Effortlessly calculate the inductance of coaxial cylindrical tubes using our precise online calculator. Ideal for engineers and hobbyists working with RF cables, transmission lines, and designing custom inductors. Understand the factors influencing coaxial cable inductance and ensure optimal circuit performance.
Formula:
Formula for Inductance of Coaxial Cylindrical Tubes
The inductance (L) of a coaxial cylindrical tube of length (l) with an inner conductor radius (a) and an outer conductor inner radius (b) is given by:
L = (μ / (2π)) * ln(b/a) * l
- L: Inductance in Henries (H)
- μ: Absolute permeability of the dielectric material between conductors (H/m)
- μ = μ₀ * μᵣ
- μ₀: Permeability of free space (4π × 10-7 H/m)
- μᵣ: Relative permeability of the dielectric material (dimensionless)
- b: Inner radius of the outer conductor (or outer radius of the inner conductor) (m)
- a: Radius of the inner conductor (m)
- l: Length of the coaxial structure (m)
This formula assumes a uniform current distribution and neglects fringe effects at the ends.