Design Patch Antenna

A simple patch antenna design library

Prerequisite

Python environment

• python=3.10

• Install below packages

pip install scipy==1.9.0
pip install gerber_writer==0.3.4

Installation

pip install patch_antenna

Design patch antenna

To get the design results of a patch antenna use the method design(freq, er, h) by passing your resonant frequency (Hz), dielectric constant and thickness of the cavity (m) values as arguments.

Simple Design and Usage

Getting design parameters

import patch_antenna as pa

# resonant frequency in Hz
freq = 2.4 * 10 ** 9

# dielectric constant
er = 4.4

# thickness of the cavity in meter
h = 1.6 * 10 ** -3

result = pa.design_string(freq, er, h)

print(result)

Output:

{'frequency': 2400000000.0, 'patch_width': 0.0380099749575278, 'patch_length': 0.0294215930843705, 'feeder_width': 0.015203989983011122, 'feeder_length': 0.015449608708025277, 'inset_gap_width': 0.007601994991505561, 'inset_length': 0.010914409094654586, 'ground_length': 0.05447120179239577, 'ground_width': 0.06281396494053892, 'input_edge_impedance': 321.50075290241097}

Write as Gerber file for both feed types

• Normal feed

pa.write_gerber(freq, er, h, 'patch_design_normal_2.4GHz_4.4_er_1.6_h.gbr', 'normal')

• Inset feed

pa.write_gerber(freq, er, h, 'patch_design_inset_2.4GHz_4.4_er_1.6_h.gbr', 'inset')

Customize design results

Using design object

design = pa.design(freq, er, h)

design.feeder_length *= 1.25

design.feeder_width *= 1.10

pa.write_gerber_design(design, 'custom_patch_normal_design.gbr', 'normal')

pa.write_gerber_design(design, 'custom_patch_inset_design.gbr', 'inset')

Future:

• Design and gerber generation for patch antenna arrays and including other parameters calculation.

Note

Patch antenna design, 3D simulation, and Gerber file facility also published as Web-Live application.

• Patch antenna util - Web Live Application
• Patch antenna util - GitHub
• Blog post