Moving finite-size dipole emission

Emission of a finite-size arbitrarily moving dipole is considered. It is shown that the dipole radiation intensity can be expressed in terms of the dipole moment of the system for wavelengths longer than the dipole size. In this case, the system radiation intensity is much lower than that of the unit charge. For wavelengths much shorter than the dipole size, the dipole radiation intensity is equal to the sum of radiation intensities of two charges. For wavelengths comparable to the dipole size, interference minima and maxima arise in the angular distribution of the radiation intensity.