PCB multilayer board refers to the multilayer circuit board used in electrical products
High frequency PCBS offer a wide range of features. Knowing these features will help you understand these PCBS. These printed circuit boards are called high-frequency PCBS because of the characteristics they provide.
Nowadays, high frequency electronics are of great concern, especially in remote systems. With the rapid development of satellite communication, data items are developing towards fast and high frequency.
Multi-layer PCB is a circuit board composed of more than two layers of electrical layer (copper foil layer) superimposed on each other. The copper layers are bonded together by layers of resin.
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For traces with a certain width, three main factors will affect the impedance of PCB traces. First of all, the EMI (electromagnetic interference) of the near field of the PCB trace is proportional to the height of the trace from the reference plane. The lower the height, the smaller the radiation. Secondly, the crosstalk will change significantly with the height of the trace. If the height is reduced by half, the crosstalk will be reduced to nearly a quarter.
