8results about How to "Reduce layout area" patented technology

The application discloses a low-power bandgap reference current source circuit and a control method, and the circuit comprises a current mode bandgap circuit, an error amplifier input stage circuit, a threshold modulation circuit and a current mirror circuit; the current mode bandgap circuit is internally provided with an error amplifier OPAMP and a proportional resistance network; the error amplifier input stage circuit is a PMOS pair tube input stage circuit; the threshold modulation circuit is a source-liner forward bias threshold modulation circuit, which is used for forward biasing the threshold voltage of all PMOS tubes in the low-power bandgap reference current source circuit and enabling the NMOS tube connected with the error amplifier OPAMP output stage to work in a saturation region; and the current mirror circuit is a series diode compensation method current mirror circuit structure. The application is compatible with a standard CMOS process, realizes sub-1V low voltage, micro-nano ampere level low power consumption, high-precision low-noise small area effect, solves various technical pain points of a traditional scheme, and has excellent application prospects in a wearable device power management system.

The embodiment of the application provides a multiplex card holder and a mobile terminal, the multiplex card holder is used for being installed in a card slot of the mobile terminal, and the multiplex card holder comprises a card holder body, an antenna, a feeding point and a feeding point, at least one SIM card insertion cavity is arranged on the card holder body, the antenna is at least formed on one side end surface of the card holder body along a thickness direction, the antenna is arranged along an outer periphery of the SIM card insertion cavity, the feeding point and the feeding point are arranged on an outer side wall of the card holder body, the feeding point is electrically connected with a radiation end of the antenna, and the feeding point is electrically connected with a grounding point of the antenna, wherein the feeding point and the feeding point are configured to be electrically connected with corresponding contact points of the mobile terminal, by arranging the antenna on the card holder body, the antenna setting position limit can be reduced, the antenna performance is improved, and the anti-interference capability is enhanced.

The utility model discloses a kind of radio frequency transceiving architecture and navigation equipment, it is related to radio frequency communication technical field, including array antenna module, radio frequency front-end Sip chip, transceiver chip and anti-interference baseband;Array antenna module is used to receive satellite navigation signal;Radio frequency front-end Sip chip integration finite amplifier, low-noise amplifier and acoustic surface filter, for processing satellite navigation signal to obtain pre-processing radio frequency signal;Transceiver chip integration has down-conversion module and up-conversion module;Down-conversion module converts pre-processing radio frequency signal into intermediate frequency signal;Anti-interference baseband is output to up-conversion module after intermediate frequency signal is handled by anti-interference algorithm;Up-conversion module converts intermediate frequency signal into radio frequency navigation signal and is output to navigation receiver.This scheme can solve the technical problems of numerous component models, high equipment cost, not conducive to miniaturization and light weight, high power consumption of existing navigation anti-interference equipment transceiving architecture.

This utility model belongs to the field of wafer insertion machine technology, specifically relating to a four-head wafer insertion machine layout structure, including: a conveyor production line, a three-axis transport device, a full basket conveyor line, and a return basket production line. Each conveyor production line is used to transport silicon wafers along the y-axis direction. Each conveyor production line has a lifting and loading device at its end, with a basket for loading silicon wafers mounted on it. The full basket conveyor line transports baskets loaded with silicon wafers along the y-axis direction, and the return basket production line transports empty baskets along the y-axis direction. The three-axis transport device moves baskets between the return basket production line, the full basket conveyor line, and the lifting and loading device. This utility model, through a reasonable equipment layout and automated operation process, effectively solves the technical problems of silicon wafer or equipment damage and low production efficiency caused by improper layout in existing technologies, achieving improved production efficiency and reduced breakage rate.

The present invention provides a gate transfer circuit and a display device. The gate transfer circuit includes multiple stages of gate transfer units. Each stage of the gate transfer unit includes a pre-charge module, a first output module, a second output module, an output pull-down module, a node pull-down module, and a stabilization module. The pre-charge module charges a first node according to a previous-stage transfer signal and a previous-stage gate signal. The first output module outputs a gate signal of the current stage according to the potential of the first node and a first clock signal of the current stage. The second output module outputs a transfer signal of the current stage according to the potential of the first node and a first clock signal of the current stage. The output pull-down module pulls down a first output terminal according to a subsequent-stage gate signal and a first low-level signal. The pull-down module pulls down the first node according to a subsequent-stage gate signal and a second clock signal of the current stage. The stabilization module is used to maintain a low level. The present invention can reduce the falling-edge time of the gate signal and improve the image quality of the product.

The utility model discloses a bipolar attenuator adopting a specifically packaged PIN diode, relates to the technical field of attenuators, and solves the technical problem that a traditional attenuator is difficult to consider both the size and the performance at the same time. The circuit comprises a positive-phase attenuation circuit and a negative-phase attenuation circuit which are vertically symmetrical, the input ends of the positive-phase attenuation circuit and the negative-phase attenuation circuit are electrically connected with a radio-frequency signal input end through a balun, and the output ends of the positive-phase attenuation circuit and the negative-phase attenuation circuit are electrically connected with a radio-frequency signal output end. The positive-phase attenuation circuit is electrically connected with a positive-phase control voltage, the negative-phase attenuation circuit is electrically connected with a negative-phase control voltage, and only one of the positive-phase attenuation circuit and the negative-phase attenuation circuit is conducted during use; according to the utility model, the performance requirement is met, the miniaturization requirement is also met, the application scene is diversified, and the circuit can be effectively protected.

The present application relates to a kind of thermal management system and its control method, specifically, a kind of AMT clutch thermal management system and the control method of the thermal management system.The system includes temperature sensor, signal interface, gearbox controller, heat exchange module, electric water pump and engine cooling system;Temperature sensor is installed on clutch pressure disc, and the output end of temperature sensor is electrically connected with the input end of gearbox controller by signal interface installed on clutch actuator;Heat exchange module is installed on the inner side wall of clutch shell, and the output end of engine cooling system is communicated with the input end of heat exchange module, and the input end is communicated with the output end of heat exchange module;Electric water pump is installed on the output end of engine cooling system, and its control end is electrically connected with the control end of gearbox controller.The present application can quickly heat or cool clutch pressure disc, keep clutch transmission torque characteristic at a stable value, and ensure the running state of vehicle.

The utility model relates to the technical field of circuit board especially is involved in a kind of double-spliced PCB layout structure based on aluminium substrate, it includes: aluminium substrate, insulation treatment is carried out on aluminium substrate and is covered with copper, to form copper-clad layer, first area and second area are provided on copper-clad layer, first area is used to place high-power device and forms electrical connection;PCB board, PCB board is set to the second area of copper-clad layer and is used to place small power component, PCB board is electrically connected with the first area and the second area of copper-clad layer respectively by the mode of soldering tin, forms electrical conduction.This application passes through the adoption of double-spliced layout, small power component can avoid direct contact with aluminium substrate, to reduce the overall thermal conductivity, so that the temperature of element on PCB board is significantly lower than direct placement on aluminium substrate, to increase the life of element.