plotting dipole antenna far-field pattern, with multiple slices

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neil whitesell
neil whitesell 2020-12-1
编辑： neil whitesell 2020-12-1
i'm attempting to plot the far field pattern for multiple dipoles in a line, which make up one large one,
however, i need an input for current for each slice, so they can all be plotted on top of eachother so it appears as one dipole.
however, i am running into bugs in ths program, and i need it to ot only calculate the entire thing up at one point, but to do it in a circle so it can plot the field pattern
deltaL=.003366 %meters
beta=12.5664 %
eta=377
i=1.5 %current
betasq=157.914 %beta squared
addpath c:\antennas\ewa
l=.68
a=.001
ker='a'
basis='d'
R=1 %distance, one meter from dipole
E=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,100/.001,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
pfield(l,a,E,ker,basis)
%this spits out a large complex vector of many rows of the current
for k=0:1:49
i=abs(ans(k))%this will extract a different rom/value from the answer for each count
E=-x*(377*i*betasq*deltaL)/(2*pi)*e^(-sqrt(-1)*beta*R)*cos(theta)(1/(sqrt(-1)*beta*r)^2+1/(sqrt(-1)*beta*r)^3)-y*(377*i*betasq*deltaL)/(4*pi)*e^(-sqrt(-1)*beta)*R*sin(theta)*(1/(sqrt(-1)*beta*r)+1/(sqrt(-1)*beta*r)^2+1/(sqrt(-1)*beta*r)^3)
E=E*2 %second half of dipole
plot(x,y)
hold on
end

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