Transmission line design for cross groove structure

Abstract

A design of transmission line used in cross-trench structure, taking use of the conception of impedance matching, optimizes the length and width of part of the transmission line which connects to the cross-trench structure. Thus the part of transmission line shows low-impedance characteristic as a capacitor, and accomplishes the impedance matching at designed frequency points, which will improve the discontinuous effect caused by the high-impedance characteristic of the transmission line on cross-trench structure.

Description

technical field [0001] The present invention relates to a transmission line, in particular to a transmission line used in a cross-slot structure. Background technique [0002] Wiring (Layout) is one of the designs of a Printed Circuit Board (PCB). The quality of wiring will directly affect the performance of the entire system, and most high-speed circuit design theories will eventually be realized and verified through wiring. It can be seen that wiring is crucial in high-speed printed circuit board design. [0003] In the design of multilayer printed circuit boards, in order to save costs, fewer layers must be used to complete the wiring of the entire board. Therefore, different voltage levels must be cut on the limited power supply layer. In this way, If the transmission line crosses these different voltage cutting planes, an OverSplit Plane structure is formed. [0004] Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic diagram 10 of an existing transmission lin...

AI Technical Summary

Problems solved by technology

However, although this existing technology can solve the problem of signal reflection, it increases the manufacturing cost and must face the problem of reducing the wiring space due to the increase of capacitance

Images