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 Watts (W)

Required number input.

Dc Input Watts (W)

Required number input.

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

Efficiency Percent (%)

The resulting efficiency percent 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.

• PAE Calculator

  Compute power added efficiency percent as (RF output - RF input) / DC supply x 100.

• PA Saturated Power

  RF output power at an observed saturated operating point from measured sinusoidal RMS output voltage into a resistive load.

• Transformer Efficiency At Load

  Real output-power fraction of real input power at the specified transformer operating point.