EMIT: antenna

This example shows how you can use PyAEDT to create a project in EMIT for the simulation of an antenna.

Perform required inputs

Perform required imports.

sphinx_gallery_thumbnail_path = “Resources/emit_simple_cosite.png”

import pyaedt
import pyaedt.emit_core.EmitConstants as econsts

Set non-graphical mode

Set non-graphical mode. "PYAEDT_NON_GRAPHICAL" is needed to generate documentation only. You can set non_graphical either to True or False. The NewThread Boolean variable defines whether to create a new instance of AEDT or try to connect to existing instance of it if one is available.

non_graphical = False
NewThread = True
desktop_version = "2023.1"

Launch AEDT with EMIT

Launch AEDT with EMIT. The Desktop class initializes AEDT and starts it on the specified version and in the specified graphical mode.

d = pyaedt.launch_desktop(desktop_version, non_graphical, NewThread)
aedtapp = pyaedt.Emit(pyaedt.generate_unique_project_name())

Create and connect EMIT components

Create three radios and connect an antenna to each one.

rad1 = aedtapp.modeler.components.create_component("New Radio")
ant1 = aedtapp.modeler.components.create_component("Antenna")
if rad1 and ant1:
    ant1.move_and_connect_to(rad1)

# Convenience method to create a radio and antenna connected together
rad2, ant2 = aedtapp.modeler.components.create_radio_antenna("GPS Receiver")
rad3, ant3 = aedtapp.modeler.components.create_radio_antenna("Bluetooth Low Energy (LE)", "Bluetooth")

Define coupling among RF systems

Define the coupling among the RF systems. This portion of the EMIT API is not yet implemented.

Run EMIT simulation

Run the EMIT simulation.

This part of the example requires Ansys AEDT 2023 R2.

if desktop_version > "2023.1":
    rev = aedtapp.results.analyze()
    modeRx = econsts.tx_rx_mode().rx
    modeTx = econsts.tx_rx_mode().tx
    modeEmi = econsts.result_type().emi
    rx_bands = rev.get_band_names(rad2.name, modeRx)
    tx_bands = rev.get_band_names(rad3.name, modeTx)
    domain = aedtapp.results.interaction_domain()
    domain.set_receiver(rad2.name, rx_bands[0], -1)
    domain.set_interferer(rad3.name,tx_bands[0])
    interaction = rev.run(domain)
    worst = interaction.get_worst_instance(modeEmi)
    if worst.has_valid_values():
        emi = worst.get_value(modeEmi)
        print("Worst case interference is: {} dB".format(emi))

Save project and close AEDT

After the simulation completes, you can close AEDT or release it using the pyaedt.Desktop.force_close_desktop() method. All methods provide for saving the project before closing.

aedtapp.save_project()
aedtapp.release_desktop(close_projects=True, close_desktop=True)

True