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  1. #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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  2. #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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  3. #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/(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



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  4. #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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    Re: balanis solutions

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



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    Re: antenna theory balanis solution

    Quote Originally Posted by Hyun-sung Hong View Post
    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.
    here is the whole matlab programs package for balanis 3rd edition.


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  7. #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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