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Design Patch Antenna

A simple patch antenna design library

https://api.travis-ci.com/bhanuchander210/patch_antenna.png

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.

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.