51results about How to "Improve high-frequency transmission performance" patented technology

An electrical connector includes an insulating body, a shielding sheet disposed in the insulating body, and a ground terminal received in the insulating body for mating with a mating connector. The ground terminal is fixed between a plate surface of the shielding sheet and the insulating body. The ground terminal includes a front end, a middle section, and a rear end having a soldering portion. A first contacting portion is disposed at the front end, a second contacting portion is disposed at the middle section, and the first contacting portion and the second contacting portion respectively electrically contact with the shielding sheet.

The invention relates to an electric connector comprising an insulation body, two terminal module groups and a metal housing. The insulation body comprises a main body part and a plate-shaped abutted-connection part extending forward from the main body part. The abutted-connection part comprises an upper surface and a lower surface which are opposite and a front end surface and two side surfaces positioned between the upper surface and the lower surface. Each terminal module group comprises an insulation block and a row of conductive terminals fixed on the insulation block. Each conductive terminal comprises a grounding terminal and several differential signal terminals. Each conductive terminal comprises contact parts arranged on the upper surface and the lower surface. The metal housing circles around the outer sides of the terminal module groups. The electric connector is also provided with a metal shielding sheet positioned between the upper surface and the lower surface of the abutted-connection part. The shielding sheet is provided with at least one through hole and an elastic arm extending upwards or downwards in a projection mode from the inner edge of each through hole. Each insulation block is provided with at least one groove used for accommodating the elastic arm. The contacts parts of the grounding terminal are exposed outside of the groove to make contact with the elastic arm. The electric connector of the invention can reduce signal crosstalk.

A board-to-board type RF plug comprises a plug body, plug terminals arranged in the plug body, a plug fixing piece surrounding the periphery of the plug body, a coaxial line, and a plug circuit boardconnecting the plug terminal and the coaxial line. The plug body comprises a body pedestal, a body outer wall, an island part and an insertion space, the periphery of the body pedestal extends upwardly to form the body outer wall in an integral way, the middle of the pedestal extends upwardly to form the island part in the integral way, the insertion space is formed between the body outer wall andthe island part, and the periphery of the body pedestal extends outwardly to form a platform part. The plug fixing piece comprises a fixing outer wall surrounding the periphery of the body outer walland a parallel bottom wall which is formed by extending vertically from the bottom of the fixing outer wall, and the parallel bottom wall is pasted to the platform part. The invention also provides aboard-to-board type RF socket and a board-to-board type connector assembly.

A carrier module of a cable connector includes a circuit board and a grounding bar disposed on the circuit board. The circuit board includes a first insulating layer, a second insulating layer, and a grounding layer arranged between the first and second insulating layers. The circuit board has a hole formed on a surface thereof and a conductive extension disposed within the hole, and the conductive extension is connected to the grounding layer. The grounding bar includes a base portion and a conductive portion connected to the base portion. The conductive portion is inserted into the hole, and connected to the conductive extension, thereby electrically connecting the grounding bar and the grounding layer of the circuit board. Thus, the carrier module of the instant disclosure is provided with the grounding bar having well grounding performance which is firmly fixed on the circuit board.

The present invention provides an optical module structure. The optical module structure comprises a first carrying plate and a second carrying plate; the upper surface of the first carrying plate is provide with an electric chip; the second carrying plate is disposed above the first carrying plate; a side wall of the second carrying plate, which is adjacent to the electric chip, is provided with a photoelectric conversion element; and the photoelectric conversion element is connected with the electric chip through a connection structure. According to the optical module structure of the invention, the photoelectric conversion element is disposed above the electric chip, and therefore, by means of such a flip-chip bonding mode, connection between the photoelectric conversion element and the electric chip can be shortened, loss can be reduced, and a transmission rate can be increased.

A board-to-board type RF plug comprises a plug body, plug terminals arranged in the plug body, a plug fixing piece surrounding the periphery of the plug body, a coaxial line, a plug circuit board connecting the plug terminal and the coaxial line and a shielding casing. The plug circuit board comprises a first board body, plug signals lines arranged on the first board body and plug grounding wiresarranged between the adjacent plug signal lines. Each plug signal line comprises first and second segment parts connected to a central conductor of the coaxial line and a connection segment part connecting the first and second segment parts, the width of the connection segment part is reduced gradually from the first segment part towards the second segment part, and each plug terminal is connectedto the corresponding plug grounding wire and the second segment part of the corresponding plug signal line. The invention also provides a board-to-board type socket and a board-to-board type connector assembly.

