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.

Radiated power (W)

Required number input.

Accepted power (W)

Required number input.

Calculate radiation efficiency as radiated power divided by accepted power ×100. Mismatch loss before power is accepted at the antenna port is not included. 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.

• Antenna formulas assume stated frequency, impedance match, polarization, efficiency, aperture, and propagation geometry. Nearby objects, ground, feed loss, multipath, regulatory averaging, near-field conditions, and pattern variation can make free-space or ideal-aperture results inaccurate.
• 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.

• EIRP Calculator

  Calculate effective isotropic radiated power from transmitter power, antenna gain, and cable loss.

• Transformer Total Loss

  Add winding copper, core iron, and other measured transformer losses in watts. This is a loss budget sum, not an efficiency estimate without input or output power.

• ADC LSB Voltage

  Calculate one ideal ADC code width as full-scale input span divided by 2^N. Full-scale span is the high-to-low range, not necessarily the reference voltage for every ADC topology.