This does not uniquely define either the unit vector ˆl nor the scalar part le, since a change in the definition of the former can be compensated by a change in the definition of the...This does not uniquely define either the unit vector ˆl nor the scalar part le, since a change in the definition of the former can be compensated by a change in the definition of the latter and vice-versa. The potential induced in a dipole is the co-polarized component of the incident electric field times a normalized integral of the transmit current distribution over the length of the dipole, times sine of the angle between the dipole axis and the direction of incidence.