Decibel Milliwatts (dBm)
- Decibel Milliwatts (dBm) are used to express decibels in terms of milliwatts.
- It helps to predict the actual power output of a signal.
- dBm is commonly used to measure the signal strength of wires and cables.
- 1 dBm is equivalent to 0.001 watts or one milliwatt.
- dBm is a dimensionless quantity, similar to decibels.
The formula is given by
SdBM = 10 log10 P
where
P is Power
Difference between dB, dBM and dBi
Decibel is the unit of sound intensity. It is the ratio of two physical quantities and then the logarithm of the ratio is taken. It is also used in electricity to measure current, voltage, and power.
Table of Content
- What is Decibel
- Decibel Milliwatts (dBm)
- Decibel Relative to Isotropic Gain(dBi)
- Difference between dB, dBm, and dBi
- Solved Examples on dB, dBm, and dBi
- dB, dBm, and dBi- FAQs