Topological interference power divider, power control method and related equipment

Abstract

The invention provides a topological interference power divider, a power control method and related equipment. The topological interference power divider comprises a dielectric substrate; the upper copper layer and the lower copper layer are arranged on the surface of the dielectric substrate; the valley photonic crystal structure is composed of triple symmetric apertures of periodic triangular lattices etched on the upper copper layer; the structure comprises A-type unit cells and B-type unit cells which are alternately arranged, the topological waveguide channel is a domain wall formed by the interface of the A-type unit cell and the B-type unit cell, and the channel comprises a plurality of branches which are intersected in a central area to form a coherent interference area; the input port and the output port are respectively arranged at the head end and the tail end of the topological waveguide channel; a matching network is arranged between each port and the channel and is used for realizing conversion between a conventional guided wave mode and a topological edge state; the modulation of the output power distribution ratio, the central working frequency or the transmission bandwidth of the topological interference power divider can be realized by regulating and controlling the topological edge state in the coherent interference region, and the flexibility and the reconstruction capability of power distribution are improved.

Description

Technical Field

[0001] This application relates to the field of topological photonic crystal technology, and in particular to topological interference power dividers, power control methods and related equipment. Background Technology

[0002] In the fields of microwave communication and integrated circuits, topological interference power dividers are core components for realizing flexible distribution and scheduling logic of electromagnetic energy. Current related technologies typically utilize traditional waveguide structures such as Wilkinson power splitters or directional couplers. Their design principles heavily rely on resonance or wavelength phase matching at specific frequencies, aiming to guide the flow of electromagnetic waves through a fixed physical path, thereby attempting to achieve signal transmission between multiple ports within a microwave system.

[0003] However, this signal distribution scheme using a fixed physical path suffers from severe signal transmission loss and poor system robustness when dealing with real-world high-density integration scenarios. This is because electromagnetic waves are prone to severe backscattering at bends, defects, or impedance mismatch points. Furthermore, the output distribution ratio of traditional topological interference power dividers cannot be changed after hardware fabrication, making it impossible to dynamically adjust the power ratio of each port according to real-time service requirements. Ultimately, this results in extremely low power distribution flexibility for topological interference power dividers, making it difficult to support the stringent requirements of modern communication systems for multi-band dynamic reconfiguration and high-performance electromagnetic environments. Summary of the Invention

[0004] This application provides a topological interference power divider, a power control method, and related equipment, which can improve the power distribution flexibility of the topological interference power divider.

[0005] To achieve the above objectives, a first aspect of this application provides a topological interference power divider, comprising:

[0006] Dielectric substrate; Upper copper layer and lower copper layer disposed on the surface of the dielectric substrate; The valley photonic crystal structure is composed of triple-symmetric apertures of a periodic triangular lattice etched on the upper copper layer; the valley photonic crystal structure includes alternating A-type unit cells and B-type unit cells, and the rotation angle of the A-type unit cells is opposite to that of the B-type unit cells; The topological waveguide channel is a domain wall formed at the interface between the type A unit cell and the type B unit cell. The topological waveguide channel includes multiple branches that converge in the central region to form a coherent interference region. The input port and the output port are respectively located at the beginning and end of the topological waveguide channel; Matching networks are provided between the input port, the output port and the topological waveguide channel. The matching networks are used to realize the conversion between conventional waveguide modes and topological edge states, and to transmit or extract signals to the coherent interference region. In single-port excitation mode, by adjusting the valley photonic crystal structure parameters of the coherent interference region, all output ports output equal power; In dual-port excitation mode, the output power distribution ratio, center operating frequency, or transmission bandwidth of the topological interference power divider can be modulated by adjusting the phase or interference conditions of the topological edge states within the coherent interference region.

[0007] In some embodiments, the matching network includes a tapered bridge and a triangular transition section connecting the tapered bridge and the topological waveguide channel.

[0008] In some embodiments, the edge profile curve of the tapered bridge evolves exponentially along the signal transmission direction, the width of the triangular transition segment gradually narrows from the tapered bridge toward the topological waveguide channel, the edge profile curve has a first width at the end connected to the input port and a second width at the end connected to the triangular transition segment, and the second width is smaller than the first width.

[0009] In some embodiments, the triple symmetric aperture is an equilateral triangle aperture, the rotation angle corresponding to the type A unit cell is a first angle, and the rotation angle corresponding to the type B unit cell is a negative of the first angle.

[0010] In some embodiments, the topological waveguide channel includes at least one zigzag path with a 120-degree bend angle.

[0011] In some embodiments, the topological waveguide channel is further provided with a physical adjustment component, which is a metal rectangular strip disposed at the domain wall, and the metal rectangular strip is located at the splicing gap between the type A unit cell and the type B unit cell.

[0012] In some embodiments, the width of the metal rectangular strip is determined according to a preset center operating frequency, and the projection of the metal rectangular strip on the upper copper layer covers a portion of the domain wall.

[0013] In some embodiments, the central region is formed by the A-type unit cells and the B-type unit cells arranged symmetrically at the geometric center.

[0014] In some embodiments, the input port includes a first input terminal and a second input terminal, the first input terminal and the second input terminal being respectively connected to the coherent interference region through the matching network.

[0015] To achieve the above objectives, a second aspect of this application provides a power control method for a topological interference power divider, as shown in the first aspect, the method comprising: A first excitation signal is input through the first input port, and a second excitation signal is input through the second input port; Adjusting the relative phase difference between the first excitation signal and the second excitation signal to change the field distribution within the coherent interference region; The power distribution ratio of the output port is adjusted according to the change in the relative phase difference.

[0016] To achieve the above objectives, a third aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the power control method for the topological interference power divider as described in the first aspect.

