Impedance Formulas

2 Parallel Plates Coaxial Cylinders

The formulas on this page allow one to calculate the impedance for certain given geometries.  More complex problems typically require one to model the geometry and solve using Finite Element Analysis.

 

2 Parallel Plane Plates

Diagram for Parallel Plate Impedance Calculation

Diagram for Parallel Plate Impedance Calculation

Equation for Parallel Plate Impedance Calculation

Equation for Parallel Plate Impedance Calculation

mis the permeability (H/m)

e is the permittivity (F/m)

eis the permittivity of free space (F/m)

er is the relative permittivity of the dielectric

d is the distance between the electrodes (m)

w is the width of the electrodes (m)

 

2 Coaxial Cylinders

Diagram for Coaxial Cylindrical Impedance Calculation

Diagram for Coaxial Cylindrical Impedance Calculation

Equation for Coaxial Cylindrical Impedance Calculation

Equation for Coaxial Cylindrical Impedance Calculation

mis the permeability (H/m)

e is the permittivity (F/m)

eis the permittivity of free space (F/m)

er is the relative permittivity of the dielectric

a is the radius of the inner cylinder

b is the radius of the outer cylinder

 

 


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