The present invention relates to a connection having a joint with a limited range of motion, the connector including: a connection connector including a connection signal pin, a connection dielectric surrounding the connection signal pin, and a connection ground electrically insulated from the connection signal pin by the connection dielectric; and a first fixed connector into which one side of the connection connector is inserted and which allows a joint of the connection connector to move on the basis of the inserted one side of the connection connector, wherein the connection ground includes a connection protruding portion formed so that one end of the connection ground protrudes outward, a connection limiting portion which is adjacent to the connection protruding portion, has a thickness smaller than a thickness of the connection protruding portion, and comes in contact with an inner side of the first fixed connector to limit a range of motion of the joint of the connection connector, a connection elastic portion which is adjacent to the connection limiting portion and has a thickness smaller than a thickness of the connection limiting portion, and a plurality of connection slits which are formed along a circumference of the connection protruding portion and extend from one end of the connection connector in a longitudinal direction of the connection connector so that the connection protruding portion, the connection limiting portion, and the connection elastic portion are separated into a plurality of pieces.