INFO: Cutout Multithread started.
PyAEDT INFO: Net clean up Elapsed time: 0m 0sec
PyAEDT INFO: Extent Creation Elapsed time: 0m 0sec
PyAEDT INFO: 0 Padstack Instances deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 3 Primitives deleted. Elapsed time: 0m 0sec
PyAEDT INFO: 0 components deleted
PyAEDT INFO: Cutout completed. Elapsed time: 0m 0sec
PyAEDT INFO: Terminal B2B_SIGN_70_QPZ3DH created
PyAEDT INFO: Port B2B_SIGN_70_QPZ3DH created
PyAEDT INFO: Terminal B2B_SIGP_69_JDBKOR created
PyAEDT INFO: Port B2B_SIGP_69_JDBKOR created
PyAEDT INFO: EDB file save time: 0.00ms
PyAEDT INFO: EDB file release time: 0.00ms

Create circuit#

Create circuit design, import all subprojects as EM models, and connect all corresponding pins in the circuit.

[10]:

circuit = Circuit(version=edb_version, project=circuit_project_file)
circuit.connect_circuit_models_from_multi_zone_cutout(
    project_connections=project_connexions,
    edb_zones_dict=edb_zones,
    ports=defined_ports,
    model_inc=70,
)

PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: PyAEDT version 0.12.dev0.
PyAEDT INFO: Initializing new Desktop session.
PyAEDT INFO: Log on console is enabled.
PyAEDT INFO: Log on file C:\Users\ansys\AppData\Local\Temp\pyaedt_ansys_3b44b761-3d06-421d-bc84-49a36e912c1c.log is enabled.
PyAEDT INFO: Log on AEDT is enabled.
PyAEDT INFO: Debug logger is disabled. PyAEDT methods will not be logged.
PyAEDT INFO: Launching PyAEDT with gRPC plugin.
PyAEDT INFO: New AEDT session is starting on gRPC port 62901
PyAEDT INFO: AEDT installation Path C:\Program Files\AnsysEM\v242\Win64
PyAEDT INFO: Ansoft.ElectronicsDesktop.2024.2 version started with process ID 7524.
PyAEDT INFO: Project multizone_clipped_circuit has been created.
PyAEDT INFO: No design is present. Inserting a new design.
PyAEDT INFO: Added design 'Circuit Design_F3L' of type Circuit Design.
PyAEDT INFO: Aedt Objects correctly read
PyAEDT INFO: ModelerCircuit class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: ModelerNexxim class has been initialized!
PyAEDT INFO: Modeler class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: PyAEDT version 0.12.dev0.
PyAEDT INFO: Returning found Desktop session with PID 7524!
PyAEDT INFO: EDB folder C:\Users\ansys\AppData\Local\Temp\tmp4byxkqko.ansys\work\60_siwave_multi_zones.aedb has been imported to project 60_siwave_multi_zones
PyAEDT INFO: Active Design set to 0;60_siwave_multi_zones
PyAEDT INFO: Aedt Objects correctly read
PyAEDT INFO: Loading Modeler.
PyAEDT INFO: Modeler loaded.
PyAEDT INFO: EDB loaded.
PyAEDT INFO: Layers loaded.
PyAEDT INFO: Primitives loaded.
PyAEDT INFO: Modeler class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Closing the AEDT Project 60_siwave_multi_zones
PyAEDT INFO: Project 60_siwave_multi_zones closed correctly
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: PyAEDT version 0.12.dev0.
PyAEDT INFO: Returning found Desktop session with PID 7524!
PyAEDT INFO: EDB folder C:\Users\ansys\AppData\Local\Temp\tmp4byxkqko.ansys\work\62_siwave_multi_zones.aedb has been imported to project 62_siwave_multi_zones
PyAEDT INFO: Active Design set to 0;62_siwave_multi_zones
PyAEDT INFO: Aedt Objects correctly read
PyAEDT INFO: Loading Modeler.
PyAEDT INFO: Modeler loaded.
PyAEDT INFO: EDB loaded.
PyAEDT INFO: Layers loaded.
PyAEDT INFO: Primitives loaded.
PyAEDT INFO: Modeler class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Closing the AEDT Project 62_siwave_multi_zones
PyAEDT INFO: Project 62_siwave_multi_zones closed correctly
PyAEDT INFO: Python version 3.10.11 (tags/v3.10.11:7d4cc5a, Apr  5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)]
PyAEDT INFO: PyAEDT version 0.12.dev0.
PyAEDT INFO: Returning found Desktop session with PID 7524!
PyAEDT INFO: EDB folder C:\Users\ansys\AppData\Local\Temp\tmp4byxkqko.ansys\work\64_siwave_multi_zones.aedb has been imported to project 64_siwave_multi_zones
PyAEDT INFO: Active Design set to 0;64_siwave_multi_zones
PyAEDT INFO: Aedt Objects correctly read
PyAEDT INFO: Loading Modeler.
PyAEDT INFO: Modeler loaded.
PyAEDT INFO: EDB loaded.
PyAEDT INFO: Layers loaded.
PyAEDT INFO: Primitives loaded.
PyAEDT INFO: Modeler class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Closing the AEDT Project 64_siwave_multi_zones
PyAEDT INFO: Project 64_siwave_multi_zones closed correctly
PyAEDT INFO: Parsing C:/Users/ansys/AppData/Local/Temp/tmp4byxkqko.ansys/multizone_clipped_circuit.aedt.
PyAEDT INFO: File C:/Users/ansys/AppData/Local/Temp/tmp4byxkqko.ansys/multizone_clipped_circuit.aedt correctly loaded. Elapsed time: 0m 0sec
PyAEDT INFO: aedt file load time 0.0156252384185791
PyAEDT INFO: Project multizone_clipped_circuit Saved correctly

