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4th February 2009, 09:50 #1
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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.

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4th February 2009, 22:40 #2
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balanis solutions
Hi friend
I have all the solutions of Balanies but i can not upload , you can download them from www.4shared.com
enjoy
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5th February 2009, 02:15 #3
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antenna theory balanis
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/(N1):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/(N1):l/2
m1=1;
for z1=l/2:l/(N1):l/2
R=sqrt(a^2+(zz1)^2);
Kz(n1,m1)=1/(j*w*e0)*(exp(j*k*R)/(4*pi*R^5)*((1+j*k*R)*(2*R^23*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/(N1):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

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5th February 2009, 13:03 #4
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antenna theory balanis solutions
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
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18th November 2009, 10:04 #5
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Re: balanis solutions
hello aya
this is not solution of balanib antenna theory
it is for another book

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25th November 2010, 05:24 #6
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16th April 2011, 14:09 #7
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Re: I need solution of Antenna theory. Balanis 3rd (wire antenna
i need solution manual of Antenna theory by balanis 3rd edition not 2nd edition ...
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