How can I provide 625 element amplitude taper in antenna array designer?

I am looking into providing different excitation coefficients for a 25x25 array (can be a patch or dipole). How can I provide a taper in this case? Can I create a variable and call it into the array designer? I would need 625 values of amplitudes so creating an array would be tedious.

Answer 1

[Aastha]

Hi @nihairka,

I understand you want to apply an amplitude taper to a 25x25 rectangular array. This involves the following steps:

First, you can create a rectangular array in the array designer with your required specifications. Next, you can export the rectangular array to the workspace as a rectangular array object. You may refer to the link of MathWorks documentation on rectangular array mentioned below:

https://www.mathworks.com/help/antenna/ref/rectangulararray.html

You can set the amplitude taper to the rectangular array object. You may refer to the following code snippet to do:

amplitude_taper = rand(25,25); 
amplitude_taper = amplitude_taper(:); 
ra.AmplitudeTaper = amplitude_taper; % ra is the exported rectangular array object 
show(ra); 
pattern(ra); 

The variable "amplitude_taper" is a 625x1 vector of the amplitude excitations.

Next, you can use the "show" function in MATLAB to visualize the array layout along with the "pattern" function to visualize the antenna radiation pattern associated with the rectangular array. Here is the documentation for the same:

•  show: https://www.mathworks.com/help/antenna/ref/cavity.show.html
• pattern: https://www.mathworks.com/help/phased/ref/phased.pattern_array.pattern.html

I hope this is helpful!