High Frequency PCB Guide

A high-frequency PCB is a printed circuit board with a high electromagnetic frequency. High frequency is a frequency greater than 300MHz or a wavelength less than 1 m. Microwave is a frequency greater than 3GHz or a wavelength less than 0.1 m.

A high-frequency PCB is a circuit board made using specific methods on a copper board. A high-frequency printed circuit board has a frequency of over 1 GHz.

high_pcb
参数类别 Parameter Item Typical Value/Range
Line Width/Spacing 最小线宽 3-4mil
最小间距 3-4mil
Line Width Tolerance ±1-2mil
Material Parameters Dielectric Constant(Dk) 2.8-3.5
Dissipation Factor(Df) 0.001-0.003
Material Thickness Tolerance ±10%
Drilling Capability Minimum Hole Diameter 0.2-0.25mm
Hole Diameter Tolerance ±0.075mm
Hole Position Accuracy ±0.075mm
宽高比 8:1-10:1
阻抗控制 Impedance Tolerance ±8-10%
Differential Impedance Tolerance ±10%
铜的厚度 Outer Layer Copper 0.5-2oz
Inner Layer Copper 0.5-1oz
Copper Thickness Tolerance ±10%
Layer Registration Layer-to-Layer Registration ±0.075mm
Drill-to-Layer Registration ±0.075mm
Surface Treatment Surface Roughness Ra <0.3μm
ENIG Thickness 2-3μm

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Features of High Frequency PCB

High_Efficiency pcb

High Efficiency

  1. High frequency PCBs have a small dielectric constant
  2. Small dielectric constant means less signal loss
  3. Lower energy consumption during operation
  4. Efficient heat distribution through advanced induction heating
  5. Environmentally friendly due to high energy efficiency
high_speed_pcb

高速

  1. High frequency PCBs have a low loss factor
  2. Lower dielectric constant enables faster signal transmission
  3. Special materials maintain stable operation
  4. PTFE materials reduce signal loss at high frequencies
  5. Excellent signal performance across all frequency ranges
Large_Adjustability

Large Adjustable Degree

  1. Widely used across different industries
  2. Flexible heating control capabilities
  3. Can achieve precise heating at different depths
  4. Supports both surface and deep heating
  5. Allows both focused and distributed heating patterns
Strong_Resistance pcb

Strong Resistance

  1. Excellent resistance to humid environments
  2. Very low water absorption rate
  3. Strong chemical corrosion resistance
  4. High temperature tolerance
  5. Good moisture resistance
  6. Superior peeling strength
  7. Reliable performance in harsh conditions

High Frequency PCB Materials

PCB_FR4

FR-4

  1. Most commonly used standard circuit board material
  2. Made of glass fiber reinforced epoxy resin
  3. Flame retardant (4-grade flame retardant)
  4. Cost-effective
  5. Easy to process and use
  6. Excellent electrical insulation
  7. Good structural strength
PCB_Rogers

罗杰斯、伊索拉、塔科尼克、杜邦和梅加特龙

  1. Suitable for high-speed signal transmission
  2. Especially suitable for applications with high impedance control requirements
  3. Low dielectric constant (Low Dk)
  4. Low loss factor (Low Df)
  5. Stable performance under high frequency, temperature and humidity conditions
  6. A good balance between performance and cost
  7. Suitable for applications above GHz
Teflon_and_flexible_substrates pcb

特氟龙和柔性基板

  1. Best performance but highest price
  2. Particularly suitable for signal speeds above 1.6 GHz
  3. Have very low dielectric constant
  4. Have very low dissipation factor
  5. Low moisture absorption rate
  6. Strong environmental adaptability
  7. Ideal for flexible circuit design

Application of High Frequency PCB

移动通信产品

  1. Widely used in 5G base stations, smartphones and mobile devices
  2. Requires PCBs with low loss and high signal integrity
  3. Supports miniaturization and high-density component integration 
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卫星系统、无线电系统

  1. Used in satellite communication equipment, ground receiving stations and radio transmission equipment
  2. Requires extremely high signal transmission accuracy and reliability
  3. Pay special attention to anti-interference performance and environmental adaptability 
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军事与航空航天

  1. Applied to radar systems, navigation equipment and avionics
  2. Need to meet the requirements of stable operation under extreme environmental conditions
  3. Has the characteristics of high reliability and long service life 
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射频微波

  1. Used in microwave communication equipment, RF power amplifiers and antenna systems
  2. Requires PCB materials to have excellent high-frequency characteristics and low loss
  3. Requires precise impedance control and signal integrity 
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High-density interconnect and high-speed design applications

  1. Applied to servers, high-performance computing devices and data centers
  2. Supports multi-layer wiring and fine line design to achieve high-density wiring
  3. Ensures the integrity and stable transmission of high-speed digital signals 
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