plotting dipole radiation pattern

im trying to figure out where to add dipole radius and gap distance into this program below so i can plot the far field dipole

radition in the E-plane

i have this so far--v

%Wavelength

lam = .5;

%Dipole antanna

L = .68*lam;

%Phase constant

B = 2*pi/lam;

t = 0:0.01:2*pi;

% Far-field pattern equation

E2 = abs((cos(B*L/2*cos(t))-cos(B*L/2))./sin(t)).^2;

figure()

polar(t,E2)

Answer 1

[Shashank Kulkarni]

You can use Antenna Toolbox to solve this using two lines of code

ant = design(dipole, 100e6);

pattern(ant, 100e6);