Testing a gate fence antenna with a vector network analyzer. This is a picture of the antenna of the original receiver for the fence controller after some cleaning. ( See previous blogpost)
As i have a vector network analyzer (vna) i wanted to test the antenna to check on what frequencies it can be (re)used. I soldered an sma connector to the coax wire, calibrated the vna and did a quick scan over a relative broad range.
See below the results displaying Smith chart, Quality factor and swr (VSWR). The lower the swr the better. The minima in the swr curve give an indication of optimal frequencies.
I also did the same quick scan on some other antenna's and post the blog reports with the results. Therefore this blogpost is in fact part of two different series of blog posts.
-1- Dismantling the electronics of a gate fence. ( #GateFence )
-2- Some antenna's quick tested ( with a vector network analyzer (vna) ).
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