Currently it is possible to measure all the characteristics of an antenna with a good accuracy. Far-field ranges do not have a very good accuracy, due to parasitic reflections for the outdoor ranges and because of the limited distance between the source antenna and the tested antenna for the indoor ranges. The compact range allows one to obtain a direct farfield cut in a relatively short time. The near-field techniques are the most accurate and the most convenient for global antenna radiation testing. Their main defect is the duration of the measurement which rises from the large number of necessary space points. Rapid near-field measurement systems allow one to solve this problem, but the accuracy is less good, and the frequency bandwidth is limited. Progress is necessary in this field. Research relates to the rise in frequency, with for solutions the hologram compact antenna test range and the phaseless methods. The hologram compact antenna test range must improve their accuracy while the phaseless methods must improve their reliability. Electromagnetic diagnosis of antenna must be optimized on a case-by-case basis.