An RF shield for enclosing a robotic tester unit while testing mobile devices. In some embodiments, the RF shield includes at least two conductive RF shield layers separated by an insulator material. In some embodiments, an inner surface of the RF shield is further lined with a RF absorbing material to absorb EM radiation generated within the RF Shield enclosure. In some embodiments, the internal components required for testing, e.g. the robot, are powered via a power conditioner that removes from the power source frequencies above a threshold, e.g. 100 Hz, to eliminate RF signals absorbed into the power lines via radio towers and/or intentionally induced into the power lines to control power equipment.

An ESD protection device is manufactured such that its ESD characteristics are easily adjusted and stabilized. The ESD protection device includes an insulating substrate, a cavity provided in the insulating substrate, at least one pair of discharge electrodes each including a portion exposed in the cavity, the exposed portions being arranged to face each other, and external electrodes provided on a surface of the insulating substrate and connected to the at least one pair of discharge electrodes. A particulate supporting electrode material having conductivity is dispersed between the exposed portions of the at least one pair of discharge electrodes in the cavity.

Some embodiments include a privacy/security apparatus for a portable communication device that includes a housing assembly configured to at least partially attenuate at least one of sound energy, acoustic energy, and electromagnetic energy including light, optical, and IR energy and RF radiation from passing through the housing assembly. The housing assembly includes a Faraday cage with two or more portions, and at least one protective shell coupled to or forming at least one aperture. The at least one aperture is configured and arranged to at least partially enclose the portable communication device so that at least a portion of the portable communication device is positioned within at least one portion of the Faraday cage, and the at least one seal coupled or integrated with the protective shell. The housing assembly can be an articulating assembly, a sliding assembly, and can include an active acoustic jamming or passive acoustic attenuation element.

The present invention relates to a shield apparatus and a shield method for measuring a subtle magnetic field. More specifically, the present invention relates to a shield apparatus having a precise magnetic sensor therein, for shielding an external magnetic field in a subtle magnetic field measurement apparatus including a magnetic field generation apparatus for exciting a sample, the shield apparatus for measuring a subtle magnetic field, including: a shield wall provided with a high-conductivity metal layer of high conductivity being partitioned into a plurality of segments and having a high-frequency shield property and a closed high-permeability soft magnetic layer spaced apart from the high-conductivity metal layer by a predetermined distance, so as to seal a measurement space.

A curtain for shielding an electromagnetic field may include a plurality of strip elements. A first strip element and a second strip element of the plurality of strip elements may have an electrically conductive layer. In a shielding configuration of the curtain, the electrically conductive layer of the first strip element is electrically connected to the electrically conductive layer of the second strip element and/or to an electrical connecting terminal for a reference potential. The plurality of strip elements can be variably positioned against one another.

Some embodiments include a privacy/security apparatus for a portable communication device that includes a housing assembly configured to at least partially attenuate at least one of sound energy, acoustic energy, and electromagnetic energy including light, optical, and IR energy and RF radiation from passing through the housing assembly. The housing assembly includes a Faraday cage with two or more portions, and at least one protective shell coupled to or forming at least one aperture. The at least one aperture is configured and arranged to at least partially enclose the portable communication device so that at least a portion of the portable communication device is positioned within at least one portion of the Faraday cage, and the at least one seal coupled or integrated with the protective shell. The housing assembly can be an articulating assembly, a sliding assembly, and can include an active acoustic jamming or passive acoustic attenuation element.

An electrical monitoring system is configured to monitor one or more systems of a vehicle. The electrical monitoring system may include a housing, a loop resistance test (LRT) unit contained within the housing, a network analyzer unit contained with the housing, and a time domain reflectometer (TDR) unit contained within the housing. The LRT unit is configured to conduct loop resistance tests with respect to the system(s) of the vehicle. The network analyzer unit is configured to conduct network analysis with respect to the system(s) of the vehicle. The TDR unit is configured to conduct time domain reflectometry with respect to the system(s) of the vehicle.

A radiofrequency filter utilizing a common mode choke both as a traditional common mode choke as well as the inductance in a low pass filter. Filter topology as well as component selection is optimized for wide band operation. Common mode chokes allow differential currents to pass with little attenuation while common mode currents are effectively presented with an inductance in the common current path. This inductance is used in a low pass filter configuration to present an even higher attenuation to common mode currents. The use of multiple chokes and/or differing core materials contributes to wider band operation without pronounced resonances. The capacitance used in the low pass filter is connected in a way as to reduce its effect on the data signals while still being effective in filtering.

An RF shield for enclosing a robotic tester unit while testing mobile devices. In some embodiments, the RF shield includes at least two conductive RF shield layers separated by an insulator material. In some embodiments, an inner surface of the RF shield is further lined with a RF absorbing material to absorb EM radiation generated within the RF Shield enclosure. In some embodiments, the internal components required for testing, e.g. the robot, are powered via a power conditioner that removes from the power source frequencies above a threshold, e.g. 100 Hz, to eliminate RF signals absorbed into the power lines via radio towers and/or intentionally induced into the power lines to control power equipment.

A shielding box for providing high frequency electromagnetic shielding where a first housing part and a second housing part are connected to each other by a hinge so as to be displaceable between an open position and a closed position. Further, a lifting mechanism is used which has at least one lifting stud and at least one guide, the guide being mounted to one of the housing parts and the lifting stud being mounted to the guide so as to be displaceable between an extended position and a retracted position in a direction which is generally perpendicular to a plane along which the first and second housing parts abut at each other in the closed position. The lifting stud is adapted for displacing the other one of the housing parts.