It is definitely not so simple..So you must find only max in E (or H) and you have directivity.
% Input parameters:
% 1. TL, TU: Lower and upper limits in theta (in degrees)
% 2. PL, PU: Lower and upper limits in phi (in degrees)
% 3. U(theta,phi): The radiation intensity function (in file 'U.m')
The radiation intensity function F must be provided for a given antenna, and should be inserted into the subprogram U.
% **Example**
% y = sin(THETA).*(sin(PHI)).^2;
function y = U(THETA, PHI)
% **Example**
% y = sin(THETA).*(sin(PHI)).^2;
1. TL, TU: Lower and upper limits in theta (in degrees)
2. PL, PU: Lower and upper limits in phi (in degrees)
*EXAMPLE: If the antenna is radiating only in the upper hemisphere, the input parameters are TL = 0, TU = 90, PL = 0, PU = 360.
john54 said:You still don't understand... Yes I know this, but this equation has two unknown variables..(Gt,Gs).. also I don't have distance...
What I am asking is how to calculate directivity from E and H plane of the radiation patterns. I know it is integral of both planes...
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