 #1
AHSAN MUJTABA
 88
 4
 Homework Statement:

Compute the radiation pattern from a square current loop of area A carrying a
current ##i_o Cos(\omega t)+i_oSin(\omega t)##
 Relevant Equations:

the magnetic dipole vector potential
##A_dip =\mu_o(\vec m\times \hat n)##
##\frac{dP}{d\Omega}=(\vec E\times\vec H)##
I am computing the radiation pattern for that I have to calculate the power per solid angle I found $$m( magnetic moment)=I(t)A$$ where then i took the cross product with $n=sin(\theta)cos(\phi)i+sin(\theta)sin(\phi)j+cos(\theta)k$ After that I moved towards computing the E and B which I know how to compute. and then power per solid angle. But I want to know that is this the right approach or do I have to calculate the quadrupole tensor because the dipole contribution would be zero? I don't know I am right