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We review the electromagnetic scalar and vector potentials from the point of view of the Generalized Fredholm Integral Equations. Then we revise two sensitive concepts as the retarded and advanced Green functions. Provided we have developed the appropriate desired equations; we go to the problem of left-hand materials conditions for optimized broadcasting. We give also an academic but simple example...
We recall some results about the confinement of electromagnetic field from the Fredholm's equations properties perspective. Then we review some relations between the Maxwell equations and the generalized Fredholm's equations and show the equivalence between these two points of view when we analyze the change in the broadcasting conditions from confined electromagnetic field to travelling waves, underlying...
Under the concept of the so called Resonant Technology, recently we had proposed a device that can transport a lot of different signals, all of them of similar frequencies although different recording time, packed around the resonant frequencies. With the aim to implement physically the device, we had developed an algorithm, which is inserted in a FPGA to build information packs and send it. Also,...
The very fast variations on the real propagation conditions for electromagnetic waves can be simulated by a plasma sandwich model consistent in three iterated plasma layers: unmagnetized-magnetized-unmagnetized, in which we can establish resonant conditions (left-hand material conditions) by tuning the magnetization and electric potential intensity. In this paper we show how to prevent drastically...
Nowadays, the question about the recovery of lost information due to the presence of the so called electromagnetic evanescent waves, seems to be explained enough. But in fact we know that travelling and evanescent waves both originate from very different stems of integral or differential equations and whose behavior is classified as mutually discriminating; that is, we cannot have simultaneous validity...
We have shown [1] that some electromagnetic systems allow specific frequencies to satisfy special equivalent conditions to make use of a left hand material. We called these frequencies resonances because of their properties, similar to those solutions of the homogeneous Fredholm's equation for nuclear physics. But the process of information transmission requires not only the envoy of a limited number...
Electromagnetic Time Reversal Vector formalism [1, 2] can be employed not only to the purpose of achieve subwavelength focusing. We can go far away of this initial goal and take the formalism as the starting point for analyzing the behavior of discrete electromagnetic systems in a regime that represents special but interesting physical usefully situations. The advantage over other possible approximations...
We define, by a natural way, a velocity field at a space region occupied by an electromagnetic field. By using that velocity field we can obtain a relativistic expression for drift velocity of an electrically charged particle in presence of an electromagnetic field. Taking in account temporal components and the temporal space of the energy momentum tensor of electromagnetic field, and also his Lorentz...
In a recent work we found equivalence between the Time Reversal techniques and the use of Meta-materials in order to achieve the overcoming of the diffraction limit. Now we present the vector generalization of a formalism developed in a former study of Discrete Acoustic Time Reversal. The ulterior purpose is to apply it to electromagnetic waves, not only as an alternative to the use of left-hand materials...
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