Hello experts.
I just came across an issue I'm trying to understand.
The problem: controlling the impedance on 2 layers flex PCB (1 signal,
one reference plane) 5 to 10 cm long, connecting two PCBs
The question: to have a good flexibility we should crosshatch the plane
but to control the impedance it is better to have a uniform not hatched
plane.
Probably controlling the hatch pitch and width we can minimize the
discontinuities but do you have any recommendation ?
Can you suggest anything to read about it ?
Thanks in advance.
Pietro
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