[0017] To achieve the above objectives, a fourth aspect of the present application provides a storage medium, which is a computer-readable storage medium storing a computer program that, when executed by a processor, implements the power control method of the topological interference power divider described in the first aspect.

[0018] The topological interference power divider, power control method, and related equipment proposed in this application include: a dielectric substrate; an upper copper layer and a lower copper layer disposed on the surface of the dielectric substrate; a valley photonic crystal structure composed of triple-symmetric apertures of a periodic triangular lattice etched on the upper copper layer; the valley photonic crystal structure includes alternating A-type unit cells and B-type unit cells, with the rotation angles of the A-type unit cells opposite to those of the B-type unit cells; a topological waveguide channel, which is a domain wall formed at the interface between the A-type and B-type unit cells, and the topological waveguide channel includes multiple branches that converge in the central region to form a coherent interference region; and an input port. The input and output ports are located at the beginning and end of the topological waveguide channel, respectively. Matching networks are provided between the input and output ports and the topological waveguide channel. These matching networks are used to convert between conventional guided wave modes and topological edge states, and to transmit or extract signals to or from the coherent interference region. In single-port excitation mode, the valley photonic crystal structure parameters of the coherent interference region are adjusted to ensure equal power output from all output ports. In dual-port excitation mode, the output power distribution ratio, center operating frequency, or transmission bandwidth of the topological interference power divider are modulated by controlling the phase or interference conditions of the topological edge states within the coherent interference region.

[0019] This application's embodiments construct a transmission channel by utilizing the topological domain walls formed by the boundaries of A-type and B-type unit cells. By leveraging the robustness of the topological edge states, backscattering of signals at bends or defects is fundamentally suppressed, significantly reducing transmission loss and solving the problem of severe performance degradation in high-density integration scenarios. Simultaneously, the introduction of a matching network enables efficient mode conversion and smooth connection between traditional signals and topological states. Combined with the coherent interference mechanism in the central region, the system can overcome the limitations of fixed physical paths and achieve continuous dynamic control of the output power ratio by adjusting the input phase. This greatly enhances the flexibility and reconfiguration capability of power allocation, supporting the stringent requirements of modern communication systems for multi-band dynamic scheduling and high-performance topological interference power dividers in complex electromagnetic environments.

[0020] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0021] Figure 1 This is a three-dimensional simulation diagram and magnified schematic diagrams of type A and type B unit cells of a topological interference power divider provided in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of a type A and type B edge state structure and its dispersion, provided in another embodiment of this application.

[0023] Figure 3 This is a schematic diagram illustrating the structural parameters of the matching network and its connection with the valley photonic crystal interface in a topological interferometric power divider, provided in another embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the power distribution control principle and simulation results of a topological interference power divider in single-excitation mode, provided by another embodiment of this application.

[0025] Figure 5 This is a physical sample of a topological interference power divider provided in another embodiment of this application, and a schematic diagram of the control performance of the interference topological interference power divider under different external phase differences.

[0026] Figure 6 This is a simulation result and performance curve diagram of a topological interference power divider that achieves power routing through frequency regulation under a fixed external phase difference, according to another embodiment of this application.

[0027] Figure 7 This is a flowchart of a power control method for a topological interference power divider provided in another embodiment of this application.

[0028] Figure 8 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be noted that although functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0032] In the fields of microwave communication and integrated circuits, topological interference power dividers are core components for realizing flexible distribution and scheduling logic of electromagnetic energy. Current related technologies typically utilize traditional waveguide structures such as Wilkinson power splitters or directional couplers. Their design principles heavily rely on resonance or wavelength phase matching at specific frequencies, aiming to guide the flow of electromagnetic waves through a fixed physical path, thereby attempting to achieve signal transmission between multiple ports within a microwave system.

[0033] However, this signal distribution scheme using a fixed physical path suffers from severe signal transmission loss and poor system robustness when dealing with real-world high-density integration scenarios. This is because electromagnetic waves are prone to severe backscattering at bends, defects, or impedance mismatch points. Furthermore, the output distribution ratio of traditional topological interference power dividers cannot be changed after hardware fabrication, making it impossible to dynamically adjust the power ratio of each port according to real-time service requirements. Ultimately, this results in extremely low power distribution flexibility for topological interference power dividers, making it difficult to support the stringent requirements of modern communication systems for multi-band dynamic reconfiguration and high-performance electromagnetic environments.

[0034] To improve the power allocation flexibility of the topological interference power divider, this embodiment utilizes the topological domain walls formed by the boundaries of A-type and B-type unit cells to construct the transmission channel. By leveraging the robustness of the topological edge states, backscattering of the signal at bends or defects is fundamentally suppressed, significantly reducing transmission loss and solving the problem of severe performance degradation in high-density integration scenarios. Simultaneously, the introduction of the matching network enables efficient mode conversion and smooth connection between traditional signals and topological states. Combined with the coherent interference mechanism in the central region, the system can overcome the limitation of fixed physical paths and achieve continuous dynamic control of the output power ratio by adjusting the input phase. This greatly enhances the flexibility and reconfiguration capability of power allocation, supporting the stringent requirements of modern communication systems for multi-band dynamic scheduling and high-performance routing in complex electromagnetic environments.

[0035] The topological interference power divider, power control method, and related equipment provided in this application will be described in further detail below. First, the topological interference power divider will be described.

[0036] Reference Figure 1 This is a three-dimensional simulation diagram and magnified schematic diagrams of type A and type B unit cells of a topological interferometric power divider provided in an embodiment of this application. Figure 1 As shown, the dielectric substrate constitutes the physical support base of the entire topological interference power divider and the dielectric carrier for electromagnetic wave transmission. This dielectric substrate is typically made of a low-loss tangential material, such as a polytetrafluoroethylene (PTFE) high-frequency laminate or a ceramic substrate, to reduce the dielectric loss of microwave signals within the substrate and ensure efficient transmission of electromagnetic energy in the integrated environment.

