Power dividing circuit and feed network

Abstract

The utility model relates to a power dividing circuit and a feed network. The power dividing circuit comprises a plurality of power dividers, wherein each power divider comprises a main port and at least two branch ports; the plurality of power dividers comprise a first power divider, a second power divider and a third power divider, a main port of the first power divider is used as an input port of the power dividing circuit, a main port of the second power divider is used as another input port of the power dividing circuit, a first branch port of the third power divider is connected with a second branch port of the first power divider, and a second branch port of the third power divider is connected with a second branch port of the second power divider. And the second branch port of the third power divider is connected with the second branch port of the second power divider, so that the isolation degree between the main port of the first power divider and the main port of the second power divider is kept within a preset range. Through the combination mode of the power dividers, the isolation degree between the main ports of the first power divider and the second power divider can be kept within a preset range, the condition of a more accurate antenna array can be simulated, and the requirement for simulating antenna array coupling is met.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to a power divider circuit and a feed network. Background Technology

[0002] With the development of communication technology, massive MIMO (Massively Multi-Size Antenna) technology has become a key means to improve spectral efficiency, enhance signal coverage, and improve communication quality. By deploying a large number of antenna elements on base stations or terminal equipment, massive MIMO enables spatial multiplexing, significantly increasing system capacity and data transmission rates. The realization of massive MIMO technology depends on the precise design of the antenna array; therefore, it is necessary to simulate the characteristics of the antenna array, especially the isolation and coupling between antenna elements, from the initial design stage.

[0003] In related technologies, the characteristics of antenna arrays are simulated by designing a feeding network.

[0004] However, the feed network designed in the related technology does not accurately simulate the antenna array. Utility Model Content

[0005] Therefore, it is necessary to provide a power divider circuit that can more accurately simulate the characteristics of an antenna array to address the aforementioned technical problems.

[0006] In a first aspect, this application provides a power divider circuit method, comprising: a plurality of power dividers, each power divider including a main port and at least two branch ports; the plurality of power dividers including a first power divider, a second power divider, and a third power divider, wherein the main port of the first power divider serves as an input port of the power divider circuit, and the first branch port of the first power divider serves as an output port of the power divider circuit; the main port of the second power divider serves as another input port of the power divider circuit, and the first branch port of the second power divider serves as another output port of the power divider circuit; the first branch port of the third power divider is connected to the second branch port of the first power divider, and the second branch port of the third power divider is connected to the second branch port of the second power divider, so that the isolation between the main port of the first power divider and the main port of the second power divider is maintained within a preset range.

[0007] In one embodiment, all power dividers are of the first type, and a preset resistor is provided between the first branch port and the second branch port of the first type of power divider.

[0008] In one embodiment, the first type of power divider further includes a first coupling stub and a second coupling stub, wherein a first end of the first coupling stub is connected to a first branch port of the first type of power divider, and a second end of the first coupling stub is connected to a first end of the preset resistor; a first end of the second coupling stub is connected to a second branch port of the first type of power divider, and a second end of the second coupling stub is connected to a second end of the preset resistor, wherein the coupling degree between the first coupling stub and the second coupling stub is a preset value.

[0009] In one embodiment, the power of the first signal at the main port of the first type of power divider is the sum of the power of the second signal at the first branch port and the power of the third signal at the second branch port, and the power of the second signal and the power of the third signal are equal.

[0010] In one embodiment, the resistance value of the preset resistor is twice the characteristic impedance value between the main port and the target branch port of the first type of power divider, wherein the target branch port is one of the first branch port and the second branch port.

[0011] In one embodiment, every two power dividers are connected by an ohmic strip.

[0012] In one embodiment, the resistance value of the ohmic strip is matched to the impedance of any port of the power divider.

[0013] Secondly, this application provides a power supply network, including a power supply unit, the power supply unit including a plurality of the aforementioned power divider circuits and a fourth power divider, wherein the fourth power divider includes a main port and at least two branch ports, the first branch port of the fourth power divider is connected to the main port of the third power divider of the first power divider circuit, and the second branch port of the fourth power divider is connected to the main port of the third power divider of the second power divider circuit.

[0014] In one embodiment, the power supply network includes a plurality of the aforementioned power supply units and a fifth power divider, wherein the fifth power divider includes a main port and at least two branch ports, the first branch port of the fifth power divider is connected to the main port of the fourth power divider of the first power supply unit, and the second branch port of the fifth power divider is connected to the main port of the fourth power divider of the second power supply unit. The first, second, third, and fourth power dividers are all first-type power dividers, and a preset resistor is provided between the first and second branch ports of the first-type power divider. The fifth power divider is a second-type power divider, and no preset resistor is provided between the first and second branch ports of the second-type power divider.

[0015] In one embodiment, the second type of power divider further includes a third coupling stub and a fourth coupling stub, wherein a first end of the third coupling stub is connected to a first branch port of the second type of power divider, and a second end of the third coupling stub is connected to a main port of the second type of power divider; a first end of the fourth coupling stub is connected to a second branch port of the second type of power divider, and a second end of the fourth coupling stub is connected to a main port of the second type of power divider.

