Reflection Coefficient Calculator

Reflection Coefficient Calculator

In electrical engineering, the reflection coefficient is a parameter that defines how much of the electromagnetic wave is reflected due to the impedance discontinuity in a transmission path.

This online reflection coefficient calculator calculates the reflection coefficient (Γ) by entering the value of the characteristic impedance Z_o (in ohms) and load impedance Z_L (in ohms).  

What is the reflection coefficient?

The reflection coefficient is the ratio of the amplitude of the reflected wave to the amplitude of the incident wave, with each expressed as phasors, and the symbol of this coefficient is Γ (capital gamma). The reflection coefficient is a function of location and the reflection coefficient at the load is dependent on the load impedance and the transmission line characteristic impedance. When load impedance is equal to the characteristic impedance of the wave, there is no reflection on the transmission line.

How to calculate reflection coefficient?

Reflection coefficient (Γ) is calculated by using the following formula.

Where,

Γ = Reflection coefficient

Z_o = Characteristic impedance in ohms

Z_L = Load impedance in ohms 

V^- = Amplitude of reflected wave in V

V⁺ = Amplitude of incident wave in V