Patent ID: 8172617

Claim:
A radio-frequency connector comprising: a socket member and a plug member electrically connectable to said socket member, wherein one of said socket member and said plug member has an impedance element mounted therein such that said impedance element is electrically connected to a metal casing and a metal center pin of the socket member or plug member carrying said impedance element when said plug member is disconnected from said socket member for causing said impedance element to provide a terminal effect to isolate external electromagnetic noises; said impedance element is separated from the metal casing and metal center pin of the socket member or plug member carrying said impedance element when said plug member is connected to said socket member; wherein said plug member comprises: a metal casing shaped like a hollow barrel, said metal casing having a front opening and an opposing rear opening, said front opening is configured to receive said socket member; an internal insulation member mounted inside said metal casing; a metal center pin mounted in the central axis of said metal casing and inserted through said internal insulation member, said metal center pin having a front end for connecting a metal center pin of said socket member electrically; a front insulation member axially movably mounted inside the front opening of said metal casing and sleeved onto said metal center pin, said front insulation member being movable along said metal center pin upon insertion of said plug member into said socket member; an impedance element mounted in said metal casing, said impedance element having a first end and an opposing second end; a metal contact sleeve electrically conductively sleeved onto said metal center pin and axially movable with said front insulation member relative to said metal center pin; and an elastic member adapted for returning said front insulation member after displacement of said front insulation member; the first end and second end of the impedance element of said socket member are respectively electrically connected to said metal casing and said metal contact sleeve for causing the impedance element to provide a terminal effect to isolate external electromagnetic noises when said plug member is disconnected from said socket member; inserting said plug member into said socket member causes said front insulation member and said metal contact sleeve to be moved to disconnect one of the first end and second end of the impedance element of said socket member from the metal casing or metal contact sleeve of said socket member.