Quick Answer
Calculate Friis Free-Space Path Loss Transmission Equation
Calculator
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Find Engineering Solutions →Result Interpretation
Friis Free-Space Path Loss Transmission Equation calculator computes Received Power in W using the defined engineering formula and the input values provided. Received Power is expressed in W. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Transmitted Power = 1
- Transmitter Antenna Gain = 1
- Receiver Antenna Gain = 1
- Link Distance = 1000
- Signal Wavelength = 0.3
Expected Result:
- Received Power = 5.7295779513082E-9
Engineering Interpretation:
Under the given input conditions, the calculated result is: Received Power = 5.7295779513082E-9 W.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
received power = transmitted power * transmitter antenna gain * receiver antenna gain * pow(signal wavelength / (4 * 3.14159265358979 * link distance), 2)Formula family: formula_telecom_friis_transmission_equation_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| transmitted_power | Transmitted Power | INPUT | Transmitted Power |
| antenna_gain_tx | Transmitter Antenna Gain | INPUT | Transmitter Antenna Gain |
| antenna_gain_rx | Receiver Antenna Gain | INPUT | Receiver Antenna Gain |
| distance | Link Distance | INPUT | Link Distance |
| wavelength | Signal Wavelength | INPUT | Signal Wavelength |
| received_power | Received Power | OUTPUT | Received Power |
Calculation Steps
- Enter the transmitted power in W.
- Enter the transmitter antenna gain in dimensionless.
- Enter the receiver antenna gain in dimensionless.
- Enter the link distance in m.
- Enter the signal wavelength in m.
- Step 1: Compute received power.
- Read the received power (W) from the results.
Engineering Summary
Calculate Friis Free-Space Path Loss Transmission Equation
Frequently Asked Questions
What does this calculator calculate?
The Friis Free-Space Path Loss Transmission Equation calculator estimates Received Power based on the input parameters you provide
Why is transmitted power important in this calculation?
transmitted power is directly proportional to received power. When you enter transmitted power in W, the calculator uses it in the engineering formula to compute the output
How should I interpret the result received power?
The calculator outputs received power in W. For larger power values, divide by 1000 to express the result in kW, or by 745.7 for horsepower. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Transmitted Power (W), Transmitter Antenna Gain (dimensionless), Receiver Antenna Gain (dimensionless), Link Distance (m), Signal Wavelength (m). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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