Shenzhen Fitcare Electronics Co.,Ltd.
TEL: +86-755 23729876
Add: 6th Floor(south), Building A, Dingxin Science Park, 67 District, Bao’an, Shenzhen, China
Power is defined as the work done per unit time. The basic unit is watt (W), 1W is equal to 1 joule of work done in 1 second. Commonly used power units are megawatts (1MW=10^6W), kilowatts (1KW=10^3W), milliwatts (1mW=10-3W), microwatts (1μW=10-6W), picowatts (1Pw= 10-12W).
Another commonly used power unit is expressed in decibel milliwatts (dBm). It takes 1 milliwatt as the reference level P0=1mW, and the actual power value P (mW) is compared with P0 and then taken the logarithm. This is the absolute unit of power.
Decibel watts (dBW) can also be used as the power unit, at this time P0=1W, that is, 1 dBW=30 dBm.