3results about How to "Guaranteed electromagnetic shielding performance" patented technology

A highly integrated wide- and narrow-band RF transceiver module includes a housing made of aluminum alloy with a flat structure. An upper cavity is formed with an opening on the housing's surface, and a lower cavity is formed with an opening on the lower surface of the housing. An upper control card and an upper partition are located at the bottom of the upper cavity, with the upper partition fixed to the bottom of the upper cavity by screws. Multiple compartments are formed on the upper partition. An upper cover is fixed to the upper end of the upper cavity. A lower control card and a lower partition are located at the bottom of the lower cavity, with the lower partition located below the lower control card and fixed to the bottom of the lower cavity. Multiple holes are formed on the lower partition, with electronic components on the lower control card located within each hole. A lower cover is fixed to the lower end of the lower cavity. This invention's dual-cavity design evenly distributes the gain in the RF link across both sides, achieving physical isolation and increasing electromagnetic shielding. Simultaneously, power amplifiers and RF front-end circuits arranged on the same side are physically isolated through the upper and lower partitions, ensuring electromagnetic shielding effectiveness.

The utility model discloses a heat conduction structure of an optical module. The heat conduction structure comprises a base, VC radiating fins and a radiator, the base is provided with a front surface, a back surface and a hollow opening penetrating through the front surface and the back surface; the VC cooling fin is arranged on one side of the back face of the base and provided with a first heat conduction face facing the base. A circle of continuous welding seam or a circle of shielding glue is arranged between the VC cooling fin and the base in the circumferential direction of the VC cooling fin. The radiator is arranged on one side of the front face of the base and provided with a second heat conduction face facing the base. The first heat-conducting surface and the second heat-conducting surface are in contact through the hollow-out opening, and a welding surface is formed between the two. The overall structure of the high-speed optical module is high in heat conduction capability, can guarantee electromagnetic shielding capability, and effectively meets the heat dissipation requirement and the electromagnetic shielding requirement of the high-speed optical module.

This utility model provides an on-board charger, relating to the field of new energy vehicle technology. The shielding cover provided by this utility model includes: a shielding plate, and a convex bridge and a support foot disposed on the shielding plate; the convex bridge protrudes relative to the surface of the shielding plate; the support foot bends relative to the shielding plate in a direction away from the protrusion of the convex bridge, and the support foot is used to connect the shielded device. The convex bridge can abut against and press against the electrical cover plate, which not only prevents the shielding cover from loosening and improves stability, but also ensures tight contact and grounding between the shielding cover and the electrical cover plate, possessing technical advantages such as stable shielding effect, ease of manufacture, and low production cost.