Device for receiving and/or emitting a wave, a system comprising the device, and use of such device

摘要

A device (10) for receiving and/or emitting an electromagnetic wave, comprising a medium (11) of dielectric material, a plurality of passive resonant elements (12) incorporated inside said medium, the plurality of passive resonant elements (12) comprising a frequency band-gap, two neighbor passive resonant elements belonging to the plurality being spaced apart from each other of a first distance lower than λ/4, and at least one active resonant element (13) incorporated inside said plurality, said active resonant element (13) having a second structure different from a first structure of the passive resonant elements (12), so that said active resonant element (13) has at least a second resonance frequency comprised inside the frequency band-gap of said plurality of passive elements (12).

主权项

1. A device for receiving and/or emitting an electromagnetic wave having a free space wavelength λ0 between 1 mm and 10 m, the device comprising:
a medium of dielectric material, in which the free space wavelength λ0 corresponds to a wavelength λ inside the dielectric medium; a plurality of passive resonant elements incorporated inside the dielectric medium, each of the plurality of passive resonant elements having a first structure defined by at least a first shape and first physical parameters, and each of the plurality of passive resonant elements having at least a first resonance frequency (f1) and comprising a frequency band-gap (Δf), in which two neighbour passive resonant elements are spaced apart from each other by a first distance (d1) lower than λ/4; and at least one active resonant element incorporated inside the plurality of passive resonant elements, the active resonant element being spaced apart from a passive resonant element by a second distance (d2) lower than λ/4, the active resonant element having a second structure defined by at least a second shape and second physical parameters, the second structure being different from the first structure so that the active resonant element has at least a second resonance frequency (f2) comprised inside the frequency band-gap (Δf) of the plurality of passive resonant elements, wherein, the active resonant element is connected to an electronic device for receiving or emitting a signal (S) having at least a frequency component substantially equal to the second frequency (f2), wherein the active resonant element is in proximity of a lateral surface (LS) of the medium.