The Friis-Transmission equation relates the power received to the power transmitted between two antennas separated by a distance R > 2 (D2/ƛ) , where D is the largest dimension of either antennas.
Let...
The space surrounding an antenna is usually subdivided into
three regions:reactive near-fieldradiating near-field (Fresnel) andfar-field (Fraunhofer) regions
Although no abrupt changes in...