57results about How to "Reduce the coupling coefficient" patented technology

A mobile payment through-connection-bridge communication distance balanced through-connection-bridge antenna comprises a 13.56MHz through-connection-bridge antenna, an outer ring helical antenna and an 8-shaped antenna formed by connecting two reversed rounding spiral coils in series. The 8-shaped antenna is inlaid in a ring of the outer ring helical antenna and is next to the ring of the outer ring helical antenna, the 13.56MHz through-connection-bridge antenna is located in a ring of a 13.56MHz reader antenna, and the outer ring helical antenna and the 8-shaped antenna are connected with respective through-connection-bridge chips. The antenna uses the through-connection-bridge chip with low receiving gain to connect the helical antenna which is arranged on the periphery and has a small number of rings to mainly receive mobile phone signals with weak shield, uses the 8-shaped antenna which is formed by series-opposing connection coils, arranged in the inner ring, and has a large number of rings to receive mobile phone subscriber identity module (SIM) sending signals with strong shield, uses the same 13.56MHz antenna for load debugging, can receive various signals sent by the mobile phones, enables the signals to be sent to the reader in the load debugging mode, and completes a signal transmission function from the mobile phones to the reader.

The invention discloses a cam jet dispensing device mainly composed of a servo nozzle 1, a firing pin 5, a servo motor 14, a cam 15, a movement arm 20, a micrometer head 24, a pressing plate 23, and a spring 22. The firing pin 5 is arranged on the movement arm 20, such that a movement part is formed. The firing pin 5, the movement arm 20, and the cam 15 form a cam mechanism. The servo motor 14 drives the cam mechanism to rotate. The cam mechanism drives the firing pin 5 to move up and down, such that the closing and opening of the firing pin 5 and the nozzle 1 are realized. High-pressure glue at the nozzle 1 is jet through the nozzle 1. The device has the main characteristics that: (1) power of the device used for driving the firing pin is provided by the cam rotated by the servo motor; the rotation speed of the servo motor is stable; firing pin moves fast up and down; and jet frequency is high; and (2) firing pin movement speed of the device is determined by motor rotation speed; the amount of coupling coefficients is low, and controlling is convenient.

A transformer structure is proposed herein which includes a primary winding coil, a secondary winding coil, a bobbin module, and a magnetic core assembly. The magnetic core assembly is mounted within the bobbin module. The bobbin module includes a first winding window portion and a second winding window portion in which the first winding window portion allows the primary winding coil to be wound thereupon and the second winding window portion allows the secondary winding coil to be wound thereupon. Both of first winding window portion and the second winding window portion include a first lateral plate, and each couples or separate with each other by the first lateral plate, such that the primary winding coil and the secondary winding coil are separated with each other and the leakage inductance, and the safe distance of electrical security for the transformer is increased accordingly.

The invention provides a manufacturing method of a multimode optical fiber coupler based on a single mode light source. The manufacturing method based on the single mode light source comprises the steps of providing two multimode optical fibers and the light source making a monomode optical fiber as an output optical fiber; welding the monomode optical fiber to one multimode optical fiber; stripping an optical fiber coating layer with a certain length from each multimode optical fiber, and wiping each inner wrapping layer clearly; placing the multimode optical fibers on an absorption platform of tapering equipment, enabling the output ends of the multimode optical fibers to be connected to the splitting ratio on-line monitoring end of the tapering equipment, and using a clamp for enabling the two multimode optical fibers to get close; setting tapering process parameters; starting the tapering equipment so as to conduct tapering on the two multimode optical fibers; conducting packaging of quartz grooves, quartz tubes and stainless steel tubes on an obtained semi-finished product of the multimode optical fiber coupler, and obtaining the multimode optical fiber coupler based on the single mode light source. Through the method, stable coupling, at any splitting ratio, of the multimode optical fiber coupler is achieved, stability of product performance is guaranteed, and the using range of the multimode optical fiber coupler is expanded.

The invention provides an improved non-contact transformer with a secondary side current phase detection function. The non-contact transformer comprises a primary side and a secondary side; the primary side comprises a primary side magnetic core and a primary side winding; the secondary side comprises a secondary side magnetic core and a secondary side winding; the primary side also comprises a testing winding and a current voltage conversion circuit; the testing winding and the primary side winding share the primary side magnetic core; the testing winding is shortly connected; an output of the testing winding is switched into the current voltage conversion circuit. According to the invention, by reasonably designing the primary side winding and the testing winding, magnetic fluxes generated by currents of all parts of the primary side winding in all parts of the testing winding are partially or completely balanced out. By enabling the testing winding of the primary side of the non-contact transformer to be shorted out, a short-circuit current of the testing winding and a secondary side current always meet the linear relation under the conditions of loose coupling and a variable gap and in-phase voltage signals are obtained by the current voltage conversion circuit.