[0037] In some embodiments, the upper and lower copper layers disposed on the surface of the dielectric substrate constitute a typical substrate integrated waveguide (SIW) cavity. The lower copper layer serves as the overall grounded metal surface, while the upper copper layer is etched to form a specific geometry. The two copper layers and the intermediate dielectric substrate together restrict the vertical divergence of electromagnetic waves and lock their electromagnetic field distribution between the metal layers for horizontal conduction.

[0038] In some embodiments, the valley photonic crystal structure is composed of a triple-symmetric aperture of a periodic triangular lattice etched on an upper copper layer. Here, a valley photonic crystal refers to an artificial electromagnetic structure that manipulates electromagnetic waves using the principles of photonic band theory by introducing periodically arranged geometric apertures on a metal layer; the triple-symmetric aperture specifically refers to an equilateral triangular aperture with 120° rotational symmetry. This structure breaks the inversion symmetry of physical space by alternating A-type and B-type unit cells with opposite rotational angles, thereby generating a topological bandgap at a specific band position and achieving the locking and guidance of electromagnetic waves of a specific frequency.

[0039] In this embodiment of the application, the valley photonic crystal structure includes alternating A-type unit cells ( =30°) and B-type unit cell ( =-30°). The interface between the two forms a domain wall, supporting topological edge state propagation. AB-type edge state dispersion is concave, while BA-type edge state dispersion is convex. They are locked to different pseudospin valleys (K or K). The valley then excites a unidirectional transmission state with opposite vortex chirality, laying the foundation for subsequent power distribution.

[0040] In some embodiments, the topological waveguide channel is a domain wall formed at the interface between a type A unit cell and a type B unit cell. A domain wall is the interface formed when two physical regions with different topological properties (i.e., type A and type B lattices) are connected. Electromagnetic waves are restricted by the topological protection principle and can only propagate along this interface path, unable to enter the bandgap regions on either side. The topological waveguide channel includes multiple branches, which converge at the geometric center to form a coherent interference region. This region utilizes the superposition interference effect of multiple topological edge state signals to constitute the core physical logic of power distribution.

[0041] In some embodiments, the input port and output port are located at the beginning and end of the topological waveguide channel, respectively. The input port is responsible for receiving microwave signals from an external excitation source, while the output port is responsible for leading the electromagnetic energy, after being distributed by the topological interference power divider, to the back-end circuitry. These ports are typically connected to standard microstrip lines or coaxial connectors and serve as the interface for energy exchange between the device and the system-level circuitry.

[0042] In some embodiments, a matching network is provided between the input port, the output port, and the topological waveguide channel. This matching network is used to convert between conventional guided wave modes and topological edge states, and to transmit or extract signals to or from the coherent interference region. The matching network is composed of a gradient-structured metallic pattern, and its core function is to solve the mismatch problem between the impedance of the conventional microstrip line and the characteristic impedance of the topological waveguide channel. Through mode conversion, it can convert conventional quasi-transverse electromagnetic waves (TEM waves) into topologically protected valley-locked edge states, thereby ensuring extremely low return loss and reflection when the signal enters the topological interference power divider.

[0043] In some embodiments, under single-port excitation mode, the valley photonic crystal structure parameters of the coherent interference region are adjusted to ensure that all output ports output equal power. "Single-port excitation mode" refers to the operating state where an electromagnetic signal is fed from only one of the first or second input ports. In this mode, by fine-tuning structural parameters such as the geometric orientation, scaling ratio, or lattice constant of the unit cells within the coherent interference region, the scattering and coupling characteristics of the region to the incident topological edge state signal can be altered. Since the structural arrangement of the interference region determines the initial weight of energy coupling to each output branch, precisely setting these physical parameters can compensate for the inherent asymmetric losses or path differences in the structure, thereby ensuring that, under a single signal source, electromagnetic energy can be evenly distributed among the output ports, achieving the preset technical target of equal power distribution.

[0044] In some embodiments, under dual-port excitation mode, the output power distribution ratio, center operating frequency, or transmission bandwidth of the topological interference power divider can be modulated by adjusting the phase or interference conditions of the topological edge states within the coherent interference region. "Dual-port excitation mode" refers to simultaneously feeding excitation signals with specific correlations from two input ports. Adjusting the "phase or interference conditions of the topological edge states within the coherent interference region" means using an external control unit or physical adjustment device to change the relative phase difference or propagation characteristics of the two topological edge states. This adjustment mechanism utilizes the principle of constructive or destructive wave interference, causing a spatial shift in the centroid of the interference field distribution, thereby controlling the proportion of energy flowing to different output ports, i.e., the "power distribution ratio." Simultaneously, by dynamically adjusting the interference conditions, the dispersion relation or frequency response of the system can be changed, thereby achieving a shift in the "center operating frequency" and a widening or narrowing of the "transmission bandwidth," greatly enhancing the device's reconfigurability and environmental adaptability in complex communication scenarios.

[0045] In some embodiments, the topological interference power divider provided in this application is a four-port structure, including two input ports (port A and port B) and two output ports (port 1 and port 2). The input ports and output ports are connected through a topological waveguide channel, which includes a 120° bend structure to ensure that the topological edge states are transmitted without backscattering.

[0046] The process employs a substrate-integrated structure, including an upper copper layer, a lower copper layer, and a dielectric substrate. The dielectric substrate uses F4B material with a thickness of t=1mm, a relative permittivity of 2.65, and a loss tangent of 0.002. The upper and lower copper layers are 0.035mm thick. The upper copper layer is etched with a triple-symmetric aperture of a periodic triangular lattice, forming a valley photonic crystal structure with a lattice constant a=6.5mm, an aperture length l=1.8mm, and a aperture width w=0.38mm. The selected angle... Valley photonic crystals consist of alternating A( =30°) type unit cell and B ( =-30°) type unit cell.

