App description

RF Power Density Calculator

Enter the value and click on "Calculate". The result will be displayed.

Calculation formula

The following formula is from: US Environmental Protection Agency, Announcement No. 65 of the US Federal Communications Commission's Engineering Technology Department.

\(S=\frac {P×G}{4×PI×R^2}\)

• S---power density
• P---the input power of the antenna
• G---Power gain of the antenna
• R---distance to the radiation center of the antenna

Usage example

Input data:

input power of the antenna: 50mW;

power gain of the antenna: 0.5;

distance to the radiation center of the antenna: 50cm

Output: Power Density: 0.00179mW/cm²