9 results about "Coupling noise" patented technology

Techniques are provided for reducing cross-coupled noise. For example, a method includes coupling an input node to a ground by a primary shunt switch in a closed state, decoupling an output node from the input node by a primary through switch in an open state, switching the primary shunt switch from the closed state to an open state to decouple the input node from the ground, switching the primary through switch from the open state to a closed state to couple the output node to the input node and provide a circuit path for an RF signal from an RF source to a load, and switching an ancillary switch from an open state to a closed state to couple the ancillary switch across one of the primary switches to reduce cross-coupled noise. Additional systems, devices, circuits, and methods are also provided.

To provide a display device capable of improving display quality by reducing coupling noise generated between wirings.SOLUTION: The display device includes a base layer including a display area in which a plurality of pixels are disposed and a non-display area disposed around the display area, a gate driver disposed in the non-display area and outputting a write scan signal, a scan line applying the write scan signal to the plurality of pixels and including a vertical line extending from the gate driver in a first direction and a horizontal line electrically connected to the vertical line and extending in a second direction crossing the first direction, and a shielding pattern overlapping the vertical line on a plane.SELECTED DRAWING: Figure 9A

This invention discloses a method for calculating noise through direct coupling between a worm gear structure and its acoustic field, belonging to the field of noise prediction technology for mechanical transmission systems. The method includes: decomposing the time-domain torque into DC and AC components; establishing a structure-acoustic field coupled finite element model with a matching layer (PML); solving for steady-state prestress using the DC component; treating the AC component as a disturbance under prestress, and directly solving the coupled dynamic equations through harmonic response to obtain the full-field sound pressure response in one step; finally, extracting the sound pressure level distribution to achieve noise prediction. This invention overcomes the shortcomings of the traditional "two-step method" (cumbersome process, neglecting the acoustic radiation of the worm gear itself) by linearizing the prestress and using a one-step direct coupling solution, achieving fast and high-fidelity noise prediction under steady-state conditions, significantly improving computational efficiency and accuracy.

Techniques are provided for reducing cross-coupled noise. For example, a method includes coupling an input node to a ground by a primary shunt switch in a closed state, decoupling an output node from the input node by a primary through switch in an open state, switching the primary shunt switch from the closed state to an open state to decouple the input node from the ground, switching the primary through switch from the open state to a closed state to couple the output node to the input node and provide a circuit path for an RF signal from an RF source to a load, and switching an ancillary switch from an open state to a closed state to couple the ancillary switch across one of the primary switches to reduce cross-coupled noise. Additional systems, devices, circuits, and methods are also provided.

The invention discloses a CMOS low-noise amplifier topological structure based on noise cancellation and gain enhancement, and belongs to the field of CMOS radio frequency integrated circuits. Comprising a mixed noise cancellation module which adopts a'multi-coil phase coupling + five-order resonance 'mixed mechanism, and a gain collaborative enhancement module which adopts a'transconductance enhancement + differential gain compensation' two-stage structure. The input matching module is a pi-type passive matching network, is composed of two capacitors and an adjustable inductor, is adaptive to impedance matching of an ultra-wideband of 500MHz-10GHz, and provides passive voltage gain at the same time; the mixed noise cancellation mechanism can synchronously suppress coupled noise, thermal noise, parasitic noise and out-of-band interference, and compared with the prior art, the noise coefficient is remarkably optimized, and the signal purification capacity is higher; the gain cooperative enhancement module realizes wide-band coverage, high-frequency gain roll-off is effectively suppressed through gain compensation design, full-band gain fluctuation is controlled within a reasonable range, and both the broadband characteristic and the high-gain performance are considered.

The application relates to the technical field of integrated circuit quality testing, in particular to an integrated circuit quality testing method and system, which comprises the following steps: executing a preset test instruction set to perform electrical parameter testing on an integrated circuit chip; when any electrical parameter value of the chip deviates from a preset range, recording the initial electrical parameter measurement value when the electrical parameter deviates from the preset range, the identification of the test instruction sequence and the chip pin number where the abnormality occurs; repeatedly executing the test instruction sequence according to the recorded identification of the test instruction sequence and the chip pin number, and adjusting the test conditions to change the electrical margin of the chip when the test instruction sequence is repeatedly executed, so as to obtain secondary verification electrical parameter measurement values; through the introduction of the secondary verification and electrical margin adjustment mechanism, the false electrical parameter abnormality caused by signal coupling noise can be effectively distinguished from the real physical defects of the chip.

This utility model relates to the field of microphone technology and discloses a low-noise microphone packaging unit, including a base and pins equidistantly fixed inside the base. A slot is formed on the upper surface of the base, and a cover plate is inserted into the slot. A silicone block is fixedly connected to the inner wall of the cover plate, and a sealing component is installed at the connection between the cover plate and the base. This utility model, through the setting of a sealing component and a multi-layered sealing structure involving the sliding of the sealing block, the expansion of the airbag, and the adhesion of the silicone pad, blocks external noise and dust, ensuring the low-noise performance of the microphone. The silicone block also buffers vibration and improves the stability of chip operation. Furthermore, the base uses a BT resin organic substrate, which reduces electromagnetic coupling noise and suppresses vibration noise. When removing the cover plate of the packaging unit, the sealing bolts are unscrewed to release the high pressure, and the cover plate can be quickly removed to replace the chip with the help of the silicone elastic block, reducing the risk of substrate damage, simplifying the process, and improving efficiency.

The application relates to the technical field of vehicle vibration, in particular to a mode coupling noise suppression method and device, a vehicle, a medium and a program product, wherein the method comprises the following steps: obtaining operation data of a motor and local modal data of the motor on a preset transmission path; based on the operation data and the local modal data, determining mode coupling noise of the vehicle; if the mode coupling noise is greater than a preset noise threshold, corresponding noise suppression instructions are generated, and the mode coupling noise is suppressed until the mode coupling noise after suppression is less than or equal to the preset noise threshold. Therefore, in the related art, the motor performance improvement and cost control are difficult to balance, the full working condition dynamic excitation under a wide speed range cannot be covered, structural changes lead to a long research and development cycle and increase the weight of the vehicle body, affect the endurance, lack of dynamic adaptive regulation and control ability based on real-time working conditions, and it is difficult to effectively solve the complex mode coupling noise and other problems from the source without sacrificing the core performance of the vehicle.

This application provides a noise testing method, system, and electronic device, relating to the field of power communication. The method includes: acquiring noise testing requirements and noise data to be tested, comprising broadband noise data and narrowband noise data; determining broadband and narrowband noise coupling characteristics matching the noise testing requirements based on the configuration of various mode structures in a multi-mode noise database and their mappings, the broadband and narrowband noise coupling characteristics including noise coupling operation modes, noise coupling data structures, and noise coupling condition parameters; coupling the noise data to be tested based on the broadband and narrowband noise coupling characteristics to generate broadband and narrowband coupled noise data; determining the network noise topology corresponding to the broadband and narrowband coupled noise data, enabling testing and analysis of the broadband and narrowband coupled noise data based on the network noise topology. This application solves the problem of low accuracy in existing broadband and narrowband coupled noise testing technologies.