38results about How to "Improve shielding function" patented technology

An optical transceiver that reduces the EMI noise leaked therefrom is reduced is disclosed. The optical transceiver of the invention provides a metal housing, an optical subassembly, and an electronic circuit. The metal housing includes a first space that installs the electronic circuit and a second space that installs the optical subassembly. The first space and the second space are electrically shielded to each other, in addition that both spaces are shielded from the external. In the optical transceiver of the invention, even the second space provides the optical path to the optical connector, which becomes a definite leak path for the EMI noise, the leakage from the first space to the external through the optical path is prevented.

A connector to be mounted to a board includes a contact having an angled portion, a housing having a fitting portion and fixedly holding the contact, and a conductive shell. The shell includes a front shell covering the fitting portion and a back shell covering the angled portion. The front shell has a terminal to be connected to the board and a fixing portion provided with an insertion hole allowing a screw to be inserted therethrough. The back shell has a terminal to be connected to the board and a fixed portion faced to the fixing portion. The fixed portion has a tap portion. The front and the back shells are fixed to the housing by screwing the screw through the insertion hole into the tap portion.

A Touch Screen Panel (TSP) Liquid Crystal Display (LCD) device for reducing LCD noise measured in a TSP is provided. The TSP LCD device includes a ground line along an edge of an Indium Tin Oxide (ITO) layer formed in a shield layer for grounding the ITO layer. With this arrangement, a resistance value difference according to a position of the ITO layer can be minimized. Accordingly, an LCD noise shield function can be improved.

An electronic device including an electromagnetic shielding structure is provided. The electronic device includes a printed circuit board, an antenna module, and an electromagnetic wave shielding structure. The antenna module includes a radio frequency integrated circuit mounted on the printed circuit board, and an array antenna coupled to an upper portion of the radio frequency integrated circuit. The electromagnetic wave shielding structure surrounds a side portion of the antenna module.

The invention provides a lightweight shielding square cabinet wall plate with a radar stealth function, and a preparation method thereof. The square cabinet wall plate comprises a wave absorbing honeycomb sandwich layer, a first surface plate layer and a second surface plate layer, wherein the first surface plate layer and the second surface plate layer are arranged on the upper side and the lowerside of the wave absorbing honeycomb sandwich layer, the wave absorbing honeycomb sandwich layer comprises a honeycomb type support skeleton and a wave absorbing layer covering the surface of the skeleton, and the first surface plate layer and the second surface plate layer respectively comprise a multi-layer metalized fiber fabric coated with a wave absorbing material on the surface. According to the present invention, by arranging the surface metalized fiber fabric and the wave absorbing material layer in the surface plate layers of the cabinet wall plate, the cabinet wall plate has the radar stealth function and the high shielding performance; by using the surface plate layer prepared with the surface metalized fiber fabric to replace the metal surface plate, such that the weight is light; and the shielding performance of the square cabinet wall plate is greater than 60 dB at 20 MHz-1.5 GHz, and the average absorption performance of the square cabinet wall plate at 8-18 GHz, 26.5-40 GHz and 90-110 GHz exceeds 10 dB.

The invention belongs to the technical field of reactors, and particularly relates to a swimming pool type regional low-temperature heat supply reactor which comprises a reactor core and a loop. The reactor core is arranged at the bottom of a reactor pool, and the depth of pool water in the reactor pool is 20-30 meters; an upper hanging basket, a middle hanging basket, a lower hanging basket and areactor core base are sequentially arranged in the reactor pool from top to bottom; drive wires of a control rod drive mechanism are arranged in the upper hanging basket, control rod guide barrels are arranged in the middle hanging basket, the reactor core is arranged in the lower hanging basket, the lower hanging basket is arranged on the upper side of the reactor core base which is fixed to thebottom surface of the reactor pool, and the reactivity of reactors is controlled by control rod clusters; the loop is communicated with the lower hanging basket, and heated pool water in the reactorcore can be delivered to the outside of the reactor pool via the loop, can be subjected to heat exchange and can flow back into the reactor pool. The swimming pool type regional low-temperature heat supply reactor has the advantages of high inherent safety level and reliability, economical efficiency and practicality.

A primary object of the present invention is to provide a surface-placed sound capturing microphone with a rotatable cable connecting member of which an output cable extracted position can be simply changed as required.

According to FIG. 8a, a surface-placed sound capturing microphone of the invention includes a connecting member 2 which connects one end of an output cable 3 for transferring an audio signal captured by a microphone capsule to a predetermined external instrument. The connecting member 2 is mounted in the microphone case 11 and is rotatable around a horizontal rotating shaft in parallel to the placed surface. The output cable of the microphone can be positioned at a horizontal extracted position where the cable is horizontally extracted in parallel to the placed surface and at a vertical extracted position where the cable is vertically extracted relating to the placed surface.

An embedded circuit board is disclosed including a first copper clad laminate formed with a plurality of cavities and including a plurality of chips having different thicknesses embedded in the cavities, a second copper clad laminate provided in the cavities to allow the first copper clad laminate to level with the chips; and a resin coated copper foil provided on upper surfaces of the first and second copper clad laminates.

