| 摘要 |
Provided is a printed circuit board configured to remove undesired signals generated in a transmission line, the signals having frequencies that are integral multiples of a basic frequency. Two 1/4 wavelength lines 5 and 6 each having a length that is 1/4 of a basic frequency corresponding to a data rate of coded digital signal are arranged at a signal wiring layer, which is one of surface layers of a substrate 8, along a transmission line 3 for transmitting the digital signal. One end 15a of the first 1/4 wavelength line 5 is opened, and another end 15b is grounded to a ground 7. Both ends 16a and 16b of the second 1/4 wavelength line 6 are opened. |
