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 discloses a mobile terminal with MIMO (Multi-input Multi-output) antennae. The mobile terminal comprises a medium base plate, a first circuit part and a second circuit part, wherein the first circuit part and the second circuit par are respectively arranged on the front face and the back face of the media base plate. The mobile terminal further comprises five antennae arranged on the front face of the media base plate, wherein the five antennae are distributed at the periphery of the first circuit part, and the five antennae are respectively connected with the first circuit part or the second circuit part by transmission lines; the directions of polarization of each two adjacent antennae are respectively orthogonal to each other; a first shielding cover is arranged on the first circuit part, a second shielding cover is arranged on the second circuit part, and the first shielding cover and the second shielding cover are grounded; and an air gap is reserved between each two adjacent antennae on the medium base plate respectively. By carrying out the technical scheme in the invention, under the condition that the volume of the mobile terminal is limited, the isolation between antennae is improved, thus the correlativity coefficient and the coupling coefficient of the MIMO antennae are greatly reduced, and the radiation characteristic of an MIMO antenna array is enhanced.

The invention discloses a non-contact type dynamic power supply system coil for trains in the rail transit. The coil comprises energy emission coils laid along tracks and energy picking coils installed at the bottoms of the trains. Each energy emission coil comprises multiple segments of uni-polarity coils and dual-polarity coils, which are equal in length and width and successively alternatively laid. A compensation filtering loop where the corresponding energy emission coil is arranged is parallelly connected to a high-frequency alternating-current power supply H. The energy picking coils comprise a uni-polarity coil and a dual-polarity coil, which are equal with the energy emission coils in length and width. The uni-polarity coils are serially connected with a capacitor and then parallelly connected to the input end of a rectifier K1. The dual-polarity coils are serially connected with a capacitor and then parallelly connected to the input end of a rectifier K2. The output end of the rectifier K1 and the output end of the rectifier K2 are serially connected and then connected to a motor G. According to the invention, decoupling of the energy emission coils is achieved; and the energy picking coils pick stable induced electromotive force during a moving process.

The invention discloses an eight-element ultra wide band MIMO antenna. The eight-element ultra wide band MIMO antenna comprises a medium substrate, a grounding plate arranged at the lower layer of the medium substrate, and four same radiating areas arranged in four round angle positions of the upper layer of the medium substrate respectively and symmetrically. Each radiating area comprises a first ground support structure with a pendulum bob shape located at round angle of the medium substrate and the pendulum bob end coincides with the contour of the medium substrate, Each radiating area also comprises a first antenna unit and a second antenna unit which are distributed symmetrically along the center axis of the first ground support structure, the first antenna unit and the second antenna unit are in quadrature feed connection. A first L-shaped recessed groove is arranged at the line side, close to the first ground support structure, of the first antenna unit. One end of a first feed line is connected with the first antenna unit, and the other end of the first feed line is equipped with a first feed port. A second L-shaped recessed groove is arranged at the line side, close to the first ground support structure, of the second antenna unit. One end of a second feed line is connected with the first antenna unit, and the other end of the second feed line is equipped with a second feed port. The eight-element ultra wide band MIMO antenna has advantages of high isolation, low cross coupling, small size and low cost.

The invention discloses a wireless charging device which comprises a first resonance coil, a second resonance coil, a first electromagnetic shielding cover, a second electromagnetic shielding cover and a load coil. The first resonance coil has first characteristic index and is located at the transmitting end. The second resonance coil has first characteristic index and located at the receiving end, and a preset distance is arranged between the first resonance coil and the second resonance coil. The first electromagnetic shielding cover covers the periphery of the first resonance coil and has first specific inherent attribute. The second electromagnetic shielding cover covers the periphery of the second resonance coil and the load coil and has first specific inherent attribute. The load coil is located on the same plane with the second resonance coil and on the periphery of the second resonance coil. The load coil is connected with an external device to couple electric energy carried by the second resonance coil. The first characterized index and the first specific inherent attribute are calculated according to preset distance and preset frequency. The preset frequency is resonance frequency of the first resonance coil and the second resonance coil. The wireless charging device can achieve high-efficiency low-radiation low-section wireless charging of automobiles in a certain distance range.

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 an ultra-wideband circularly polarized metasurface antenna based on a novel hybrid feed network, which comprises three metal layers and two dielectric layers, namely a top metal layer, an upper dielectric layer, a middle metal layer, a lower dielectric layer and a bottom metal layer in sequence from top to bottom. The top metal layer is a metasurface array, and the middle metal layer is a metal layer provided with orthogonal rectangular gaps; the bottom metal layer is a designed novel hybrid feed network and comprises three equally-divided two-port power dividers and two groups of ultra wide band phase shifters formed by coupling lines in different phase shift periods, and the two groups of phase shifters are in 180-degree rotational symmetry by taking the central axis of the structure as the center; four ports of the hybrid feed network are four ultra-wideband microstrip ports with phase shifts of 0 degree, 90 degrees, 180 degrees and 270 degrees, which is the key for realizing ultra-wideband circular polarization. The metasurface antenna can obtain ultra-wideband circular polarization performance, and the requirement of wireless communication for higher circular polarization bandwidth due to frequency band increase is met.