The invention discloses the fields of machine design and machine manufacture, and in particular relates to a pulse hot pressing welding machine for welding a connecting terminal and a connector. The welding machine is characterized by comprising a main machine for hot pressing welding, heating and radiating fins, a pulse hot pressing head, a power supply device arranged outside the main machine and used for protecting the voltage in the main machine, a display screen arranged at one side of the main machine, a pneumatic cylinder, a gas pressure meter, a temperature control instrument, a magnifier and a hand switch. The pulse hot pressing welding machine replaces the traditional manual operation, is high in quality of machined workpieces and simple and feasible in operation of workers, greatly promotes the production efficiency, and has low fault rate and stable performance.

The invention provides an optical module including a driving chip and a photoelectric chip attached to a circuit board, the driving chip is used to drive the photoelectric chip to emit a high rate dimming signal, the upper surface of the driving chip is provided with a plurality of ground pins for connection with the ground line of the circuit board and a signal pin connected with the photoelectric chip, the plurality of ground pins are serially connected to the ground line of the circuit board located on at least one side of the driving chip, so that a portion of the circuit board between the driving chip and the photoelectric chip is not provided with a ground lead for connecting with the driving chip, the laying width of the circuit board between the driving chip and the photoelectric chip is reduced, the connection line of the signal pins between the driving chip and the photoelectric chip is shortened, and furthermore, the interference generated by multiple parallel channels in transmitting high-speed dimming signals can be weakened, and therefore, the high frequency transmission performance of the optical module can be improved.

A carrier module of a cable connector includes a circuit board and a connecting clip clamping the circuit board. The circuit board has a first surface and a second surface. The connecting clip has a clamping portion and a plurality of positioning arms. The clamping portion has a connecting sheet and two clamping sheets curvedly extended from the connecting sheet. The clamping sheets are respectively abutted against the first and second surfaces. The positioning arms are respectively connected to the clamping sheets and respectively arranged at two opposite sides of the clamping portion. The positioning arms are respectively configured to fix a plurality of cables disposed on the clamping sheets. Thus, the carrier module of the instant disclosure provides a positioning effect for the cables by the connecting clip fixed firmly on the circuit board with good common grounding performance. Besides, the instant disclosure also provides a cable connector.

The embodiment of the invention provides a gold wire bonding structure based on multi-branch matching and a multi-chip microwave circuit. The structure comprises a first microstrip line, a second microstrip line, and at least two gold bonding wires, wherein the first microstrip line comprises a first dielectric substrate and a first transmission line arranged on the upper surface of the first dielectric substrate; the first transmission line comprises a microstrip matched with the source end; the second microstrip line comprises a second dielectric substrate and a second transmission line; thesecond transmission line comprises a microwave network and a microstrip matched with the load end; one end of the microwave network is connected with the microstrip matched with the load end, and theother end is connected with the first transmission line through the gold bonding wire; the microwave network comprises a plurality of microstrips connected in series and is used for carrying out impedance matching on the gold bonding wires. According to the scheme, the problem of poor signal transmission quality in the high-frequency transmission process can be solved.

An electrical connector includes an insultive housing and defining a base seat and a mating portion extending from the base seat. A plurality of conductive terminals are retained in the mating portion and include a plurality of differential signal terminal pairs and grounding terminals, each conductive terminal defines a contacting portion disposed on the mating portion, a retaining portion fixed to the base seat and a connecting portion extending outside of the base seat, the contacting portion of each grounding terminal has a free end extending toward the inside of the mating portion and abutting against a first grounding bar. A second grounding bar defines a base portion and a plurality of abutting portions extending from the base portion and abutting against the retaining portions of the grounding terminals. The first grounding bar and the second grounding bar are connected by a bridging portion thereof.

The invention discloses a method for non-destructive testing of a millimeter wave BGA packaging assembly, and aims to provide a non-destructive testing method which is easy for disassembly and assembly, high in flexibility and free of secondary damage to a tested BGA packaging assembly. In a testing process, a tested BGA packaging assembly (2) is reversely placed on a first dielectric substrate (7) through a metal box body (1), and a welding ball of the BGA packaging assembly (2) makes elastic contact with a high-frequency fuzz button (5) and a low-frequency fuzz button (6). The low-frequencyfuzz button (6) is in contact with a wafer of the low-frequency adaptor cord (14) and is communicated with a low-frequency test interface formed by the finger line. A high-frequency signal is vertically transited to a high impedance matching line (11) through the high-frequency fuzz button (5) and is transmitted to a coplanar transmission line (13) through a low impedance matching line (12) to form a standard 50-ohm universal high-frequency test interface. The performance of the BGA packaging assembly (2) can be nondestructively tested through the coplanar line (13) and the low-frequency adaptor line (14).

