The resin systems of RO4700 dielectric materials provide the necessary properties for ideal antenna performance. RO4700 antenna grade laminates are fully compatible with conventional FR-4 and high temperature lead-free solder processing. These materials do not require the special treatment needed on traditional PTFE-based laminates for plated through-hole preparation. RO4700 laminates are an affordable alternative to conventional PTFE-based antenna materials, allowing for designers to optimize cost and performance.


  • Dielectric constant of 2.55 or 3.0 +/- 0.05
  • Low Z-axis coefficient of thermal expansion at less than 30 ppm/°C
  • Low TCDk
  • Dissipation factors ranging from .0022 to .0029
  • High Tg at greater than 280°C


  • Low insertion loss
  • Dk matched to standard PTFE based antenna offerings
  • Reduced passive inter-modulation (PIM)
  • Consistent circuit performance



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