Turning to the downlink radiations, throughout this study we assume that the electric field emitted by the base station is considered as a uniform plane wave
. Similarly to the uplink case, the ambient electric field can be composed of single or multiple plane waves arriving form random directions, with various propagation characteristics.
First, it is assumed that the wave incident on the sample is a uniform plane wave
. This is an approximation, as the wave emitted from the antenna is spherical and only truly planar at the limit of infinite distance.
Supposing that an initial excitation of a uniform plane wave exists on the aperture of the concave-spherical mirror, then utilizing the ISCF algorithm and after three hundred transits, the electromagnetic field distributions in the cavity reach the steady stage.
To achieve the high-order Bessel-Gauss mode, an excitation source of a uniform plane wave, which is not even symmetry but odd symmetry about the central axis z, is required on the concave-spherical mirror.
The uniform plane wave
solution can be obtained from Equation (1):
Anwane gives readers sufficient background in each section and in the appendix to handle vector analysis, the electric field, density of displacement flux, energy and potential, Poisson's and LaPlace's equations, the magnetic field, Maxwell's equations for time-varying fields, the uniform plane wave
and the wave guides.
Antenna measurements require that the AUT be illuminated by a uniform plane wave
. This requirement is approximately achieved in the far-field for a range length r > 2[D.sup.2]/[lambda], which, in many cases, dictates large distances.
A uniform plane wave
with electric field of 20 V/m is propagating horizontally (parallel to the ground plane) shining directly into the slotted aperture.
A 2 GHz uniform plane wave
with electric field polarized along z axis is impinging onto the reciprocal cloak along y direction.
The fundamental laws of electromagnetic fields are introduced in Chapter 4, along with wave equations and uniform plane wave
This paper addresses the safety aspects of people exposed to uniform plane waves
in the frequency range from 900 MHz to 5 GHz.
Following introductions to fundamental units and prefixes, electrical sources and fundamental quantities, sinusoidal waves, and complex numbers, his 11 chapters cover vectors and fields, basic laws of electromagnetics, uniform plane waves
, transmission lines, modified Maxwell's equations and potential functions, source in infinite space, electrostatic fields, magnetostatic fields, waveguides and cavity resonators, and numerical techniques.