External device-to-external device connector for wireless communication devices

The present disclosure relates to an external device-to-external device connector for wireless communication devices, which is configured to electrically connect two spaced external devices together, and comprises two interface members and a coupling member. The inner conductor part and the insulation part of the coupling member are held together by the concave-convex fitting parts opposite to each other, and there is a first gap between the concave-convex fitting part of the inner conductor part and that of the insulation part, which allows the inner conductor part to have radial displacement relative to the insulation part; or, the outer conductor part and the insulating part of the coupling member are held together by the concave-convex fitting parts opposite to each other, and there is a second gap between the concave-convex fitting part of the outer conductor part and that of the insulating part, which allows radial displacement of the insulating part relative to the outer conductor part. The external device-to-external device connector can achieve satisfactory RL and PIM performance.