Antenna Impedance integral Calculation

[qiqi6416]

antenna impedance calculation

HI, all. I got this equation from Balanis's <<Antenna Theory>>. Could any of you tell me how can I calculate the value of G12? Any help will be appreciated.
(ko, W, L are given) where Jo is the Bessel Function of the first kind of order zero

 

[kleinesmurf69]

hello,

the only way to calculate G12 is by using numerical integration.
in octave or matlab try the quad function.
there appears to be a singular point at pi/2. try integrating from 0 to pi/2 (not included) and from pi/2 to pi, than add the 2 results.
or, octave has a built-in function for integrating an expression with singular values. I am not sure whether matlab has a similar function.

greets