Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

RF output power (W)

Required number input.

RF input power (W)

Required number input.

DC supply power (W)

Required number input.

Compute power added efficiency percent as (RF output - RF input) / DC supply x 100. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Power added efficiency (%)

The resulting power added efficiency returned as a number.

• RF gain, noise, compression, intercept, mismatch, sensitivity, and link calculations require consistent impedance, bandwidth, frequency, reference plane, temperature, modulation, and cascade ordering. Datasheet values at different conditions cannot be combined without correction.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• PA Backoff Efficiency

  Drain efficiency at a power-backoff operating point from RF output and DC input power.

• Transformer Efficiency

  Compute transformer efficiency percent as output power divided by input power times 100.

• Efficiency Percent

  Compute the percentage efficiency of a power conversion from output over input power.