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Friis Transmission Calculator

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Friis Transmission Calculator | RF Link Budget Received Power Solver
dBi
dBi
Please enter valid values.
RESULTS
RECEIVED POWER
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Input Parameters Specification

Power Transmitter (Pt) The raw power output scale injected from the link baseline source directly into the transmitting antenna feed.
Antenna Gains (Gt / Gr) The explicit directional focusing power scale multipliers specified relative to ideal omni-directional antennas.
Link Space Boundary (R) The absolute line-of-sight vector distance separating the matching phase centers of both antenna elements.

Practical Operational Examples

Input Link Profile Set

Transmitter Power: 100.00 mW
Antenna Gains: 2.00 dBi / 2.00 dBi
Carrier Frequency: 2.40 GHz
Link Distance: 10.00 m

Calculated Element States

• Received Power = 3.96205e-4 mW
• The mathematical algorithm handles dynamic geometric free space path expansion scales securely.

Diagrams & Theory

Transmitting antenna Receiving antenna Pt Gt R Pr Gr

The Friis Transmission Equation charts the performance ratio of direct antenna link profiles in unobstructed space. Received power metrics fluctuate with current operational wavelength scales alongside geometric wavefront diffusion boundaries across long spatial fields.

Formulas & Mathematical Logic

Pr = Pt * Gt * Gr * (lambda / (4 * pi * d))²
lambda = 3e8 / Frequency (Hz)

The calculation framework transforms relative dBi components into linear gain elements safely using uniform exponential equations before cross-multiplying link budget variables matrix channels perfectly.

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About this tool

Friis Transmission Calculator is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.