This calculator converts a power level expressed in dBm into equivalent voltage in dBµV. This conversion is essential for comparing measurements between power and voltage systems, especially in RF applications and compliance testing.
It is particularly useful for RF engineers, signal measurement technicians, and high-frequency circuit designers who work with instruments that express levels in different units.
Formula
dBµV = dBm + 90 + 20 × log10(√Z0)
Explanation of the formula
- dBm represents power measured in decibels-milliwatts.
- Z0 is the characteristic impedance of the system, typically 50 Ω.
- The term 90 corresponds to the difference between the power reference (mW) and voltage (µV).
- The root of Z0 makes it possible to connect the power to the equivalent voltage in the same system.
0 dBm to dBµV conversion
Input : Power = 0 dBm, Impedance = 50 Ω
Output : Voltage ≈ 107 dBµV
Benefits and uses
- Easily converts power levels to voltage.
- Useful for calibrating RF measurement equipment.
- Allows you to compare results between different standardized units.
- Convenient for signal analysis and laboratory testing.