[0047] In summary, the topological interferometric power divider provided in this application combines topological physics with microwave interferometry through substrate integration technology. Utilizing the topological edge states provided by the domain walls of valley photonic crystals, it achieves backscatter-free transmission of electromagnetic waves through complex paths and sharp bends, significantly improving the device's robustness in complex electromagnetic environments. Combined with the efficient mode switching of the matching network and the modulation mechanism of the central coherent interference region, this scheme overcomes the limitation of fixed function in traditional power topological interferometric power dividers. It can achieve continuous reconstruction of the output power ratio through phase modulation, exhibiting significant advantages such as low loss, high integration, and strong dynamic scheduling capabilities.

[0048] In some embodiments, the matching network includes a tapered bridge and a triangular transition section connecting the tapered bridge and the topological waveguide channel. Here, the matching network refers to the connecting component used to balance impedance differences between different transmission structures; the tapered bridge is a metal transition structure with gradually varying geometric dimensions, primarily responsible for the initial impedance transformation; while the triangular transition section is a buffer region located between the tapered bridge and the topological waveguide inlet, its function being to guide electromagnetic waves from the quasi-TEM waveguide mode to the confined topological domain wall mode. Through this two-stage stepped structural design, the signal can be smoothly injected from the external input into the physical channel with topological characteristics, avoiding signal scattering caused by structural abrupt changes.

[0049] In some embodiments, the edge profile of the tapered bridge evolves exponentially along the signal transmission direction. This exponential evolution means that the width variation of the metal structure follows an exponential distribution. This specific geometric deformation provides optimal broadband impedance matching characteristics in microwave engineering. Compared to a linear gradient, the exponential edge more effectively suppresses return loss over a wide bandwidth, resulting in a more continuous and uniform change in characteristic impedance as electromagnetic waves pass through the tapered bridge, thus significantly improving energy transmission efficiency.

[0050] In some embodiments, the width of the triangular transition section gradually narrows from the tapered bridge toward the topological waveguide channel. The triangular transition section acts as a mode converter, its gradually narrowing geometry physically focusing the energy distribution of the electromagnetic field. Since the domain wall width of the topological waveguide channel is typically on a subwavelength scale, the narrowing of the triangular transition section compresses and couples the broad electric field distribution at the output of the tapered bridge to the narrow domain wall interface, achieving efficient conversion between conventional transmission line modes and topological edge modes.

[0051] In some embodiments, the edge profile curve has a first width at one end connected to the input port and a second width at one end connected to the triangular transition section, and the second width is smaller than the first width. The first width here is usually set according to the size of the external feeder (such as a standard 50-ohm microstrip line) to ensure connection stability and impedance continuity at the port; the second width is a reduced width designed to match the starting size of the backend triangular transition section. This design of the width span not only clarifies the directionality of energy flow but also further optimizes the coupling performance of signals between different metal structure levels through the gradual decrease of physical dimensions.

[0052] Referring to Figure 2 , it is a schematic diagram of the A-type and B-type edge state structures and their dispersions provided by an embodiment of the present application. As can be seen from the dispersion schematic diagram, the domain walls formed by the AB-type and BA-type interfaces support topologically protected edge state transmission, and the two respectively exhibit concave and convex dispersion curves. This unique valley locking property lays a physical foundation for subsequent realization of unidirectional transmission and interference power distribution.

[0053] In the matching network design of some embodiments, a key transition structure is provided between the input port, the output port, and the topological waveguide channel. The matching network consists of two parts: a tapered bridge and a triangular transition section. Referring to Figure 3 , it is a schematic diagram of the structural parameters of the matching network in a topological interference power splitter provided by an embodiment of the present application and its connection relationship with the valley photonic crystal interface. As Figure 3 shown in, the matching network is arranged between the input port and the topological waveguide channel (domain wall) and consists of two-level structures: a tapered bridge and a triangular transition section. One end of the tapered bridge is connected to an external conventional transmission line, and the other end is connected to the triangular transition section through a specific geometric deformation. Finally, the signal is injected into the topological interface through the tip of the triangular section.

[0054] In the definition of geometric parameters of some embodiments, the edge profile curve of the tapered bridge is not linear but evolves as an exponential function along the signal transmission direction, specifically defined by the formula y = C1e^(βx) + C2 (x1 < x < x2), where C1 = (y2 - y1) / (e^(βx2) - e^(βx1)), C2 = (y2e^(βx1) - y1e^(βx2)) / (e^(βx1) - e^(βx2)), β = 1.1, and P1(x1, y1) and P2(x2, y2) respectively represent the coordinate points of the tapered bridge at the input end and the output end. This design of the exponential series aims to minimize the reflection loss between the conventional transmission line and the topological structure through a smooth impedance gradient change.

[0055] As Figure 3As indicated in the diagram, the specific parameters of this matching network are: W1=2.7mm, W2=6.2mm, W3=3.4mm, L1=13.8mm, and L2=25mm, enabling impedance matching and smooth field transition between the traditional transmission line and the topology interface. This structure exhibits a precise proportional relationship: the tapered bridge has a first width (W2) at the input port and a second width (W3) at the triangular transition section. The continuous shrinkage of physical dimensions due to W2=6.2mm and W3=3.4mm is evident. The triangular transition section continues this trend, its width gradually narrowing from the end of the tapered bridge towards the topology waveguide channel. The length ratio of L1=13.8mm and L2=25mm ensures that electromagnetic field energy can be smoothly and focusedly coupled into the subwavelength-scale topology interface.

