Davies equation

28 year-old Painting Investments Worker Truman from Regina, usually spends time with pastimes for instance interior design, property developers in new launch ec Singapore and writing. Last month just traveled to City of the Renaissance. The Fraunhofer distance, named after Joseph von Fraunhofer, is the value of:

$d={{2D^{2}} \over {\lambda }},$

where D is the largest dimension of the radiator (or the diameter of the antenna) and ${\lambda }$ is the wavelength of the radio wave. This distance provides the limit between the near and far field.

See also

• Fresnel number
• Fresnel diffraction and Fraunhofer diffraction
• Antenna measurement