Structure comprising cable and board and fabrication method thereof

Abstract

A structure comprises a cable and a board. The cable comprises at least one core wire, an insulation portion covering the core wire and a shield portion covering the insulation portion. The board is formed with a ground pad. The shield portion is soldered to the ground pad. The ground pad has a predetermined length in a direction in which the shield portion extends. The cable is configured so that its characteristic impedance is kept to a predetermined constant value. The cable has a predetermined section which includes the shield portion and extends from an end of the shield portion to a position apart from the end of the shield portion by three times the predetermined length. A difference between a maximum value of the characteristic impedance in the predetermined section and the predetermined constant value is equal to or less than 5 Ω.

Dependencies are inferred from the claim text.