[0056] In summary, the topological interference power divider provided in this application achieves ultra-wideband impedance matching by designing a matching network with two-stage gradient logic and utilizing a tapered bridge that evolves through an exponential function. Furthermore, a gradually narrowing triangular transition segment facilitates a smooth transition from conventional electromagnetic modes to topological edge modes. This structural design effectively solves the signal reflection problem caused by impedance mismatch and mode differences between the topological physical structure and traditional planar circuits, resulting in significant reductions in return loss, increased transmission bandwidth, and improved signal coupling efficiency.

[0057] In some embodiments, the triple-symmetric apertures are specifically constructed as equilateral triangular apertures. These equilateral triangular apertures are periodically etched onto the upper copper layer, forming a hexagonal lattice array. In this structure, "Type A unit cells" and "Type B unit cells" are distinguished by the orientation of their internal equilateral triangular apertures; specifically, the rotation angle of the triangular apertures in Type A unit cells relative to the lattice axis is set to a preset "first angle" (e.g., +30 degrees), while the rotation angle of the triangular apertures in Type B unit cells is a negative of the first angle (e.g., -30 degrees). Here, "rotation angle" refers to the physical quantity of angular displacement of the aperture around its unit cell center. By setting these opposite angles, the inversion symmetry of the valley photonic crystal in physical space is artificially broken, thereby generating a topological bandgap with opposite valley Chern numbers at the valley band, laying the physical basis for inducing topological edge states at the interface of different property regions.

[0058] In some embodiments, the topological waveguide channel includes at least one zigzag path with a 120-degree bend angle. A "zigzag path" refers to a nonlinear transmission trajectory with periodic directional changes formed along the domain walls at the boundary between type A and type B unit cells. The "120-degree bend angle" is a rotation parameter that matches the geometric symmetry of a hexagonal lattice. In conventional microwave waveguides, sharp bends often lead to severe electromagnetic backscattering, where signals are reflected back to the input due to impedance discontinuities or mode mismatches, resulting in significant energy loss. The zigzag path in this scheme utilizes the "valley-locked" characteristic of topological edge states, allowing electromagnetic waves to be topologically protected and transmitted forward without reflection along the sharp 120-degree bend, ensuring efficient signal guidance in complex wiring environments.

[0059] In summary, the topological interference power divider provided in this application breaks lattice symmetry by employing an equilateral triangular aperture with specific positive and negative rotation angles and constructing a zigzag topological waveguide path with a 120-degree bend angle, thus achieving robust electromagnetic wave transmission protected by topology. Its overall beneficial effects are: utilizing the robustness of valley topology edge states, the signal maintains extremely low backscattering and transmission loss even when experiencing large angles or abrupt path changes, significantly improving the transmission efficiency and design flexibility of the topological interference power divider under high-density integration and complex wiring conditions.

[0060] In some embodiments, a physical adjustment component is further provided within the topological waveguide channel. Specifically, the physical adjustment component is a rectangular metal strip disposed at the domain wall. Here, the physical adjustment component refers to a hardware compensation component used to intervene in or change the electromagnetic wave transmission characteristics; while the rectangular metal strip is a conductive metal sheet with a fixed geometry, typically made of the same copper material as the upper copper layer. The rectangular metal strip is located at the seam between the A-type and B-type unit cells. The seam refers to the boundary line where two lattice arrays with opposite rotation angles are physically connected, and it is also the region where the topological edge state energy is most concentrated. By introducing a rectangular metal strip at this core location, the local equivalent electromagnetic parameters at the domain wall can be changed, providing a physical means for later fine-tuning of device performance.

[0061] In some embodiments, the width of the metal rectangular strip is determined based on a preset center operating frequency. The center operating frequency refers to the target frequency at which the topological interference power divider performs its power distribution function, typically within the topological bandgap of a valley photonic crystal. Since the introduction of the metal rectangular strip generates electromagnetic disturbances, changing its width directly affects the dispersion characteristics of the topological waveguide channel, leading to an overall shift in the effective operating frequency band. By precisely designing the lateral width of the metal rectangular strip, the equal power distribution point of the topological interference power divider can be accurately aligned with the preset communication frequency band, ensuring the device's transmission performance at a specific operating frequency.

[0062] In some embodiments, the projection of the metal rectangular strip onto the upper copper layer covers a portion of the domain wall. Here, projection refers to the geometrical occupancy of the metal rectangular strip in a direction perpendicular to the substrate plane; the covered portion defines the spatial overlap between the metal modulator and the topological path. This structural layout ensures that the metal rectangular strip can effectively interact with the topological edge states excited on the domain walls. By partially covering the domain walls, the metal rectangular strip can achieve fine modulation of the electromagnetic wave phase velocity and group velocity without compromising the overall topological properties of the valley photonic crystal, thereby achieving the technical objective of optimizing transmission bandwidth and moving center frequency.

[0063] In summary, the topological interferometric power divider provided in this application achieves physical-level control of the device's electromagnetic response characteristics by introducing a metal rectangular strip with a specific width at the domain wall splicing point of the topological waveguide channel. This enables the topological interferometric power divider to possess frequency-adjustable technical attributes while maintaining topological robustness. By optimizing the geometric parameters of the metal adjustment component, the operating frequency band of the device can be significantly shifted and the effective bandwidth modulated, greatly enhancing the adaptability and flexibility of the topological interferometric power divider to different application scenarios and communication frequency bands.

