Dual-ring 3dB bridge with rectangular separation rod

The utility model discloses a dual-ring 3dB bridge with a rectangular separation rod. The coupling effect is substantially enhanced by providing a first annular coupling portion, a second annular coupling portion, a third annular coupling portion and a fourth annular coupling portion. The coupling coefficient measured by simulation software is high, and the coupling frequency reaches 2950 khz, which substantially satisfies the requirements of current main LTE technical standard. The practicality of the dual-ring 3dB bridge is increased substantially. The dual-ring 3dB bridge is simple in structure, long in service lifetime and unlikely to be damaged, and the isolation degree is substantially increased due to first to fourth disconnecting levers.