摘要:
Device for protecting an electronic circuit with detection of a change of electrical reactance. The device (1) for protecting an electronic circuit comprising:- mesh surfaces (2A, 2B) comprising cells (3A, 3B) consisting of a continuous portion of electrical circuit (20) and distributed over the mesh surfaces (2A, 2B), and - at least one electrical circuit, comprising: o an input for injecting an electrical signal, o an output for capturing an electrical output signal, and o between said input and output, at least one of said cells (3A, 3B), the electrical circuit exhibiting an electrical reactance between its input and its output, the protection device (1) comprising a detection module (8) able to detect a change of said electrical reactance.
摘要:
Device and method for confined detection and location of one or more radio devices (4) that are present in a closed or semi-open prohibited zone, characterized in that said device comprises at least the following elements: a linear aerial (1) comprising several orifices Oi suitable for capturing signals emitted by the prohibited radio device or devices and subsequent transmission thereof via the linear aerial to a receiving device (2) linked to the linear aerial (1) via a connector (3), the receiving device being suitable for processing the signals captured by the linear aerial (1) in order to detect the presence of prohibited devices in said zone and to reject detections of authorised devices outside of the said zone.
摘要:
Miniaturized system for detecting and locating an illicit radio transmitter (10) operating in a confined closed environment, zone Z, characterized in that it comprises at least the following elements: • one or more miniaturized detectors (2) furnished with an antenna (2A), which are adapted for detecting a signal emitted by the illicit radio transmitter, • the or the said miniaturized detector(s) (2) are linked with one or more bidirectional relay radio transmitters (3) equipped with a transmit antenna (3A), which are adapted for sending the signalling of the signals detected to at least, • a receiver (6) of a messaging radio network linked to a module (9) for processing the signals, • the radio network operating on a different frequency from the frequency of operation of the illicit radio transmitter.
摘要:
A confined jamming device and method arranged in a coverage area in which may be found prohibited radio communication devices the operation of which it is sought to be prevented, characterized in that said device comprises at least the following elements: • at least one linear element (1) comprising a plurality of openings Oi enabling interference signals to be radiated, the linear aerial being connected to one or more effectors via a connector (3), · said generating effector element or elements (2) being suitable for injecting one or a plurality of interference signals at at least one end of the linear aerial (1), the power flux Ρ j,f of the interference signal J j,f in the band B j,f of a carrier f is selected such that the ratio P Sj,f /P J,f , between the power flux P Sj,f of the signal S j,f potentially usable by the prohibited device on the carrier f and the power flux P J,f, of the signal J f present on the carrier f for preventing operation of the prohibited device are less than an operating threshold Seuil Sj,t of the prohibited device.