[0064] In some embodiments, the central region is composed of A-type and B-type unit cells arranged with geometric centrosymmetry. Here, the central region refers to the core area where multiple topological waveguide channels converge, and it is also the physical location for the redistribution of electromagnetic energy. Geometric centrosymmetry means that the A-type and B-type lattice regions are axially or centrosymmetrically distributed around the geometric center point of this region. This highly symmetrical structural layout ensures that topological edge state signals entering from different branch paths have a consistent physical environment, laying the structural foundation for the field distribution uniformity in the subsequent coherent interferometry process.

[0065] In some embodiments, the input port includes a first input terminal and a second input terminal, which are respectively connected to the coherent interference region via matching networks. The first and second input terminals constitute the dual excitation source interface of the topological interferometric power divider, used to receive two externally input microwave signals. After mode conversion through the matching network, the signals are transformed into topologically protected edge-state energy flows, which converge to the coherent interference region along their respective topological waveguide branches. This dual-input structure design allows the topological interferometric power divider to utilize the external phase difference between the two signals as a control variable, and to dynamically guide the output energy flow direction within the interference region through vector superposition.

[0066] In some embodiments, the coherent interference region is a specific physical space in which multiple topological edge states coherently superimpose; the coherent interference region is composed of six unit cells arranged around a central symmetry point. This special hexagonal cluster structure forms a microscopic interference field distribution region at the central point. When topological signals carrying different phases are injected, the interference field will spatially deflect with the change of phase difference, thereby selectively coupling the synthesized electromagnetic energy to a specific output branch.

[0067] In summary, the topological interference power divider provided in this application realizes power distribution logic based on the wave coherence principle by constructing an interference region at the center of the topological interference power divider and coordinating with a dual-input port layout. By utilizing the field superposition effect of the topological edge states in the microscopic interference region, the topological interference power divider has extremely precise signal scheduling capabilities. By adjusting the phase difference of the input signal, the energy deflection of the coherent interference field on the output side can be controlled, thereby realizing a continuous, stable, and reconfigurable dynamic allocation of the output power ratio, significantly improving the functional integration and scheduling flexibility of the device.

[0068] In some embodiments, when only a single first input port or second input port is excited, power balance can be achieved by adjusting the rotation angle or scaling ratio of the central cell. In this embodiment, the central cell is removed (scaling ratio is 0) to obtain balanced power distribution at a 13 GHz operating frequency.

[0069] Reference Figure 4 This is a schematic diagram illustrating the power distribution control principle and simulation results of a topological interference power divider in single-excitation mode, provided in an embodiment of this application. Figure 4 As shown in subfigures (a) and (d), when only a single input port is excited (e.g., Source A is on and Source B is off), the topological edge state signal propagates and energy is distributed within the device. The simulation results clearly demonstrate how the electromagnetic wave propagates from the input end along the topological waveguide channel to the central interference region and is shunt to the two output ports.

[0070] like Figure 4 Subplot (b) shows the output power ratio as a function of the rotation angle of the central unit cell. A changing curve. In As the temperature gradually decreases from 0° to -30°, the output power ratio exhibits a good linear growth trend, proving that precise control of the output power can be achieved by fine-tuning the geometric orientation of the unit cell.

[0071] like Figure 4Subplot (c) illustrates the relationship between the output power ratio and the shrink factor of the central cell. As the shrink factor increases from 0 (removing a cell) to 1, the output power ratio exhibits a non-linear, exponential growth. This indicates that changing the size of the central cell is another effective reconfiguration technique, especially advantageous in scenarios requiring significant adjustments to the power allocation ratio.

[0072] Appendix Figure 4 The field distribution diagram and performance curves visually demonstrate how the topological interferometric power divider utilizes the geometric parameters (rotation angle or scaling ratio) of the central unit cell to achieve balanced and continuous control of the power distribution ratio of the two output ports, fully demonstrating the flexibility of device interference control.

[0073] In some embodiments, when both input ports (i.e., the first input port and the second input port) are excited simultaneously, the power distribution ratio satisfies the following relationship: R1=(|B1|²) / (|B1|²+|B2|²)=(1+cosΔφ) / 2, R2=(|B2|²) / (|B1|²+|B2|²)=(1-cosΔφ) / 2, where Δφ=φ A -φ B For the total phase difference, φ A φ B These represent the initial phases of input ports A and B, respectively. At a fixed frequency of 13 GHz, φ A =0, by adjusting φ B Phase allows for continuous control of the power distribution ratio: when φ B = When φ is at its maximum, all power is transmitted to port 2; when φ is at its maximum, all power is transmitted to port 2. B = At that time, power is mainly transmitted to port 1; when φ B = At that time, the power is equally distributed between the two output ports.

[0074] Reference Figure 5 This is a physical sample of a topological interferometric power divider provided in this application embodiment, and a schematic diagram of its control performance under different external phase differences. Figure 5 As shown in sub-figure (b), a reconfigurable topological interference power divider fabricated using substrate integration technology is presented. This device consists of a 1mm thick F4B dielectric substrate (relative permittivity 2.65) and 0.035mm thick copper layers on both the top and bottom surfaces. A subwavelength integrated structure perfectly compatible with standard planar circuits is achieved by etching a triple-symmetric triangular aperture array in the top copper layer. Figure 5The physical diagram in sub-diagram (b) shows two ports on the input side (connected to the signal source) and two probe ports on the output side, which are connected to the external test system via SMA connectors.

[0075] like Figure 5 Subfigure (a) shows the output power ratio modulation curve as a function of the phase difference between ports A and B. The measured results (Mea.) are in high agreement with the simulation results (Sim.) and theoretical calculations (Cal.). The power distribution ratio exhibits a clear cosine law variation with the phase difference: when the phase difference is - At that time, energy is mainly transferred to port 2 (e.g., Figure 5 (as shown in sub-figure (c)); while when the phase difference is At that time, the power is equally distributed between the two ports (e.g.) Figure 5 (as shown in sub-figure (d)); when the phase difference is At that time, all energy is transferred to port 1 (e.g., Figure 5 (as shown in sub-figure (e)). This experimental result confirms the feasibility of achieving continuous dynamic reconstruction of interference edge states through external phase adjustment.

