Power Density Calculator

Fairview Microwave's Power Density Calculator is designed to give the power density, in Watts per square meter, at a given distance, output power and antenna gain. Please note that this calculator is only valid for far-field calculations.

Calculation

Output Power:

Gain (linear):

Distance:

Result:

Power Density:

Power Density in radar applications, is typically described by the non-directional power density multiplied by the gain of the radar. Notice that the distance D is an exponential component to the equation, due to the three-dimensional "spreading" of the waveform as it propagates through space.

**Note: All of our calculators allow SI prefix input. For example, if you wish to input "25000000", just type "25M" instead. See the quick-reference table below for all compatible SI prefixes.

Prefix	Symbol	Value
Tera	'T'	10¹²
Giga	'G'	10⁹
Mega	'M'	10⁶
kilo	'k'	10³

Prefix	Symbol	Value
pico	'p'	10^-12
nano	'n'	10^-9
micro	'u'	10^-6
milli	'm'	10^-3

Power Density Calculator

Calculation

Result:

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