There are provided an electromagnetic wave shielding material including a multilayer structure having, between two metal layers, a high magnetic permeability layer that is an insulating layer in which a real part of a complex specific magnetic permeability at a frequency of 100 kHz is 30 or more, and an electronic component and an electronic apparatus which include the electromagnetic wave shielding material.

An electromagnetic wave shielding film according to one embodiment of the present invention comprises a substrate and an electrode pattern, which is provided on one surface of the substrate and contains metal particles, wherein the metal particles comprise first particles having sizes within a first range and second particles having sizes within a second range that is smaller than the first range, respectively, the number of second particles is greater than the number of first particles, and at least one first particle is mixed in among the second particles.

Systems, methods, and computer-readable media are disclosed for capacitive touch sensing using system-in-package components. In one embodiment, a device may include a flexible printed circuit, and a first system-in-package disposed on a first side of the flexible printed circuit. The first system-in-package may include a first molding compound, and a first electromagnetic interference shield disposed around an outer surface of the first molding compound. The device may include a first capacitive touch sensor, and a first stiffener disposed on a second side of the flexible printed circuit, where the first stiffener can be formed of a conductive material, and can be electrically coupled to both the flexible printed circuit and the first capacitive touch sensor. The first capacitive touch sensor may be configured to detect a change in capacitance via a change in electric field at the first electromagnetic interference shield.

For an electronic circuit module (1), more particularly a circuit module that is used as an inverter for an electrical machine or as a converter, comprising at least one electronics unit (4), more particularly a power electronics unit, wherein the electronics unit (4) comprises at least one carrier substrate (5) and at least one electrical and/or electronic component (32) provided on the carrier substrate (5), at least one first connection point (10) and at least two second connection points (20) are formed on the carrier substrate (5) on a substrate top side (7) of the carrier substrate (5), the first connection point (10) is provided between the two second connection points (20), and wherein the electronic circuit module (1) further comprises at least one electrical or electronic part (8) having at least one first bus bar (12) for electrically contacting the electronic part (8) and at least one second bus bar (22) for electrically contacting the electronic part (8), the invention proposes that an electrically conductive bridge element (40) electrically conductively interconnects the two second connection points (20), the bridge element (40) passing, bridge-like, over the first connection point (10) and being spaced apart from the first connection point by means of a gap and electrically isolated, the first connection point (10) being electrically conductively connected to the first bus bar (12) by first connection elements (11) and the second connection point being electrically conductively connected to the second bus bar (22) by second connection elements (21).

A system for at least partially preventing passage an intrusive electromagnetic field into an internal volume of a structure is provided. The system includes a plurality of shielding modules positionable adjacent one another on an exterior surface of the structure for covering at least a portion of the exterior surface. Each of the shielding modules including a sensor and a shielding coil positioned around the sensor. The sensor is configured to measure the intrusive electromagnetic field and generate a signal based on the measured field. The system further includes a control unit in communication with each of the shielding modules, the control unit controls supply of response currents to the coil based on the signal such that the coil radiates a counteracting electromagnetic field that at least partially prevents passage of the intrusive field into the internal volume of the structure.

A keyboard for secure data entry is provided. The keyboard comprises at least one or more of data entry buttons that can be depressed by a user. For each of the data entry buttons, a button actuator is provided that is movable upon the user depressing the respective data entry button and a primary capacitive sensor is provided that is arranged to determine movement of the button actuator of the respective data entry button by capacitance sampling. The button actuator is at least partly made from a conductive material. The button actuator is coupled to a defined electric potential at least during the capacitance sampling to shield the primary capacitive sensor from eavesdropping.

Systems and methods of shielding a hand sensor system in a steering wheel are disclosed herein. An exemplary hand sensor system includes a sensor mat and a heater mat that is disposed between the sensor mat and a frame of the steering wheel. A power source selectively provides a heating current to the heater mat to provide heat to the steering wheel and a shielding voltage signal to the heater mat to provide electrical shielding for the sensor mat when heating is not needed or when sensing takes priority over heating. Alternatively, the system may include a shield mat that is separate from the heater mat and is disposed between the sensor mat and the heater mat. In addition, to isolate the signal carried by individual sensor return wires, a metallic or insulating covering or conduit may be provided around the wires or portions thereof.

A system for reducing a specific absorption rate includes a source field generation unit wound with a first cylindrical coil and accommodating a source material therein, and generating a source field by applying a periodic input signal to the first cylindrical coil; a physical property change unit wound with a second cylindrical coil disposed adjacent to the first cylindrical coil and accommodating a transfer target therein, and changing a physical property of the transfer target based on the generated source field; and a target field circuit unit controlling the transfer target to form a target field by a PCB substrate with a power supply interface connected to a power supply and an input of the power supply.

An electromagnetic wave absorbing sheet includes a sheet-shaped fibrous substrate and a plurality of carbon nanotubes attached to the sheet-shaped fibrous substrate. The attached amount of the carbon nanotubes in the electromagnetic wave absorbing sheet is 5 mass % or more. The electromagnetic wave absorbing sheet has a surface resistance of 20 Ω/sq. or more.

Various circuit board systems and methods of use and manufacture thereof are disclosed. A circuit board system can have a first circuit board including a substrate and a first component susceptible to electromagnetic interference carried by the substrate. The system can also include a second circuit board including a second substrate, and a shield engaged to the substrate of the first component, the shield at least partially covering the first component and being configured to protect the first component from electromagnetic interference, wherein the shield couples the substrate of the first circuit board to the substrate of the second circuit board.