[0076] like Figure 5 Subfigures (c) to (e) show the electric field intensity distribution as a function of the input phase at a 13 GHz operating frequency. It can be observed that the topological edge states undergo coherent superposition in the interference region, and their energy flow trajectory changes with the phase difference, thereby achieving precise allocation of the power ratio at the two output ports. This verifies that the topological interferometric power divider possesses robust transmission characteristics and flexible power scheduling capabilities even in a bent path.

[0077] In summary, Appendix Figure 5 Through physical demonstration and multi-dimensional test curves, it was fully verified that the topological interference power divider can utilize the relative phase difference of the input excitation signal to achieve efficient, continuous and predictable reconfiguration and control of the electromagnetic energy flow direction at the output end.

[0078] In some embodiments, when the external phase difference is fixed, the total phase difference Δφ changes monotonically with frequency, achieving frequency-selective power distribution. Experimental results show that within the operating frequency band, the transmission curve agrees well with theoretical predictions and numerical simulations. The inherent material losses (dielectric loss and ohmic loss) only reduce the overall transmission level and do not change the characteristics of the interference-dominated relative topology interferometric power divider.

[0079] Reference Figure 6 The above describes the simulation and measured results of the topological interferometric power divider provided in this application, which achieves power routing through frequency modulation under a fixed external phase difference. Figure 6As shown in subfigure (a), the output power ratios R1 and R2 exhibit an alternating cosine law as they change with the operating frequency. This relationship stems from the direct modulation of the interference phase difference by the frequency. Based on this, the device can achieve drastically different power distribution states at different frequency points (such as 11.96 GHz, 13.00 GHz, and 13.92 GHz), thus enabling dynamic power distribution functionality simply by changing the frequency.

[0080] like Figure 6 Subfigures (c), (d), and (e) show the electric field distribution at different frequencies. At 11.96 GHz, energy is mainly output from port 2 (i.e., the second output port); as the frequency increases to 13.00 GHz, energy is evenly distributed between the two output ports; when the frequency further increases to 13.92 GHz, energy is mainly concentrated at port 1 (i.e., the first output port). This confirms that the field distribution within the coherent interference region can be precisely controlled by changing the frequency, thereby altering the power distribution ratio.

[0081] like Figure 6 Subplot (b) shows the curves of transmission coefficients T1 and T2 as a function of frequency. Within the operating frequency band of approximately 12.5 GHz to 14 GHz, the device maintains high transmission efficiency and good isolation. The measured and simulated results agree well, indicating that while the inherent losses of the material (such as dielectric loss and ohmic loss) reduce the overall transmission level, they do not alter the interference-dominated power routing characteristics, demonstrating the robustness of the topology's edge-state transmission.

[0082] In summary, the appendix Figure 6 The frequency control mechanism of the reconfigurable topological interference power divider was verified by quantitative curves and qualitative field diagrams, proving that it can flexibly schedule electromagnetic energy between different output ports according to the change of operating frequency.

[0083] Furthermore, this application also provides a power control method for a topological interferometric power divider, which is applied to the topological interferometric power divider described above. Based on the above-described topological interferometric power divider, the power control method for the topological interferometric power divider in this application embodiment will be described in detail below. (Refer to...) Figure 7 This is an optional flowchart of the power control method for the topological interference power divider provided in the embodiments of this application. Figure 7 The method may include, but is not limited to, steps 701 to 703. It is also understood that this embodiment... Figure 7 The order of steps 701 to 703 is not specifically limited. The order of steps can be adjusted or some steps can be reduced or added according to actual needs.

[0084] Step 701: Input a first excitation signal through the first input port and input a second excitation signal through the second input port.

[0085] Step 702: Adjust the relative phase difference between the first excitation signal and the second excitation signal to change the field distribution in the coherent interference region.

[0086] Step 703: Adjust the power distribution ratio of the output port according to the change in relative phase difference.

[0087] Steps 701 to 703 are described in detail below.

[0088] In step 701 of some embodiments, a first excitation signal is input through a first input port, and a second excitation signal is input through a second input port. Here, the "first excitation signal" and "second excitation signal" refer to electromagnetic wave energy with specific frequencies, amplitudes, and initial phases, typically generated by an external microwave source. The first and second input ports convert the excitation signals into topology-protected edge-state modes through the aforementioned matching network, and propagate them towards the central region along their respective topological waveguide channel branches. This step completes the energy injection process, laying the physical foundation for subsequent electromagnetic field superposition in the coherent interference region.

[0089] In step 702 of some embodiments, the relative phase difference between the first excitation signal and the second excitation signal is adjusted to change the field distribution within the coherent interference region. Here, "relative phase difference" refers to the leading or lagging relationship between the peaks and troughs of the two excitation signals on a time scale. When two topological edge state signals carrying specific phase relationships enter the coherent interference region, due to the region's unique hexagonal cell arrangement, the electromagnetic fields will undergo vector superposition according to Huygens' principle, thus forming a specific "field distribution," i.e., a spatial pattern of energy density intensity of the interference field. By changing the phase difference through external phase shifters or other control devices, the centroid of the interference field can be guided to physically shift within the central region in real time and continuously.

[0090] In step 703 of some embodiments, the power allocation ratio of the output ports is adjusted according to the change in the relative phase difference. Here, "power allocation ratio" refers to the percentage of electromagnetic energy acquired by each of the two output ports of the topological interferometric power divider relative to the total input energy. As the field distribution within the coherent interference region shifts, the synthesized electromagnetic wave energy selectively couples into the output waveguide branch that better matches its field strength center. For example, when the phase difference is adjusted to a specific angle, the energy may be completely concentrated at the first output port, while as the phase difference continuously changes, the energy gradually transfers to the second output port. This step achieves a direct conversion from the physical quantity of phase difference to the logical allocation of output power, completing the signal routing scheduling process.