The invention discloses an external cavity narrow linewidth laser device. The laser device comprises a semiconductor light amplifier, a planar waveguide grating and a substrate. The semiconductor light amplifier and the planar waveguide grating are arranged on the substrate in a bonding way. A high-reflection film is plated on one end of the semiconductor light amplifier, and a high-transmittance film is plated on the other end. The high-transmittance film is plated on the two sides of the planar waveguide grating respectively. The end surface of one end of the semiconductor light amplifier with plating of the high-transmittance film is coupled with the end surface of one side of the planar waveguide grating. The external cavity narrow linewidth laser device has the characteristics of narrow linewidth, high power, low noise and high frequency stability and can be applied to a high-order modulation format and a coherent detection system so as to provide a transmitting source and an intrinsic source laser device for the next generation of optical fiber communication system.

A nonvolatile memory array has a single transistor flash memory cell and a two transistor EEPROM memory cell which maybe integrated on the same substrate. The nonvolatile memory cell has a floating gate with a low coupling coefficient to permit a smaller memory cell. The floating gate placed over a tunneling insulation layer, the floating gate is aligned with edges of the source region and the drain region and having a width defined by a width of the edges of the source the drain. The floating gate and control gate have a relatively small coupling ratio of less than 50% to allow scaling of the nonvolatile memory cells. The nonvolatile memory cells are programmed with channel hot electron programming and erased with Fowler Nordheim tunneling at relatively high voltages.

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 coaxial cavity tunable filter with balanced bandwidth at a high end and a low end. The prior coaxial cavity tunable filter can not keep the constant bandwidth in the workingfrequency band at different frequencies. The coaxial cavity tunable filter with balanced bandwidth at the high end and the low end comprises a filter shell, wherein the filter shell is divided into aplurality of coaxial cavities by baffle plates which are provided with rectangular coupling windows; the center of the bottom in each coaxial cavity is provided with a cylindrical inner conductor; aninput coaxial joint and an output coaxial joint are respectively arranged on the two opposite side walls of the filter shell; one end of a coupling loop is connected with the coaxial joints, and theother end of the coupling loop is connected with the bottom in each cavity of the filter shell; the coupling loop among the cavities is in a solenoid type structure; and two ends of a spiral wire arerespectively positioned in two adjacent coaxial cavities, and a leading wire is led out and is connected with the bottom of the filter shell. In the invention, the filter coupling windows and the solenoid type coupling loop among the cavities are combined, and by using the structure, the bandwidth of the filter can be kept constant in the whole frequency tuning range, and the insertion loss and the ripples of the filter are greatly improved.

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 relates to a DD-PS strong anti-offset loose coupling transformer and a parameter determination method thereof, belongs to the technical field of wireless power transmission, and solves the problem of low system efficiency caused by a weak anti-offset capability of the existing compensation topology. According to the invention, a planar solenoid coil and a DD coil are combined, and different connection modes are adopted at the primary side and the secondary side so that anti-offset performance of the DD-PS loose coupling transformer in a magnetic field direction is remarkably improved, and meanwhile the excellent anti-offset performance of the planar solenoid loose coupling transformer and the DD-shaped loose coupling transformer in the vertical magnetic field direction is reserved. According to the parameter determination method of the loose coupling transformer, the parameters of the loose coupling transformer can be rapidly determined, and an optimal solution meeting application requirements is obtained. The invention is suitable for the technical field of wireless power transmission.

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 invention provides a standing wave electron linear accelerator comprising accelerating chamber, coupling resonator, electron gun, microwave coupler, nose cone, titanium getter pump, thermostatic water jacket and tungsten target, wherein the nose cone is canceled from the accelerating chamber to be arranged in the couple resonator, two nose cones are arranged for each couple resonator on the front and rear end surfaces of the couple resonator. The accelerator by the present invention lowers the radial electric field intensity in the accelerating chamber, and maximize the output dosage.

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 grating distributed feedback quantum cascade laser which comprises a substrate, a lower waveguide layer, a lower optical confinement layer, an active area, an upper optical confinement layer, an equivalent phase-shifting grating and an upper waveguide layer, wherein the lower waveguide layer, the lower optical confinement layer, the active area, the upper optical confinement layer, the equivalent phase-shifting grating and the upper waveguide layer sequentially grow on the substrate. The equivalent phase-shifting grating is arranged on the upper surface of the upper optical confinement layer and comprises a uniform grating, a sampling grating and a pi phase-shifting structure. Compared with a traditional process for manufacturing the uniform grating, the process for manufacturing the equivalent phase-shifting grating is much simpler, and preparation difficulty of the grating distributed feedback quantum cascade laser is greatly reduced.

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.

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 mobile terminal with MIMO (Multi-input Multi-output) antennae. The mobile terminal comprises a medium base plate, a first circuit part and a second circuit part, wherein the first circuit part and the second circuit par are respectively arranged on the front face and the back face of the media base plate. The mobile terminal further comprises five antennae arranged on the front face of the media base plate, wherein the five antennae are distributed at the periphery of the first circuit part, and the five antennae are respectively connected with the first circuit part or the second circuit part by transmission lines; the directions of polarization of each two adjacent antennae are respectively orthogonal to each other; a first shielding cover is arranged on the first circuit part, a second shielding cover is arranged on the second circuit part, and the first shielding cover and the second shielding cover are grounded; and an air gap is reserved between each two adjacent antennae on the medium base plate respectively. By carrying out the technical scheme in the invention, under the condition that the volume of the mobile terminal is limited, the isolation between antennae is improved, thus the correlativity coefficient and the coupling coefficient of the MIMO antennae are greatly reduced, and the radiation characteristic of an MIMO antenna array is enhanced.