Method and device of transmission of waves

Details Method and device of transmission of waves Method and device of transmission of waves

H - Electricity

04

B

H04B 7/005 (2006.01) H01Q 3/26 (2006.01) H01Q 3/44 (2006.01) H01Q 9/32 (2006.01)

Patent

CA 2657708

Method for focusing an electromagnetic or acoustic wave on a point near which one or more diffusers are placed, comprising a learning step in which the pulsed responses hij (t) between the focus point and each antenna (2) of the network are determined. Waves corresponding to signals Sji(t) = Si(t) ~ hij(-t), where Si(t) is a function of time and hij(-t) is a temporal inversion of the pulsed response hij(t), can then be transmitted from said antennas (2) of the network.

Procédé pour focaliser une onde électromagnétique ou acoustique en un point au voisinage duquel sont placés un ou plusieurs diffuseurs, comprenant une étape d'apprentissage dans laquelle on détermine les réponses impulsionnelles hij (t) entre le point de focalisation et chaque antenne (2) du réseau. On peut ensuite faire émettre depuis lesdites antennes (2) du réseau, des ondes correspondant à des signaux S ji (t) = S i (t) ~ h ij (-t), où Si(t) est une fonction du temps et hij(-t) est une inversion temporelle de la réponse impulsionnelle hij(t).

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