Connection structure for radio frequency circuit that exceeds in RF characteristics

A connection structure for an RF circuit comprising a circuit board that mounts electric components on a wiring pattern provided on one side thereof to form a desired RF circuit, a grounding pattern provided on another side of the circuit board, and a jumper member provided on the other side of the circuit board, wherein

• the jumper member includes a boxed-shaped cover with a lower side open, an insulating base contained inside the cover, and a jumper line of which both ends are projected downward from a lower side of the insulating base in a state that the jumper line is positioned by the insulating base;
• wherein the jumper line includes a base part that is positioned by the insulating base, and is placed inside the cover to be electrically shielded, and terminals projected downward from the lower side of the insulating base;
• wherein the wiring pattern includes first and second conductors and a third conductor that passes between the first and second conductors;
• and
• wherein with regard to the jumper member provided on the other side of the circuit board, the insulating base having positioned the jumper line is mounted on the circuit board, the terminals are inserted through the circuit board to be connected to the first and second conductors in a state that the jumper line intersects the third conductor, and the cover is attached to the circuit board in a state that lower ends of the cover are put into contact with the grounding pattern.