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Formula For dBm
Answer:
Formula dBm = 10 log(Power Out/1mW) .
A transmitter with a 50W output can be expressed as a 17 dBW output or 47 dBm.

Query and Reply
Why we use dbm rather Watt or Milliwatt?
Manoj Dagar On March 29, 2020

Reply:

Answer: To maintain the more accuracy we prefer to use dBm rather than Watt or Mill watt

Description:
dBm or decibel-milliwatt is an unit of electrical power in decibels (dB), referenced to 1 mill watt (mW)

dB :is stand for Decibel
dBm:is Decibel-mill watts

1 milliwatt = 0 dBm:

1W = 1000mW = 30dBm

P(dBm) = 10 · log10( P(mW) / 1mW)

dBm is smaller parameter than Watt & Mill watt.

Comments:

General Comments:

Why we use dbm rather Watt or Milliwatt?
By:Manoj Dagar


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