The space between copper planes can act as waveguides for RF frequencies. It makes trace impedance changes and signal losses.
To cut such waveguide effect, put vias, which is essentially a copper cylinder.
When the distances between vias are small enough compared to the wavelength, the board is like continuous copper material, instead of waveguide.
consulte Mais informação: Protótipo de montagem de PCB
#PCB Design
Qual seria a velocidade média de montagem de componentes de montagem em superfície em uma PCB para uma pessoa experiente?? Supondo que eles tenham uma mesa configurada corretamente (estação de escolha e posicionamento) e o PCB já tem pasta de solda aplicada.
Recently we are developing a portable device which should be very tiny and light. In terms of PCB design, I am thinking whether it is a good idea to exclude ground plane to minimize the product size.
I am a buyer in a telecom company. Recentemente, an important order of SMT PCBA is delayed due to insophiscated production of a supplier. I am thinking about replace it and just very puzzled about how did their SMT pad fall off easily when soldering the PCB boards. That slows down the whole process.
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