4 results about "Mode coupling" patented technology

This application relates to the field of communications, providing a multimode resonator and filter. The multimode resonator has at least two resonance modes: HE mode and HE mode. The multimode resonator includes a resonator housing, a dielectric resonator, and a coupling structure. The dielectric resonator is disposed within the resonator housing and connected to a first wall of the housing. The two electric field polarization directions of the HE mode are along a first radial direction and a second radial direction, respectively, and the first and second radial directions intersect perpendicularly at the central axis of the dielectric resonator. The coupling structure is disposed at one end of the dielectric resonator and intersects perpendicularly at the central axis of the dielectric resonator. The coupling structure is set at an angle to both the first and second radial directions to achieve HE dual-mode coupling. The multimode resonator can achieve HE dual-mode coupling through a simplified and optimized coupling structure, resulting in better coupling performance. This optimizes the structural design, coupling design, and overall performance of the multimode resonator, and facilitates the simulation design of the multimode resonator.

This invention provides a method for evaluating the long-term stability of vibration-damping elastomers under multi-mode coupling environments. The method includes sample preparation, test setup, test parameter setting, collaborative detection, damage source tracing, accelerated calculation, and life prediction. Collaborative detection includes macroscopic and microscopic detection; damage source tracing involves determining the contribution ratio of each component; accelerated calculation yields the total acceleration coefficient; and life prediction is based on the acceleration coefficient, providing a scientific basis for formulation optimization, structural design, and engineering applications. The method for evaluating the long-term stability of vibration-damping elastomers under multi-mode coupling environments provided by this invention realistically simulates the synergistic effect of damp heat and dynamic load, achieving rapid and accurate life prediction.

This invention discloses a four-way filter power divider. The device includes stacked upper and lower metal surfaces and a middle dielectric substrate. The substrate contains a resonant cavity structure surrounded by an array of metallized vias. Its core feature is a centrally symmetrical cross-shaped layout: a square first SIW resonant cavity is located at the center, and four identical rectangular second to fifth SIW resonant cavities are respectively located at the centers of its four sides and coupled to it through coupling windows. The input port is located at one corner of the first resonant cavity, and the four output ports are located on the four rectangular cavities. The central cavity operates at TE... 201 The mold, with four cavities around it, operates at TE. 101 The filter passband is constructed through mode coupling. By using metallized vias of different diameters to construct the cavity boundary and coupling window, a balance between high performance and ease of fabrication is achieved. This invention has advantages such as excellent output amplitude and phase consistency, low insertion loss, compact structure, and ease of integration and mass production.

The application discloses a mode coupling control method and device based on a long-period fiber grating, relates to the field of lasers, and provides the method, which comprises the following steps: preparing a long-period fiber grating, wherein the long-period fiber grating comprises at least one grating area, a preset offset exists between the resonant peak central wavelength of any grating area and the central wavelength of incident laser, and the preset offset makes the initial working transmittance of the grating area be in the maximum slope region of the transmittance spectrum of the grating area; for any grating area, a deformation control device is driven to adjust the curvature radius of the grating area multiple times, the coupling efficiency corresponding to each curvature radius is recorded, and a record data point set is constructed; an actual coupling model is constructed by using the record data point set; and the deformation control device is controlled to adjust the curvature radius of the grating area by using the actual coupling model, so that the actual coupling efficiency of the grating area is consistent with a target coupling efficiency. The application can realize high-precision and continuously adjustable grating mode control, and significantly improves the laser processing quality.