pysmithchart

https://pysmithchart.readthedocs.io/
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pysmithchart is a Python library that provides matplotlib-compatible Smith charts for RF and...
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### Install pysmithchart with pip

Source: https://pysmithchart.readthedocs.io

Install pysmithchart using pip. Run this command in a terminal or command prompt.

```bash
pip install pysmithchart

```

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### Install pysmithchart with conda

Source: https://pysmithchart.readthedocs.io

Install pysmithchart using conda from the conda-forge channel. Requires conda to be installed.

```bash
conda install -c conda-forge pysmithchart

```

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### Plot reflection coefficients with R_DOMAIN

Source: https://pysmithchart.readthedocs.io

Plot reflection coefficients (S-parameters) on a Smith chart. Uses the R_DOMAIN domain for the plot and sets a marker style. Requires matplotlib and pysmithchart.

```python
import matplotlib.pyplot as plt
from pysmithchart import R_DOMAIN

S = [0.5 + 0.3j, -0.2 - 0.1j]

plt.figure(figsize=(6, 6))
plt.subplot(1, 1, 1, projection="smith")
plt.plot(S, domain=R_DOMAIN, marker='o', markersize=10, label='S₁₁')
plt.legend()
plt.title('Reflection Coefficients')
plt.show()

```

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### Plot normalized impedances with Z0=200

Source: https://pysmithchart.readthedocs.io

Plot normalized impedances on a Smith chart with a characteristic impedance Z0 of 200 ohms. Enables minor grid lines via the grid.Z.minor_enable option. Requires matplotlib and pysmithchart.

```python
import matplotlib.pyplot as plt
import pysmithchart

ZL = [30 + 30j, 50 + 50j, 100 + 100j]

sc = {"grid.Z.minor_enable":True}
plt.figure(figsize=(6, 6))
ax = plt.subplot(1, 1, 1, projection="smith", Z0=200, **sc)
plt.plot(ZL, "b-o", markersize=10, label='Load Impedance')
plt.legend()
plt.title('Impedances with Z₀ = 200Ω')
plt.show()

```

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### BibTeX citation for pysmithchart

Source: https://pysmithchart.readthedocs.io

BibTeX entry for citing pysmithchart in academic or technical work. Includes author, title, version, DOI, and publisher information.

```bibtex
@software{pygrin_prahl_2026,
  author    = {Scott Prahl and Paul Staerke},
  title     = {pysmithchart: A Python module for Smith charts},
  year      = {2026},
  version   = {0.9.0},
  doi       = {10.5281/zenodo.18409151},
  url       = {https://github.com/scottprahl/pysmithchart},
  publisher = {Zenodo}
}

```
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