An electronic diode is a nonlinear semiconductor circuit component that allows conduction of electrical current in one direction only. A component with similar functionality for electromagnetic waves, an electromagnetic isolator, is based on the Faraday effect of rotation of the polarization state and is also a key component in optical and microwave systems. Here we demonstrate a chiral electro...

RFID applied to vehicular identification operates under a complex electromagnetic environment; the radio waves emitted by the reader, propagate, attenuate and join to the reflected waves from the ground and adjacent vehicles, being received by the antenna tag; part of the electromagnetic wave signal is backscattered/reflected back to the reader. In order to obtain a propagation model is carried...

Astronomical observations in the electromagnetic window – microwave, radio and optical – have revealed that most of the Universe is dark. The only reason we know that dark matter exists is because of its gravitational influence on luminous matter. It is plausible that a small fraction of that dark matter is clumped, and strongly gravitating. Such systems are potential sources of gravitational r...

This article presents some new experimental data for study the shielding effect of electromagnetic wave. The frequencies of electromagnetic wave are mainly focused on emission of daily electrical equipments, which are normally called “low frequency electromagnetic waves”. In this work, a water pump with maximum magnetic field intensity of ca. 2300 mG was applied as emission source of the electr...

An electromagnetic truncated Gaussian pulse propagates through a waveguide with piecewise diierent dielectric constants. The waveguide contains a barrier, namely a region of a lower dielectric constant compared to the neighboring regions. This setup yields a purely imaginary wave vector in the region of the barrier ('electromagnetic tunneling'). We exactly calculate the time-dependent Green's f...

During the seismic wave propagation through the crust, the electromagnetic pulse can originate due to MHD conversion in this conductive medium. On the assumption of simple models of seismic wave excitation and attenuation, the problem is reduced to the analysis of a diffusionlike equation for a vector potential function. In this way, we need to change the classical gauge condition. A semianalyt...

This paper presents a new theory of radiation and propagation of electromagnetic (EM) waves: EM waves caused by the same cause will never cross each other. It discloses a fundamental mistake in the established assumptions and method of analysis of radiation and propagation problems of electromagnetic waves and application of superposition principle. It implies invalidation of the established so...