| 摘要 |
PROBLEM TO BE SOLVED: To provide the strip line whose impedance remains the same even when its conductor width is selected identical to the width of pads matching various electronic components mounted on a board. SOLUTION: Strip lines 1A, 1B, 1C are formed such that at least two strip conductors 3A, 3B, 3C or over are arranged to one side of a board 2 and ground conductors 4A, 4B, 4C are arranged at positions corresponding to the strip conductors 3A, 3B, 3C with the board 2 inbetween. In this case, the board 2 is made up of at least two multi-layered wiring boards 2A, 2B, 2C, 2E, 2G, and each of two strip conductors 3A, 3B, 3C or over has a prescribed impedance with the ground conductors 4A, 4B, 4C arranged at a position of a desired thickness in the board 2, multi-layered wiring boards 2A, 2B, 2C, 2E, 2G respectively matching the width of the strip conductors 3A, 3B, 3C. |
