Smith Chart in GNU Radio

GNU Radio
1

Hi

I am trying to figure out how to use smith chart as a sink in GNU Radio.
I made an OOT (GitHub - mitul93/gr-smithchart: pyQT based smith chart for GNU Radio) using pyQT by
following Tim O’shea’s work.
It is merely a skeleton, still lots of work to do.

I made two versions of smith chart - one using pyQT and another using
matplotlib (ploar plot).
After executing example_smithsink_numpy.py when I close the graph, the
program won’t stop. I tried to write an close_event() for the graph, but
it
didn’t work. Is it happening due to the fact I am using it with GNU
Radio?

To display data point on graph, shall I use message passing or simple
vector input?

Also please give me your feedback about expected function that I must
implement in smith chart.

Thanks
Mitul Vekariya
Institute of Technology
Nirma University

2

Hello

Problem solved. I removed the QApplication() from the example.
Matplotlib
was used for plotting, no need of qApp!!

Thanks
Mitul Vekariya