Coaxial magnetron is in the ordinary magnetron flap cavity (called the cavity) plus a high quality factor coaxial cavity (called the outer cavity) and formed by the inner cavity on the back wall of the phase The coupling gap couples the fields of the internal and external cavities
Coaxial magnetron has the advantages of good pattern segmentation, high efficiency and good frequency stability, commonly used in moving target display, precision tracking and ranging radar. The anti-coaxial magnetron consists of an inner anode and a coaxial cathode, which increases the area of the cathode. Coaxial magnetron operating wavelength can be as short as millimeter band. This magnetron is characterized by high power, high efficiency, good frequency stability.