Circular Arc route problem

A good PCB design, in addition to a good chip layout, the other is a more critical PCB of the route design. As for the route problem, engineers generally refer to some design manuals. The design manual will generally tell you: the line can not appear any angle line, to the standard of 45° and 135°, the same network of two lines cross, do not cross into a right angle and sharp angle, to use 45° and 135° line transition; When a line and right angle cross, avoid the sharp angle, you can take the right angle. In the high-frequency design, there are special considerations, such as: high-frequency signal line should avoid the use of 90° angle bend, should use a smooth arc or 45° angle, high-frequency line should reduce the use of the hole connection; all signal lines away from the crystal oscillator circuit, the high-frequency signal line should be used a single continuous route, Avoid the occurrence of a few lines extending from one point to the next.

For example, circular arc line problem, now many customers are required arc line, and after testing found that the arc line in 10GHz above the system design is helpful, but under 10GHz, Arc Line and no help. The second goal is to put a doubt in the design of the place, we measured it, give a quantitative verification. There is a comparison between the results of the test and the simulation results, mutual verification.

Circular Arc route problem