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.

Misalignment Degrees (°)

Required number input.

Ideal linear-polarization mismatch loss from the relative angle between transmit and receive polarization axes. 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]

Loss Decibels (dB)

The resulting loss decibels 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.

• Gain From Aperture

  Compute the linear antenna gain as G = 4 x pi x A x eta / lambda^2 with aperture efficiency eta between zero and one, defaulting to 0.55.

• Antenna Radiation Efficiency

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

• Antenna Sidelobe Level

  Sidelobe level relative to the main-lobe peak from linear same-reference power measurements.