High Frequency PCB
High-frequency PCBs (high-frequency printed circuit boards) are specialized circuit boards designed specifically for handling high-speed signals in the gigahertz (GHz) range. Their core principle is to ensure signal integrity and low loss during transmission through carefully selected substrates and precision manufacturing processes. These boards are available in a variety of materials, including FR-4, ceramic, metal-based (such as aluminum and copper), and rigid-flex. They can achieve a minimum line/space width of 3 mils (0.075mm) and a 10:1 thickness-to-aperture ratio in board thicknesses ranging from 0.3 to 6mm and complex structures up to 32 layers, demonstrating exceptional routing accuracy and signal control. With a variety of surface treatments, from OSP to immersion nickel gold, they effectively reduce signal attenuation and latency during transmission. Consequently, they are widely deployed in areas requiring extremely high signal stability, such as 5G communications infrastructure, automotive radar systems, satellite communications equipment, and high-end measurement instruments, becoming a critical hardware foundation for high-speed connectivity and modern wireless technology innovation.
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