The invention discloses an electrically erasable programmable read-only memory as well as a forming method and an erasure method thereof. The electrically erasable programmable read-only memory comprises a semiconductor substrate, word lines, floating gate medium layers, floating gates, control gate medium layers, control gates, isolation oxidation layers and bit line doping regions, wherein a plurality of active regions are distributed along the first direction in the semiconductor substrate; the work lines are located in the active regions; the floating gate medium layers are respectively located on the active regions at two sides of the word lines; the floating gates are located on the floating gate medium layers; the control gate medium layers are located on the floating gates; the control gates are located on the control gate medium layers; the width of the floating gates is larger than the width of the active regions; the isolation oxidation layers are located among the word lines, the floating gates and the control gates; the bit line doping regions are respectively located in the active regions at one side, far away from the word lines, of the floating gates and the control gates. According to the electrically erasable programmable read-only memory, a bit line end erasure mode is adopted, the coupling coefficients of the floating gates to the control gates and the bit line doping regions are structurally improved, and the erasure performance is improved while the step-by-step erasure function is realized.

The invention discloses a leaky-wave dual-antenna system comprising a transmitting antenna array and a receiving antenna array. The transmitting antenna array comprises plural first microstrips and plural corresponding first differential circuits, and each of the first differential circuit matches the corresponding first microstrip by a L-type matching network; the receiving antenna array comprises plural second microstrips and plural corresponding second differential circuits, and each of the second differential circuit matches the corresponding second microstrip by a L-type matching network. A first end and a second end of each of the first differential circuits are respectively connected to the corresponding first microstrip; a third end and a fourth end of each of the second differential circuits are respectively connected to the corresponding second microstrip.

The invention provides a split gate flash memory and a forming method thereof. The forming method of the split gate flash memory includes that: a first media layer and a floating gate layer are sequentially formed on a substrate; a discrete second media layer is formed on the floating gate layer, and an area where the second media layer is located is a word line area; first side walls are formed around the second media layer, and areas between adjacent first side walls are source electrode line areas; the floating gate layer and the first media layer are etched to the substrate by using the first side walls as masks; source electrode lines are formed on the source electrode line areas; a floating gate and a floating gate media layer are formed by removing the second media layer, and the floating gate layer and the first media layer under the second media layer; a third media layer is formed on a floating gate side wall below the top tip of the floating gate which is adjacent to the word line area; a tunneling media layer is formed to cover the substrate, the third media layer, the floating gate, the first side walls and the surfaces of the source electrode lines; and word lines are formed on the tunneling media layer of the word line area. By using the forming method, erasure performance is improved, voltage applied on the word lines is reduced, and power consumption is saved.

The invention relates to a composite magnetic coupling resonance type wireless power transmission coil. The cross section of a transmission line adopted for winding a transmission coil is a layered structure which is formed by compounding a solid copper conductor, a first insulating layer, a copper conducting layer, a high-conductivity material conducting layer and a second insulating layer; the solid copper conductor forms an excitation coil or a load coil of the composite magnetic coupling resonance type wireless power transmission coil, and the copper conducting layer and the high-conductivity material conducting layer commonly form a transmitting coil or a receiving coil of the composite magnetic coupling resonance type wireless power transmission coil, so that the excitation coil andthe transmitting coil or the load coil and the receiving coil are compounded into a whole. The internal resistance, caused due to the skin effect, of the transmitting coil and the receiving coil in ahigh-frequency condition can be reduced in a four-coil magnetic coupling resonance type wireless power transmission system, the quality factor of the coils can be improved and high-efficiency transmission of power is achieved so as to provided convenience for miniature and miniaturized devices using the four-coil magnetic coupling resonant wireless power transmission technology.

The invention provides a serial wireless energy transmission device. The serial wireless energy transmission device comprises a sending module, relay modules and a receiving module, the sending module, the relay modules and the receiving module are arranged in sequence and each comprise a coil, and the sending module, the relay modules and the receiving module achieve wireless transmission of energy through the coils; the magnetic coupling among the sending module, the relay modules and the receiving module is achieved through the coils, the insulation level is improved, the situation of partial discharge is reduced, loads connected with the serial wireless energy transmission device are independent of one another, and power supply faults are not prone to being caused. Energy transmissionis achieved through a non-contact mode of magnetic coupling between the coils, the transmission efficiency is high, and the compactness of the size and the good electromagnetic compatibility are guaranteed. In the energy transmission process among the relay modules, the power factor of the whole device is improved through compensation capacitors, all levels of loads are independent of one anotherand do not influence one another, and it is guaranteed that all levels of loads are flexible in power condition and do not influence the overall performance of the energy transmission device.

A light-emitting element includes a light-emitting region which is made from a stacked structure configured from a first compound semiconductor layer, an active layer, and a second compound semiconductor layer, and a light propagation region which is made from the stacked structure, extends from the light-emitting region, and has a light-emitting end surface. The light-emitting region is configured from a ridge stripe structure and ridge stripe adjacent portions positioned at both sides of the ridge stripe structure, and when a thickness of the second compound semiconductor layer in the ridge stripe adjacent portions is set to d1, a thickness of the second compound semiconductor layer in the light propagation region is set to d2, and a thickness of the second compound semiconductor layer in the ridge stripe structure is set to d3, d3>d2>d1 is satisfied.

