Reactive near-field, Radiating near-field, Far-field regions

Input

Frequency	\(\nu \)		GHzMHzKHzHz →
Wavelength	\(\lambda \)		millimetercentimetermeterkilometer→
Largest Dimension of Antenna	\( D\)		millimetercentimetermeterkilometer

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Output

Reactive Near Field	\(\leq\)	____	millimetercentimetermeterkilometer
Radiating Near Field	\(\leq\)	____	millimetercentimetermeterkilometer
Far Field	\(\geq\)	____	millimetercentimetermeterkilometer

---

Formula

\(Reactive\, Near\, Field \leq 0.62\sqrt{ \frac{D^3 }{\lambda }}\)

\(Radiating\, Near\, Field \leq 2\frac{D^2}{\lambda}\)

\( Far\, Field \geq 2\frac{D^2}{\lambda}\)

Where:

\(\nu \) = Frequency

\(\lambda \) = Wavelength

\(D\) = Largest Dimension of Antenna

Other Related Calculator:
- Dipole Antenna Length Calculator \ Radiation Pattern

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