3D Farfield radiation pattern
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Hello everyone,
I've measured an antenna with rotation stand and got results for phi, theta and measured power. Phi and Theta are vectors, and P is the 2D power matrix. Because the antenna wasn't centered I used rotation matrices to compensate for the shift so after this compensation I got three 2D matrices - for Theta, for Phi and for Power. A used surf(Theta, Phi, P) and got :
Now this is a good visualization, but I want to plot in polar axes, so it will look more like this:
回答（5 个）
Roman Klimovich
2017-11-20
0 个投票
I found a function called patternCustom that plots the radiation pattern, only when theta and phi are vectors, and power is a matrix. The problem is it shows the radiation pattern compressed in azimuth direction:
Does anyone have a solution for this?
Georgios Kyriakou
2020-1-3
0 个投票
I used the patternCustom(magE,theta,phi) and it worked. You should take care to call it properly, that is vector theta should be row and phi should be column, and magE should be of size [length(phi) length(theta)]. Also angles should be given in degrees. I got this for the pattern I was trying to plot, which is pretty much what I expected
Vishwanath Iyer
2021-6-3
0 个投票
patternCustom is indeed the way to proceed with this. Details of the inputs and their dimensions are provided here
and in the following example:
Jan Budroweit
2022-4-14
0 个投票
When i try to plot the 3D pattern i get the following error:
Unable to resolve the name em.FieldAnalysisWithFeed.getfieldlabels.
Error in antennashared.internal.radiationpattern3D (line 33)
[~, units] = em.FieldAnalysisWithFeed.getfieldlabels(parserObj.Results.plottype);
Error in patternCustom (line 159)
[hPlot] = antennashared.internal.radiationpattern3D(MagEBlocks,theta1,phi1,'CurrentAxes', 1);
Plotting the rectengular coordinating systems works
1 个评论
Luis Carrion
2022-6-30
I removed line 33 from radiationpattern3D.m
[~, units] = em.FieldAnalysisWithFeed.getfieldlabels(parserObj.Results.plottype);
After that, everything worked.
It seem to be that you only use that line for getting 'units' name from a p-code.
You can change line 76 (radiationpattern3D.m) for the following:
ylabel(cbar, '');
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2017-11-20
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