[0091] The power control method for the topological interference power divider provided in this application achieves stepless and dynamic control of the output power distribution ratio by precisely regulating the coherent interference logic of the dual-path topological excitation signals. This breaks through the limitation of fixed function of traditional power distribution devices, enabling the topological interference power divider to achieve continuous power reconfiguration between different output ports by simply controlling the phase without changing the hardware physical structure. At the same time, since the transmission path is protected by the topological edge state, this power regulation process has extremely high robustness, effectively solving the technical pain points of poor signal scheduling flexibility, high loss, and difficulty in real-time reconfiguration in complex integrated circuits.

[0092] This application also provides an electronic device, including: At least one memory; At least one processor; At least one program; The program is stored in a memory, and the processor executes the at least one program to implement the power control method of the topological interference power divider described above in this application. The electronic device can be any smart terminal, including mobile phones, tablets, personal digital assistants (PDAs), and in-vehicle computers.

[0093] Please see Figure 8 , Figure 8 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes: The processor 801 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 802 can be implemented in the form of ROM (Read-Only Memory), static storage device, dynamic storage device, or RAM (Random Access Memory). The memory 802 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 802 and is called and executed by the processor 801 to execute the power control method of the topological interference power divider of the embodiments of this application. The 803 input / output interface is used to implement information input and output. The communication interface 804 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 805 transmits information between various components of the device (e.g., processor 801, memory 802, input / output interface 803, and communication interface 804); The processor 801, memory 802, input / output interface 803, and communication interface 804 are connected to each other within the device via bus 805.

[0094] This application embodiment also provides a storage medium, which is a computer-readable storage medium, storing a computer program that, when executed by a processor, implements the power control method of the above-described topological interference power divider.

[0095] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0096] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0097] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0098] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0099] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0100] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0101] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0102] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. The coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, or indirect coupling or communication connection between the apparatus or units, and may be electrical, mechanical, or other forms.

[0103] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0104] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0105] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0106] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A topological interferometric power divider, characterized in that, include: Dielectric substrate; Upper copper layer and lower copper layer disposed on the surface of the dielectric substrate; The valley photonic crystal structure is composed of triple-symmetric apertures of a periodic triangular lattice etched on the upper copper layer; the valley photonic crystal structure includes alternating A-type unit cells and B-type unit cells, and the rotation angle of the A-type unit cells is opposite to that of the B-type unit cells; The topological waveguide channel is a domain wall formed at the interface between the type A unit cell and the type B unit cell. The topological waveguide channel includes multiple branches that converge in the central region to form a coherent interference region. The input port and the output port are respectively located at the beginning and end of the topological waveguide channel; Matching networks are provided between the input port, the output port and the topological waveguide channel. The matching networks are used to realize the conversion between conventional waveguide modes and topological edge states, and to transmit or extract signals to the coherent interference region. In single-port excitation mode, by adjusting the valley photonic crystal structure parameters of the coherent interference region, all output ports output equal power; In dual-port excitation mode, the output power distribution ratio, center operating frequency, or transmission bandwidth of the topological interference power divider can be modulated by adjusting the phase or interference conditions of the topological edge states within the coherent interference region.

2. The topological interference power divider according to claim 1, characterized in that, The matching network includes a tapered bridge and a triangular transition section connecting the tapered bridge and the topological waveguide channel.

3. The topological interference power divider according to claim 2, characterized in that, The edge profile curve of the tapered bridge evolves exponentially along the signal transmission direction. The width of the triangular transition section gradually narrows from the tapered bridge toward the topological waveguide channel. The edge profile curve has a first width at the end connected to the input port and a second width at the end connected to the triangular transition section, and the second width is smaller than the first width.

4. The topological interference power divider according to claim 1, characterized in that, The triple symmetrical aperture is an equilateral triangle aperture, the rotation angle corresponding to the type A unit cell is a first angle, and the rotation angle corresponding to the type B unit cell is a negative of the first angle.

5. The topological interference power divider according to claim 1, characterized in that, The topological waveguide channel includes at least one zigzag path with a 120-degree bend angle.

6. The topological interference power divider according to claim 1, characterized in that, The topological waveguide channel is also provided with a physical adjustment component, which is a metal rectangular strip disposed at the domain wall. The metal rectangular strip is located at the splicing gap between the type A unit cell and the type B unit cell.

7. The topological interference power divider according to claim 6, characterized in that, The width of the metal rectangular strip is determined according to a preset center operating frequency, and the projection of the metal rectangular strip on the upper copper layer covers a portion of the domain wall area.

8. The topological interference power divider according to claim 1, characterized in that, The central region is formed by the A-type unit cells and the B-type unit cells arranged symmetrically at the geometric center.

9. The topological interference power divider according to claim 1, characterized in that, The input port includes a first input terminal and a second input terminal, and the first input terminal and the second input terminal are respectively connected to the coherent interference region through the matching network.

10. A power control method for a topological interference power divider, characterized in that, The topological interferometric power divider is as described in claim 1, and the method includes: A first excitation signal is input through the first input port, and a second excitation signal is input through the second input port; Adjusting the relative phase difference between the first excitation signal and the second excitation signal to change the field distribution within the coherent interference region; The power distribution ratio of the output port is adjusted according to the change in the relative phase difference.

11. An electronic device, characterized in that, It includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the power control method of the topological interference power divider according to claim 10.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the power control method for the topological interference power divider as described in claim 10.

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