Below is a calculation tool to help determine the received field strength (in V/M or dBµV/m) and convert that result into power density (µW/m², mW/m², W/m², or µW/cm² ).

Field intensity or power density calculations are necessary when:

• estimating electromagnetic interference (EMI) effects
• determining potential radiation hazards (personnel safety and RF exposure)
• measuring or verifying specifications

Calculations:

Received Signal:	dBµV dBm
Antenna Factor Antenna Gain (dBi) :	dB/m
Frequency:	MHz
Cable Loss:	dB
Preamplifier Gain:	dB

Field intensity	dBµV/m V/m
Power density	W/m2 mW/m2 µW/m2 µW/cm2

Formulas:

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Field intensity (dBµV/m) = RS(dBµV) + AF + CL - G

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