David Campbell Microstrip Calculator Microstrip Calculator

Stripline Calculator

With thanks to David Campbell for the use of this calculator

Substrate Parameters

  • εr: Relative permittivity of the substrate.
  • Tanδ: Loss tangent of the substrate. This parameter is used for the loss calculations. The higher the value, the larger the loss.
  • Rho: Conductor resistivity relative to copper. This parameter is used for the loss calculations. When in doubt, use 1 for copper, .946 for silver, or 1.45 for gold.
  • Height: Height of the substrate.
  • Thickness: Thickness of the microstrip conductor. This can be set to zero, but the calculated loss will not include conductor losses.
  • Frequency: Frequency at which the microstrip transmission line is analyzed or synthesized.

Analysis/Synthesis Values

  • Ω
  • deg.
  • dB

Loss is calculated as a combination of dielectric loss and conductor loss at the analyzed/synthesized length. If the conductor thickness is set to zero, the loss will only include the dielectric loss component.


K.C. Gupta, "Computer-Aided Design of Microwave Circuits", 1981

Nguyen, "Analysis Methods for RF, Microwave, and Millimeter-Wave Planar Transmission Line Structures", 2001