The application relates to a coaxial
relativistic magnetron outputting TEM
modes, belonging to the technical field of high-power microwaves, which comprises an
anode, a
cathode and a
magnet, the
anode comprises an inner cavity cylinder and an outer cavity cylinder which are coaxially nested, long
anode blocks and short anode blocks are alternately arranged on the inner wall of the inner cavity cylinder in the
angular direction, the long anode blocks and the short anode blocks are alternately distributed in the axial direction of the inner cavity cylinder to form symmetrical sector edge cavities inside the inner cavity cylinder, an edge cavity angular
coupling slot is arranged on the inner cavity cylinder and corresponds to the sector edge cavities, and an inner cavity axial
coupling slot is arranged on the inner cavity cylinder and located between the long anode blocks and the short anode blocks, the application has the advantages of simple and compact structure, suitable permanent
magnet packaging and low-order mode output, and can realize high-power and high-efficiency
microwave output.