[10]:

True

Set up simulation#

Add Nexxim LNA simulation setup.

[11]:

circuit_setup = circuit.create_setup("Pyedt_LNA")

Add frequency sweep#

Add a frequency sweep from 0 GHt to 20 GHz with a 10 NHz frequency step.

[12]:

circuit_setup.props["SweepDefinition"]["Data"] = "LIN {} {} {}".format(
    "0GHz", "20GHz", "10MHz"
)

Start simulation#

Analyze all SIwave projects and solve the circuit.

[13]:

circuit.analyze()

PyAEDT INFO: Key Desktop/ActiveDSOConfigurations/Circuit Design correctly changed.
PyAEDT INFO: Solving all design setups.
PyAEDT INFO: Key Desktop/ActiveDSOConfigurations/Circuit Design correctly changed.
PyAEDT INFO: Design setup None solved correctly in 0.0h 1.0m 4.0s

[13]:

True

Define differential pairs

[14]:

circuit.set_differential_pair(
    differential_mode="U0",
    assignment="U0.via_38.B2B_SIGP",
    reference="U0.via_39.B2B_SIGN",
)
circuit.set_differential_pair(
    differential_mode="U1",
    assignment="U1.via_32.B2B_SIGP",
    reference="U1.via_33.B2B_SIGN",
)

[14]:

True

Plot results.

[15]:

circuit.post.create_report(
    expressions=["dB(S(U0,U0))", "dB(S(U1,U0))"], context="Differential Pairs"
)

PyAEDT INFO: Post class has been initialized! Elapsed time: 0m 0sec

[15]:

<ansys.aedt.core.visualization.report.standard.Standard at 0x1dfcd882230>

Release AEDT#

Release AEDT and close the example.

[16]:

circuit.save_project()
circuit.release_desktop()
# Wait 3 seconds to allow AEDT to shut down before cleaning the temporary directory.
time.sleep(3)

PyAEDT INFO: Project multizone_clipped_circuit Saved correctly
PyAEDT INFO: Desktop has been released and closed.

Clean up#

All project files are saved in the folder temp_folder.name. If you’ve run this example as a Jupyter notebook, you can retrieve those project files. The following cell removes all temporary files, including the project folder.

[17]:

temp_folder.cleanup()

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