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What are the High-Frequency Board? Ceramic circuit board?

In PCB prototyping, high-frequency boards are primarily used for high-speed electronic applications, including 5G communication base stations, power amplifiers, ceramic filters, GPS high-frequency antennas, and more. So, what exactly are high-frequency boards and ceramic substrates?

What are PCB High-Frequency Boards?

PCB high-frequency boards are specialized circuit boards with high magnetic frequency. Generally, high frequency can be defined as frequencies above 1GHz. These boards have extremely high requirements for various physical properties, accuracy, and technical parameters. They are commonly used in automotive collision avoidance systems, satellite systems, radio systems, and other fields, albeit at a higher cost.

What materials are used for PCB High-Frequency Boards?

  1. Powder Ceramic-Filled Thermosetting Materials

  • Rogers Corporation's 4350B/4003C

  • Arlon Corporation's 25N/25FR

  • Taconic Corporation's TLG series

  1. PTFE (Polytetrafluoroethylene) Materials

  • Rogers Corporation's RO3000 series, RT series, TMM series

  • Arlon Corporation's AD/AR series, IsoClad series, CuClad series

  • Taconic Corporation's RF series, TLX series, TLY series

  • Taixing Microwave's F4B, F4BM, F4BK, TP-2

What are the advantages and disadvantages of Ceramic Substrates?

Ceramic substrates have numerous advantages, including high resistance, outstanding high-frequency characteristics, high thermal conductivity, excellent chemical stability, earthquake resistance, heat resistance, and pressure resistance. However, ceramic PCBs also have noticeable disadvantages, such as fragility, relatively high scrap rates in various processes, high prices, and greater processing difficulty due to their high hardness and density, which can lead to easier breakage of drill bits and milling cutters during processing.




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