A testing apparatus for electromagnetically sensitive equipment includes a housing defining a testing chamber. The housing blocks transmission of electromagnetic waves from an external environment into the testing chamber and reduces reflection of electromagnetic waves within the testing chamber. The testing apparatus also includes a tube defining an air flow path between the testing chamber and the external environment. The tube blocks transmission of electromagnetic waves from the external environment into the air flow path. The tube includes a proximal end coupled to an opening in the housing such that the air flow path is fluidly coupled to the testing chamber via the opening, a distal end opposing the proximal end, and a bent segment extending between the proximal end and the distal end.

A modularly expandable electronic control unit comprises: an electronic circuit board on which a conductor track is disposed on a side in a region of lateral edges and enclosing an inner region and separating it from an outer region of the side, a housing having two halves for receiving the electronic circuit board. With the housing assembled, at least one housing half has an encircling electrically conductive shielding wall which rests on and establishes electrical contact with the conductor track and/or has at least one receptacle accessible from outside the assembled housing. The receptacle is disposed so the electronic module placed in the receptacle may be electrically connected to a module connection port disposed in the outer region of the electronic circuit board. The electronic circuit board has electrical connections between the module connection port and one or more electronic assemblies disposed on the inner region.

According to various embodiments of the disclosure, a microwave oven may include: a main body including a cooking chamber and a front panel; a door to the main body including a door frame corresponding to the front panel; and a shielding device connected to the door to shield electromagnetic waves leaking from the cooking chamber. The shielding device may include: a choke unit extending from the door frame and including a plurality of portions constructed by being bent at least once; and a choke covering the choke unit. The choke cover may include a first portion constructed of a first material coupled to a portion of the choke unit; and a second portion connected integrally with the first portion and constructed of a second material different from the first material.

An environmental testing device includes a heat insulation chamber that includes a test chamber and is formed using a heat insulation panel that is electrically conductible. The heat insulation chamber includes a chamber body having an entrance and a door that opens and closes the entrance. A heat insulation panel forming the chamber body includes an outer panel and an inner panel. A radiation-absorbent material is disposed between the outer panel and the inner panel. The heat insulation panel forming the chamber body and a heat insulation panel forming the door are connected to each other in an electrically conductible manner.

An electrostatic discharge protection circuit, a display substrate and a display apparatus are disclosed. The electrostatic discharge protection circuit includes: a first conductive portion, having an end portion; and at least one electrostatic discharge portion, arranged on a same layer as the first conductive portion and spaced from the end portion of the first conductive portion, the at least one electrostatic discharge portion being configured to discharge electrostatic charges generated at the end portion of the first conductive portion.

A microwave shielding plate and a cooking device are disclosed. The microwave shielding plate includes one or more conductive layers, a conductor is provided in each of the conductive layers, and two ends of the conductor are provided with wiring points, so that a shielding section covering the conductive layers is formed when the conductor is coupled into a conductive loop.

A near-field detection system includes include an electric field generator configured to apply an electric field to an analysis sample, a probe configured to detect a near field that has passed through the analysis sample, a current detector connected to the probe, and a laser system irradiating a laser to each of the electric field generator and the probe. The probe includes a cantilever substrate, an antenna electrode on the cantilever substrate, an electromagnetic wave blocking layer exposing a sensing region of the cantilever substrate, the electromagnetic wave blocking layer including a conductive material, and an insulating layer interposed between the cantilever substrate and the electromagnetic wave blocking layer such that the insulating layer is between the antenna electrode and the electromagnetic wave blocking layer.

A unitary radome layer assembly is provided and includes a first nanocomposite formulation and a second nanocomposite formulation. The first and second nanocomposite formulations are provided together in a unitary radome layer with respective distribution gradients.

An equipment enclosure (1) for electromagnetically isolating an electronic device, the equipment enclosure 1 comprising a conductive housing (3) and a plurality of conductive sheets (5). Each sheet (5) includes an aperture (7). The sheets (5) are stacked in a spaced-apart relationship within the housing (3) thereby defining a plurality of electromagnetically-isolated cavities (9) each within a respective Faraday cage formed by the conductive housing (3) and the conductive sheets (5). The apertures (7) form a channel (11) that extends through the enclosure (1) providing a route for connections between the cavities (9).

A battery connection device for connecting to a vehicle battery includes a top member, a bottom member having a side wall and a bottom wall. The side wall, top member, and bottom member form a box-like enclosure. The bottom wall includes a through-hole with a circumferential face, an adapter member arranged inside the box-like enclosure extends at least partially through the through-hole for connection with the battery. A dimension of the adapter member is smaller than a dimension of the through-hole to form a gap between an outer face of the adapter member facing the circumferential face and the circumferential face, and flexible connection member connected to the adapter member and to the bottom member and closing the gap between the outer face and the circumferential face. The flexible connection member includes an electromagnetic shield for shielding electromagnetic radiation and a seal for sealing the gap against dust and/or moisture.