Calculators » RF and Microwave » EVM Converter: dB to RMS

EVM Converter: dB to RMS

evm error vector magnitude rf and microwave modulation rms

This page provides a tool for converting Error Vector Magnitude (EVM) between dB and RMS values. It’s useful for understanding the modulation quality of wireless systems.

This page covers EVM(dB) to EVM(rms) converter and vice versa.

EVM (dB) to EVM (rms) Converter

Use the converter below to convert from EVM in dB to EVM in RMS.

Inputs

Outputs

EXAMPLE:

  • INPUT: EVM(dB) = -13
  • OUTPUT: EVM(rms) = 22.38

EVM (rms) to EVM (dB) Converter

Use the converter below to convert from EVM in RMS to EVM in dB.

Inputs

Outputs

EXAMPLE:

  • INPUT: EVM(rms) = 0.8
  • OUTPUT: EVM(dB) = -41.93

Error Vector Magnitude (EVM) Equation

EVM is a crucial metric for assessing the modulation quality in wireless systems. Generally, a higher negative EVM value in dB indicates better performance.

The following equation is used for the Error Vector Magnitude (EVM) calculation:

EVM,Error Vector Magnitude calculator