The invention discloses a multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture. The multi-section gradually-changing coaxial type high-voltage component fast pulse response test fixture is a closed coaxial metal shielding body on the whole. The closed coaxial metal shielding body mainly comprises a coaxial fixture of which the left end part, the right end part and the middle part are of gradually-changing structures; the left end part and the right end part are of the same gradually-changing cone structure and are symmetrically arranged at two sides of the middle part; the middle part is a cylindrical coaxial fixture on the whole and comprises a left section coaxial part, a right section coaxial part and a middle section coaxial part, wherein the left section coaxial part and the right section coaxial part are of the same structure and are symmetrically arranged at two sides of the middle section coaxial part; the outer surfaces of inner conductors and the inner walls of outer conductors of the middle part of the fixture are oppositely provided with test device welding points; and inner and outer diameter axial displacement compensation is carried out on portions on the middle part of the fixture, wherein the portions are transitional portions from the equal-diameter conductors to the gradually-changing cones, and therefore, the decrease of the transmission performance of high-frequency signals which is caused by sharp change of radius can be reduced. The multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture of the invention has the advantages of high innovativeness and structural simplicity. The size of each part is relatively fixed, and the parts can be flexibly disassembled, and standardized production and batch processing can be facilitated. The multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture has a bright popularization and application prospect.

The invention discloses a composite cable for network, aiming at providing an audio/video information composite cable with diversified transmission functions, convenient wiring, easy maintenance and low cost. The invention comprises a coaxial cable (1), the coaxial cable (1) comprises a coaxial cable inner conductor (11), a coaxial cable insulating layer (12), a coaxial cable shielding layer (13) and an outer sheath I (14), the outer sheath I (14) is provided with a connecting band (2), the connecting band (2) is connected with an outer sheath II (13), the outer sheath I (14), the connecting band (2) and the outer sheath II (13) are integrated, and the outer sheath II (13) is internally provided with a network line which is selected from one or a combination of control line (31), feeder line (32), communication line (33) and weak current transmission line. The invention can be widely applied to wired transmission network communication fields.

The present invention discloses an electrical connector including an insulation body, a shielding piece, and at least a row of terminals. The insulation body includes a base and a tongue plate extending forwardly from the base, the side of the tongue plate is provided with at least one latching groove, the shielding piece is disposed on the insulation body, the shielding piece is provided with a plate body and at least one extending portion, a connecting portion connects the plate body and the extending portion, the extending portion is located at the side of the plate body and is perpendicular to the plate body, and the extending portion comprises a lock exposed to the latching groove and a lap portion; at least one row of terminals are received in the insulation body and located on one side of the shielding piece, wherein at least one grounding terminal is disposed at the outermost side, and the grounding terminal overlaps the lap portion to realize the grounding of the grounding terminal and the shielding piece, thereby reducing the electromagnetic interference and improving the high-frequency transmission performance of the electrical connector; and the lap portion is recessed,and the overall height of the lap portion and the grounding terminal can be reduced, and the thickness of the entire tongue plate is reduced.

An electric connector comprises an insulation body, a plurality of conductive terminals arranged on the insulation body and a grounding piece; the conductive terminals comprise a plurality of pairs of differential signal terminals arranged in a row and a plurality of grounding terminals, and the grounding terminals are arranged between two adjacent pairs of differential signal terminals at intervals. The grounding piece is integrally provided with a plurality of first connecting parts, second connecting parts and third connecting parts, each grounding terminal is respectively connected with the first connecting parts, the second connecting parts and the third connecting parts at different positions, and the first connecting parts, the second connecting parts and the third connecting parts are connected with the grounding terminals in a spot welding manner, so stable electric contact can be established; therefore, the signal crosstalk of the electric connector is improved, and the high-frequency transmission performance is improved.

The invention discloses an electrical connector, comprising: a body, wherein the body comprises a plastic module and two substrates, the plastic module is located between the two substrates, the substrates are provided with at least one first grounding terminal hole, a metal layer is disposed in the first grounding terminal hole, the plastic module is provided with a receiving slot corresponding to the first grounding terminal hole, at least one first grounding terminal is received in the first grounding terminal hole and the receiving slot, the body is further provided with at least one second grounding terminal hole that receives at least one second grounding terminal, and the substrates are provided with at least one grounding layer that is connected to the metal layer and exposed to the first grounding terminal hole. Adding the second grounding terminal to the body effectively enhances the shielding effect on interference signals, and the composite structure of the two substrates sandwiching the plastic module provides a good shielding effect on the conductive terminals received therein.