Microstrip Patch Antenna Synthesizer & PyAEDT Automation

Resonant Frequency & Substrate

Standard Radar & Telecom Bands

One-click python script to launch Ansys HFSS, construct the exact 3D microstrip patch geometry, assign boundary conditions, and set up modal solves.

# NIKOLA RF - Automated Ansys HFSS Synthesis Script via PyAEDT
# Device: Microstrip Rectangular Patch Antenna
# Design Frequency: 5.8 GHz | Substrate: RT/duroid® 5880 (PTFE Glass Microfiber) (eps_r = 2.2)

from pyaedt import Hfss
import os

hfss = Hfss(specified_version="2024.1", designname="Patch_5.8GHz")
hfss.modeler.model_units = "mm"

# Substrate Material Definition
sub_name = "RT_duroid__5880__PTFE_Glass_Microfiber_"
if not hfss.materials.check_if_material_exists(sub_name):
    mat = hfss.materials.add_material(sub_name)
    mat.permittivity = 2.2
    mat.dielectric_loss_tangent = 0.0009

# Parameters
sub_w = 23.48
sub_l = 20.23
sub_h = 0.508
patch_w = 20.43
patch_l = 17.19
inset_y = 6.09

# 1. Create Ground Plane & Substrate Box
gnd = hfss.modeler.create_rectangle(
    origin=["-sub_w/2", "-sub_l/2", 0],
    sizes=["sub_w", "sub_l"],
    name="Ground_Plane",
    plane="XY"
)
hfss.assign_perfecte_to_sheets(gnd, name="Ground_PerfE")

sub = hfss.modeler.create_box(
    origin=["-sub_w/2", "-sub_l/2", 0],
    sizes=["sub_w", "sub_l", "sub_h"],
    name="Dielectric_Substrate",
    material=sub_name
)

# 2. Radiating Patch Element
patch = hfss.modeler.create_rectangle(
    origin=["-patch_w/2", "-patch_l/2", "sub_h"],
    sizes=["patch_w", "patch_l"],
    name="Radiating_Patch",
    plane="XY"
)
hfss.assign_perfecte_to_sheets(patch, name="Patch_PerfE")

# 3. Setup Modal Analysis Setup & Frequency Sweep
setup = hfss.create_setup(name="Setup_5.8GHz", setup_type="HFSSDrivenModal")
setup.props["Frequency"] = "5.8GHz"
setup.props["MaximumPasses"] = 12
setup.props["MaxDeltaS"] = 0.02

hfss.create_frequency_sweep(
    setupname=setup.name,
    unit="GHz",
    freqstart=4.64,
    freqstop=6.96,
    num_of_freq_points=401,
    sweep_type="Interpolating"
)

hfss.save_project()
print("PyAEDT Parametric Microstrip Patch generated successfully.")