Circulator

The invention discloses a circulator, which relates to the technical field of circulator design and manufacture and comprises a magnetic shielding shell, and a permanent magnet, a first metal cavity, a central conductor, a gyromagnet substrate, a medium cavity, a magnetic circuit compensation plate, a second metal cavity and the like which are arranged in the magnetic shielding shell. A single-sided permanent magnet is adopted to magnetize gyromagnetic ferrite, and a magnetic circuit compensation sheet is added on the other side of a gyromagnetic ferrite substrate, so that a strong uniform field is obtained in the gyromagnetic ferrite substrate, and the height of the device is reduced on the premise of ensuring that the performance of the circulator is not influenced and the plane size of the device is greatly increased. According to the circulator, the strip-shaped metal connecting wire is arranged at the grounding end of the grid inductor stacked on the upper portion, the reflection coefficients of the thre