antenna theory balanis solution

anyone have matlab code Example 8.3 , 8.4 ?

I trying to coding 'Moment method" by matlab.
but I could not understand sourcemodeling(delta gap, magnetic frill).

help me plz.

2rd solution are no example and matlab code.

Hi friend

I have all the solutions of Balanies but i can not upload , you can download them from www.4shared.com


enjoy

thankx. but
I need just matlab code of example 8.3 8.4.

It seems to easy to code.
but i can't it.

-------[my matlab code ]-------------------------------------------------------------


% Moment Method for Line Antennas
clear all;



%Initial Value
ramda=.001;
f=3*10^8/ramda;
w=2*pi*f;
N=21;
l=0.47*ramda;
a=0.005*ramda;
b=a*2.3; % Zc=50 ohm Example 8.3 from balanis pp.449
delta=l/N;
e0=1/(36*pi)*10^-9;
u0=4*pi*10^-7;
k=w*sqrt(e0*u0);
Vs=1;

% Magnetic frill
n=1;
z=-l/2:l/(N-1):l/2;
R1=sqrt(z.^2+a^2);
R2=sqrt(z.^2+b^2);


for n=1:N;
Eiz(n,1)=-Vs/(2*log(b/a))*(exp(-j*k*R1(1,n))/R1(1,n)-exp(-j*k*R2(1,n))/R2(1,n));
end


%Poklinton integral eq.



n1=1;

for z=-l/2:l/(N-1):l/2
m1=1;
for z1=-l/2:l/(N-1):l/2
R=sqrt(a^2+(z-z1)^2);
Kz(n1,m1)=-1/(j*w*e0)*(exp(-j*k*R)/(4*pi*R^5)*((1+j*k*R)*(2*R^2-3*a^2)+(k*a*R)^2))*l/N;
m1=m1+1;
end
n1=n1+1;

end

% Result = [Iz]=inv([Kz])[Eiz]
Iz=inv(Kz)*Eiz;

plot(-l/2:l/(N-1):l/2,abs(Iz));

-------------------------------------------------------------------------------------------

Magnetic frill source modeling 'Eiz' are correct?

and Why N is bigger than 200 , change result of 'Iz' ?

use Moment method

My friend see this online downloadable book
www.ece.rutgers.edu/~orfanidi/ewa

it has the moment method programmed and ready to use in any form. as well as, it has many othether methods programmed and ready for use

Montadar

hello aya
this is not solution of balanib antenna theory
it is for another book

here is the whole matlab programs package for balanis 3rd edition.

i need solution manual of Antenna theory by balanis 3rd edition not 2nd edition ...