A small balancer coil for cold-cathode florescent lamps having sufficient shunt/balance effects, comprises a discharge lamp, a conductor located close to the discharge lamp, and two coils whose magnetic fluxes face each other. The magnetic fluxes generated in the coils face and cancel each other. Lamp currents of the discharge lamps are balanced by making the sum of the reactances of the mutual inductance of the balancer coil larger than the negative resistance of the discharge lamp. Section winding is applied to each coil of the balancer coil so as to maintain shunt and balance effects even in a small/flat balancer coil by making self-resonance frequency of each of the coils higher.

The present invention relates to a driver device (40; 60) for driving a capacitive load (12), in particular an ultrasound transducer (12) having one or more transducer elements, comprising an output terminal (42; 68) for providing an alternating drive voltage (V14; V22) to the load (12), a plurality of voltage supply elements (46, 48, 50, 52; 72, 74) for providing intermediate voltage levels (V16), a plurality of controllable connecting means (S0-S7) each associated to one of the voltage supply elements (46, 48, 50, 52; 72, 74) for connecting the voltage supply elements (46, 48, 50, 52; 72, 74) to the output terminal (42; 68) and for supplying one of the intermediate voltage levels (V16) or a sum of a plurality of the intermediate voltage levels (V16) as the alternating drive voltage (V14; V22) to the output terminal.

The invention discloses a 3S loosely coupled transformer for wireless power transmission and a parameter determination method, belongs to the technical field of wireless power transmission, and particularly relates to a loosely coupled transformer. The primary side coupling mechanism and the secondary side coupling mechanism are oppositely arranged; the primary side coupling mechanism is positioned on the lower side of the secondary side coupling mechanism; the primary side coupling mechanism comprises a primary side ferrite magnetic core, a coil A and two coils B. The coil A is attached to the upper surface of the ferrite magnetic core; the two coils B are respectively and independently wound into a rectangular ring, the two coils B are attached to two opposite corners of the coil A, and the coil C of the secondary side coupling mechanism is attached to the lower surface of the ferrite magnetic core; and the two coils D are respectively and independently wound into rectangular rings, the two coils D are attached to two opposite corners of the coil C, and the two coils B and the two coils D are arranged in a staggered mode. The transformer is suitable for voltage transformation and regulation.

The invention discloses a dual-frequency communication vertically folded mobile phone cable patch antenna for mobile payment service mobile phones. The antenna cable patch comprises a 13.56 MHz antenna and a 6.78MHz antenna, wherein the antennae both are spirally coiled rectangular coils, the 13.56 MHz antenna is metallically isolated from a back cover of the mobile phone via a magnetic film, the 6.78MHz antenna is vertical to the 13.56 MHz antenna and covers the mobile phone side near an SIM (Subscriber Identity Module) insertion part, and the 13.56 MHz antenna and the 6.78MHz antenna are packaged in a back-off manner through a back-off pad and a chip. The dual-frequency communication vertically folded mobile phone cable patch antenna has the following advantages that the mutual influence between the 13.56 MHz antenna and the 6.78MHz antenna is low, a receiving antenna of the 6.78MHz antenna is less blocked by adjacent-channel signals, the coupling factor of a communication antenna between the 6.78MHz antenna and the SIM is high, and the cable patch is guaranteed to receive the signals transmitted by the SIM; and the 6.78MHz antenna also can be a signal amplifier between the SIM antenna and a reader antenna, thereby increasing the signal transmission between the SIM antenna and the reader antenna.

The invention provides a knowledge graph completion method and system based on multi-scale dispersion dynamic routing, and the method comprises the steps: enabling an obtained to-be-completed triple to circularly interact with a memory matrix through employing a multi-head attention mechanism, coding a potential dependence relation between an entity and a relation, and generating a triple coding vector; the triple coding vectors are input into the trained capsule network, global features are extracted, different coupling coefficients are distributed to the global features, missing triads are predicted according to the global features, and completion of the knowledge graph is completed; according to the method, the potential dependency relationship between the entities is effectively modeled during knowledge graph prediction, the deviation caused by dynamic routing during prediction is reduced as much as possible, and the characteristics of different abstract levels are captured, so that the completion prediction precision of the knowledge graph and the effect of triple classification are improved.

The invention provides a relay type wireless energy transmitting device. The relay type wireless energy transmitting device comprises a transmitting module, a relay module and a receiving module, thetransmitting module, the relay module and the receiving module are sequentially arranged and each comprise a coil and a compensation loop. The transmitting module, the relay module and the receiving module achieve wireless transmission of energy through coils, the insulation level is improved, the situation of partial discharge is reduced, loads connected with the wireless energy transmitting device are independent of one another, and power supply faults are not likely to be caused. The energy transmission among the transmitting module, the relay module and the receiving module is achieved ina non-contact mode of magnetic coupling among the coils, the transmission efficiency is high, and the compactness of the size and the good electromagnetic compatibility are guaranteed. Reliable powersupply is provided for a gate drive circuit in power electronic equipment, and meanwhile, low-cost high-voltage insulation is realized in an air insulation mode; the compensation loop is used for compensating inductive reactive power of the coil, so that the overall power factor and energy transmission efficiency of the device are ensured.