3results about How to "Suppress coupling" patented technology

The invention provides a two-wheeled electric vehicle. The two-wheeled electric vehicle comprises: a frame; the wheel at least comprises a front wheel assembly; the steering assembly is located on the front portion of the frame and used for changing the driving direction of the front wheel assembly; the vehicle body covering part comprises an outer covering part located in front of the steering assembly and an inner covering part located behind the steering assembly, and the outer covering part is connected with the inner covering part; the vehicle body covering part further comprises an inner mounting plate located between the outer covering part and the inner covering part, at least part of the inner mounting plate is located in front of the steering assembly, and the inner mounting plate is fixedly connected with the inner covering part. And the electric appliance assembly comprises a controller and a converter, and the controller and the converter are both arranged on the surface of the side, away from the steering assembly, of the inner mounting plate. The problems that in the prior art, electric appliance assemblies at the front end of a two-wheeled electric vehicle are distributed dispersedly, wiring is disordered, and the space utilization rate is low are solved.

The utility model discloses a small -size base station antenna frame for disaster emergency, including substrate and the MxN antenna array integrated on the substrate, the antenna array is divided into a plurality of pxp sub -matrix that can work independently, and each sub -matrix contains pxp radiating unit and a plurality of radio frequency switches, and each radio frequency switch is connected two adjacent diagonal radiating unit respectively, and each sub -matrix back surface is provided with antenna rotation unit, the utility model divides the antenna array into a plurality of sub -array, adopts radio frequency switch control feed network, supports a variety of sub -array combination mode, and mode switching time reduces from minute level to millisecond level, and disaster response speed is greatly promoted. The utility model positioning accuracy enhances, compared with the traditional scheme >5m precision, adopt the multi -sub -array TDOA joint positioning error of utility model antenna structure <1m. In addition, the coplanar design can directly replace the existing base station antenna, need not structural reconstruction, and the compatibility is strong.

The application discloses an anti-resonant fiber optimization design method and system for infrared waveband transmission, and belongs to the technical field of optical fiber communication, and comprises the following steps: constructing an air-core anti-resonant fiber model for cooperatively optimizing limited loss and bending loss in a target infrared waveband, wherein the air-core anti-resonant fiber model has a five-tube nested structure; selecting a group of key structure parameters to be optimized; determining the theoretical value range of the large-circle wall thickness and the small-circle wall thickness based on the anti-resonant optical principle, and combining with the preparation process constraint to determine the common feasible domain of all the key structure parameters; and cooperatively optimizing through phased parameterization scanning, wherein the optimization parameter subspace is determined through coarse scanning, and the optimal structure parameter combination meeting the preset loss threshold is screened out in the subspace through fine scanning. According to the application, the fiber structure parameters are cooperatively optimized in the 808 nm waveband, the limited loss and the bending loss are significantly reduced, and good process feasibility is ensured.