Calculators » RF and Microwave » Twin Wire Line Calculator

Twin Wire Line Calculator

transmission line twin wire impedance capacitance inductance

This page provides a Twin Wire Line Calculator.

Inputs

Outputs

EXAMPLE:

  • INPUTS:
    • Dielectric constant (εr) = 2.4
    • Permeability constant (μr) = 1
    • Spacing between conductors (‘s’) = 15 meters
    • Diameter of conductor (d) = 5
  • OUTPUTS:
    • L (H/m) = 7.05e-7
    • C (F/m) = 3.78e-11
    • Z (Ω) = 136.45

Twin Wire Line Equation

A twin wire line is typically a flat, parallel, and balanced type of transmission line. It’s a common choice, especially in the VHF frequency range. The wires are usually encased in a plastic ribbon made of polyethylene, making them both strong and flexible.

The spacing between the two conductors is carefully maintained to minimize RF radiation.

The following equations or formulas are used for this Twin Wire Line calculator:

Twin Wire Line Equation