METHOD OF SINGLE MODAL BACKUP OF INTERCONNECTIONS Russian patent published in 2020 - IPC H04B15/00 H01P11/00 

FIELD: printing equipment.

SUBSTANCE: invention relates to the design of printed circuit boards, specifically to methods of their redundancy. It is achieved by the fact that in the chains reservation method, including the redundant and backup circuits routing, conductors 1 and 2 are laid on one side of dielectric layer, and a third support conductor is laid inside the dielectric layer between them at the center, and conductors 1* and 2* are laid symmetrically and symmetrically on the back side of the dielectric layer. Pairs of conductors, which form redundant and backup circuits, are connected to each other at one end in one of three ways: on one layer - 1-2 and 1*-2*, on different layers - 1-1* and 2-2* or diagonally - 1-2* and 2-1*, as a result, a section of a four-wire transmission line is formed, consisting of two turns of the meandering line of the redundant and backup circuits. Between the redundant circuit including conductor 1 and the reference conductor there is pulse interference, wherein the second coil of the meander line, in the beginning and the end of which resistors are connected with resistance values equal to wave resistance of path of 50 Ohm, it performs the function of reserve circuit.

EFFECT: technical result is increased attenuation of powerful ultrashort pulses.

1 cl, 3 dwg