This converter transforms a power expressed in dBm into an equivalent voltage in dBµV. It is often used to compare power and voltage levels in RF systems, measurement equipment and communications networks.
Formula
dBµV = dBm + 90 + 20 × log10(√Z0)
Explanation of the formula
The calculation is based on the relationship between power (in dBm) and voltage (in µV) in a system with characteristic impedance Z0, generally 50 Ω. The +90 term converts the power from the mW reference to µV, while the square root of Z0 adjusts the result according to the system impedance.
Uses of the calculator
- Fast conversion between power and voltage for RF systems.
- Useful for measurements with spectrum analyzers or signal generators.
- Employed in the fields of broadcasting, telecommunications and CEM.
- Allows you to check consistency between units of measurement in the laboratory.