Through the above analysis of the parasitic characteristics of the holes, we can see that in high-speed PCB design, seemingly simple holes often bring great negative effects to the circuit design.
In the design of high density PCB, the use of non-through-hole and the reduction of through-hole size also bring the cost increase, and the through-hole size can not be reduced indefinitely, it is limited by PCB manufacturers drilling and electroplating t
Copper coating on PCB, if the grounding problem is handled well, is "more advantages than disadvantages", it can reduce the signal line backflow area, reduce the signal external electromagnetic interference.
When the power supply or ground short circuit is found during debugging, the zero ohm resistance can be removed to narrow the search range.
a large number of customized a bunch of non-standard cables, resulting in the production line of the cable versatility is very low, once a model inventory is used up, the relevant car type no cable available, the production line can only shut down and oth
The most basic is often the most difficult to break through, but in the face of 5G, PCB should break the bottleneck, resistance and tolerance components such as "small" is an inevitable trend.
In addition, there is still some room for operators to increase investment in 5G construction plans. Pay attention to communication equipment vendors and their suppliers.
Many PCB manufacturers have to go through the network connection test of power-on before PCB processing is completed, to ensure that all the connections are correct.
This top view provides an example of installing a row of ground through holes in the top metal ground area on each side of the intermediate conductor. The circuit current caused by the top layer is short-circuited to the ground below.
Compared with the microstrip, the ground coplanar waveguide circuit has the characteristic of low dispersion, and the radiation loss of the ground coplanar waveguide circuit is lower than that of the microstrip circuit when the frequency rises to the mill
All of these problems can cause the solder shield to detach from the circuit board and eventually lead to corrosion of the copper circuit. Poor insulation characteristics can cause short circuits due to unexpected electrical connectivity/arcing.
All of these problems can cause the solder shield to detach from the circuit board and eventually lead to corrosion of the copper circuit. Poor insulation due to thin solder resistance layer can cause short circuit due to unexpected conduction/arc.
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