the oscillating circuit components as close as possible to the IC, the oscillating circuit as far as possible away from the antenna and other vulnerable areas. Put a ground pad under the crystal oscillator.
Differential PCB lines are usually always routed in pairs, and the distance between them along the direction of the pair remains a constant at any position. In general, the layout of the differential pair is always as close as possible.
Now PCB design time is getting shorter and shorter, smaller and smaller board space, higher and higher device density, extremely demanding layout rules and large-size components make the designer's job more difficult.
Transmitters have two main PCB design goals: the first is that they must emit a specific amount of power while consuming the least amount of power possible. Second, they cannot interfere with the normal operation of transceivers in adjacent channels.
The main components of the bath are copper sulfate and sulfuric acid, and the formula of high acid and low copper is adopted to ensure the uniform thickness distribution of the plate and the deep plating ability of deep holes during electroplating.
the core board (GND to POWER) should not be too thick to reduce the distributed impedance of the power supply and ground plane; Ensure the decoupling effect of the power plane.
In the rapid development of science and technology today, a variety of high-tech electronic products emerge in an endless stream, which makes the demand for printed circuit boards increase sharply, manufacturing difficulties are becoming higher and higher
In order to ensure the high quality and high stability of the printed circuit board, to achieve the total quality management of the PCB factory and the control of the environment, it is necessary to fully understand the characteristics of the printed circ
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