Dipole antennas gain vs length formula

Hi all,

This question is basic but I somewhat can remember it, can anyone please state the formula of Dipole antenna gain in terms of its length.

Thanks

Dipole antenna - Wikipedia, the free encyclopedia

should really be frequency Vs length maybe ?

there's no real direct relationship between gain and length till you start playing with multiples of 1/4 wavelength etc

Dave

G={pi*(L/λ)2} ÷ {ε*c*(2*pi/3*ε*c)(L/λ)2}
this is the formula for dipole antenna incase of its length