Alcatel Cit

Thomson-csf Communications

Stephane Lamesch

Alain R Le Mehaute

Denis Cottevieille

Jean-Louis Braut

A device for transmitting electrical energy or electrical signals comprises a core, an outer conductor and a threshold characteristic dielectric material between the core and the outer conductor. The dielectric material comprises, at least in part, a material that is insulative if the electric field is below a particular threshold and conductive when the electric field exceeds a particular threshold, so as to prevent the transmission of signals for which the electric field is above the threshold. The configuration of the core and/or of the outer conductor is such that the external electric field threshold from which the material becomes conductive is significantly less than the intrinsic breakdown threshold of the material.

Electrical conductor protected against electromagnetic interference exceeding a threshold

An electrical signal transmission device includes a core and an outer conductor separated by a dielectric. To eliminate external radiated interference, for which the device behaves like a receiving antenna, the core, the outer conductor and/or the dielectric feature discontinuities forming impedance discontinuities. The discontinuities are chosen to prevent propagation towards the core of external interference waves in a particular range of frequencies.

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La Garenne Colombes, France

Stephane Lamesch