In a gooseneck condenser microphone that supports a condenser microphone unit via a support pipe, when the microphone is used by inserting a microphone cable through the support pipe in the state in which a shield covered wire having no skin is exposed throughout the entire length thereof, the movement of the microphone cable in the support pipe is restricted, by which the generation of noise caused by looseness contact of the shield covered wire with the inner wall of the support pipe is prevented. The microphone cable 40 is inserted through the support pipe in the state in which the shield covered wire 43 having no skin is exposed throughout the entire length thereof, and is provided with a conductive contact, in which the central part 51 thereof is held in a state of conducting with the shield covered wire 43, and wing pieces 52 on both sides are extended in the direction substantially perpendicular to the axis line of the microphone cable 40 so as to be in contact elastically with the inner surface of the support pipe, in the predetermined portion of the shield covered wire 43.

The invention provides a lightweight shield shelter wallboard with an infrared stealth function and a preparation method thereof. The shelter wallboard comprises a honeycomb core material layer, a first front panel layer and a second front panel layer, wherein the first front panel layer and the second front panel layer are arranged on the upper side and the lower side of the of honeycomb core material layer; the surface of the honeycomb core material layer, the surface of the first front panel layer and the surface of the second front panel layer are coated with temperature control coatings correspondingly; and the first front panel layer and the second front panel layer each comprise a plurality of layers of surface metallized fiber fabrics. By arranging the temperature control coatingsand the surface metallized fiber fabrics in the shelter wallboard, the shelter wallboard has the infrared stealth function and high shield performance. Compared with the prior art, metal front panelsare replaced with the front panel layers prepared from the surface metallized fiber fabrics, and thus, the weight of the shelter wallboard is low. The experiment result shows that the electromagneticshielding effectiveness of the shield shelter wallboard is greater than 50 dB in 150 kHz to 1.5 GHz electromagnetic fields; and the surface infrared radiation energy of the shield shelter wallboard islower than or equal to 100 W/m<2> at the surface temperature of 20-70 DEG C.

The invention provides a concentric flame-retardant cable, which consists of an insulated core, a flame-retardant filling strip, a wrapping layer and a cable sheath, wherein metallic hydrate flame-retardant filler containing crystal water is filled in the flame-retardant filling strip, and a grounding layer is arranged outside the wrapping layer. Compared with the prior art, the concentric flame-retardant cable has more stable structure and stronger flame-retardant performance.

The invention aims to provide a biological agent for reducing piglet diarrhea, and belongs to the technical field of livestock biological agents. The biological agent provided by the invention is compound polysaccharide consisting of saxifraga stolonifera polysaccharide, corydalis tuber polysaccharide and duckweed polysaccharide. The composite preparation provided by the invention has a relativelygood inhibition effect on escherichia coli, staphylococcus aureus and salmonella; secondly, the biological agent provided by the invention can effectively promote proliferation of porcine small intestine epithelial cells and expression of porcine small intestine epithelial cell connexin; in addition, the biological agent provided by the invention can effectively reduce diarrhea of weaned piglets.

The invention belongs to the technical field of bus ducts, and particularly relates to a shielded bus duct based on intelligent control, which comprises a bottom plate, two side plates are symmetrically and fixedly connected to the upper end surface of the bottom plate, a group of cooling fins are fixedly connected to the outer walls of the two side plates, an air bellow is fixedly connected to the upper end surface of the bottom plate, and a fan is arranged in the air bellow. A buzzer is fixedly connected to the upper end face of the bottom plate, a temperature sensor is fixedly arranged on one side of the buzzer, a smoke sensor is fixedly arranged on one side of the temperature sensor, a controller is fixedly arranged on one side of the temperature sensor, and a containing plate is fixedly connected between the two side plates. Through the fan, the temperature sensor, the smoke sensor, the buzzer, the controller and the shielding layer, the bus duct can be intelligently controlled, the bus duct can be intelligently cooled, the shielding performance of the bus duct is remarkably improved, and the phenomenon of short circuit of the bus duct is effectively avoided.

Embodiments of the invention provide a magnetic disk device which improves the shielding function for the magnetic heads yet maintaining a form factor relying upon an inexpensive constitution. In one embodiment, a magnetic disk device comprises a rotary disk-type magnetic disk; a magnetic head for recording or reproducing information; a magnetic head support mechanism for supporting the magnetic head; a shroud having an opening in which the magnetic head support mechanism is inserted, and surrounding the outer circumference of the magnetic disk; and a housing. The housing includes a base and a cover, and accommodates the magnetic disk, the magnetic head, the magnetic head support mechanism and the shroud. The base is constituted by using a nonmagnetic material and the shroud is constituted by using a magnetic material.

An electrical connector is attached to a wiring substrate and mated with a counterpart connector connected to a signal transmission medium. A shell of the electrical connector has a pair of wall parts that contact a ground member on the counterpart connector. One wall part distant from the signal transmission medium includes a first side plate that has one end attached to a ground conductive path of the wiring substrate and extends in a direction away from the wiring substrate, a joining part that has one end joined to another end of the first side plate, and a second side plate that has one end joined to another end of the joining part and extends in a direction closer to the wiring substrate. The second side plate has a contact piece that extends in a direction away from the wiring substrate and elastically contacts the ground member.