3D directional antenna pattern
5 views (last 30 days)
Show older comments
Hi All, I have been struggling for 2 day with problem I mentioned in title. I would like to visualize the 3D antenna pattern with 70 degrees beamwidth (half power angle) for horizontal plane and 15 degrees for vertical plane. I would like to see directivity (shape) and gain (as color of shape). I got some result but it is not what I wanted to see. I'm using standard approach with meshgrind and sph2cart functions, maybe I make mistake somewhere. I attached the code and image presenting the beam. Link to beam plot: http://speedy.sh/PwYen/an.png
clear all
close all
AntennaGain = 14; % typical gain for below angles
hangle3db = 70;
vangle3db = 15;
[phi theta] = meshgrid(-180:180,-90:90);
Zin = - (12*(phi/hangle3db).^2 + 12*(theta/vangle3db).^2);
Zin = Zin + AntennaGain; % total gain
mnz = min(min(Zin));
mxz = max(max(Zin));
shape = Zin;
[x y z] = sph2cart(phi*pi/180,theta*pi/180,shape);
surf(x,y,z,'EdgeColor','none')
daspect([1 1 1])
I would be so grateful for any comments and remarks.
Regards Maciek
0 Comments
Answers (1)
Honglei Chen
on 31 May 2012
I couldn't really comment on the pattern itself but I think part of the issue is that your color is not appropriately applied. You can try to replace your surf with the following command
surf(x,y,z,'EdgeColor','none','CData',Zin)
2 Comments
Honglei Chen
on 31 May 2012
Could you explain then what the issue is? What is the result you want to see?
See Also
Categories
Find more on Antennas, Microphones, and Sonar Transducers in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!