[0016] The aforementioned power divider circuit, by setting up multiple power dividers including a first power divider, a second power divider, and a third power divider, enables the distribution of signal power between the main port and at least two branch ports. This provides a certain degree of signal isolation between the main port and branch ports of the power divider, as well as between the two branch ports. By designing the two branch ports of the third power divider to connect to one branch port of each of the first and second power dividers, this connection method allows for the redistribution of signals not allocated by the first and second power dividers. These signals can then be integrated or further distributed through the main port of the third power divider, thereby optimizing the signal transmission path and adjusting the isolation between ports. This power divider combination allows for flexible signal distribution and adjustment of the isolation between different input ports, ensuring that the isolation between the main ports of the first and second power dividers remains within a preset range. This preset range can meet the actual technical requirements of the antenna array, thus simulating a more accurate antenna array and fulfilling the requirements for simulated antenna array coupling. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the power divider circuit in one embodiment;

[0019] Figure 2 This is a schematic diagram of the circuit structure of the power divider circuit in one embodiment;

[0020] Figure 3 This is a schematic diagram of the structure of a first type of power divider in one embodiment;

[0021] Figure 4 This is a schematic diagram of the power supply network in one embodiment;

[0022] Figure 5 This is a schematic diagram of the power supply network in another embodiment;

[0023] Figure 6 This is a schematic diagram of the structure of a second type of power divider in one embodiment;

[0024] Figure 7 This is a schematic diagram of the power supply network in another embodiment.

[0025] Explanation of reference numerals in the attached figures:

[0026] 11-First power divider, 12-Second power divider, 13-Third power divider, A-Main port, B-Branch port, 21-First coupling stub, 22-Second coupling stub, 100-Power divider circuit, 14-Fourth power divider, 200-Feeder unit, 15-Fifth power divider, 23-Third coupling stub, 24-Fourth coupling stub. Detailed Implementation

[0027] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0028] 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 particular embodiments only and is not intended to be limiting of the application.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0032] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0033] As described in the background section, existing power divider circuits suffer from inaccurate simulations of antenna arrays. The inventors discovered that this problem stems from two common design approaches for existing feed networks. One approach directly connects the input and output of the feed network via ohmic wires, neglecting the coupling effects and isolation requirements of the antenna array. While simple, this approach completely ignores the complex interactions of signals within the antenna array, leading to increased interference and decreased isolation as the number of antenna elements increases, thus impacting overall system performance. The other approach uses coupling lines to simulate the coupling force of the antenna array. A coupling line is added between the input and output of the feed network, simulating the coupling through line-to-line coupling. This design can achieve antenna coupling to some extent, but for large-scale antenna arrays, especially when array size increases, antenna spacing decreases, or the number of antenna elements increases significantly, it is difficult to accurately control and simulate the isolation of the entire array using only coupling lines. This is because the coupling effect of the coupling line is affected by line length, spacing, and dielectric properties, which become extremely complex in large-scale arrays, making it difficult to meet the isolation requirements between all antenna elements using a simple coupling line design.

[0034] For the reasons mentioned above, this invention provides a power divider circuit that can more accurately simulate the characteristics of an antenna array.

[0035] In one embodiment, such as Figure 1 As shown, the power divider circuit includes multiple power dividers, each of which includes a main port A and at least two branch ports B. The multiple power dividers include a first power divider 11, a second power divider 12, and a third power divider 13, wherein...

[0036] The main port A of the first power divider 11 serves as an input port of the power divider circuit, and the first branch port B of the first power divider 11 serves as an output port of the power divider circuit.

[0037] Each power divider has a main port A, used to receive input signals or send signals to other parts of the circuit. At least two branch ports B are used to equally distribute the signal power received at main port A, or to combine the signals received at two branch ports B before transmitting them to main port A for output. This ensures that the power divider circuit can redistribute signals.

[0038] In this design, the main port A of the first power divider 11 serves as an input port, capable of receiving signals from external sources, while the first branch port B is used to output the divided signals to other parts of the circuit or external loads. This design ensures the initial distribution and isolation of signals.

[0039] The main port A of the second power divider 12 serves as another input port of the power divider circuit, and the first branch port B of the second power divider 12 serves as another output port of the power divider circuit.

[0040] In this circuit, the main port A of the second power divider 12 can be used as another input port to receive another independent signal input, while the first branch port B is used to output the distributed signal. This allows the circuit to process multiple input signals simultaneously, increasing the system's flexibility and multiplexing capability.

[0041] The first branch port B of the third power divider 13 is connected to the second branch port B of the first power divider 11, and the second branch port B of the third power divider 13 is connected to the second branch port B of the second power divider 12, so that the isolation between the main port A of the first power divider 11 and the main port A of the second power divider 12 is kept within a preset range.

[0042] Specifically, the two branch ports B of the third power divider 13 are connected to the unused branch ports B of the first power divider 11 and the second power divider 12, respectively. This allows the unallocated signals from the first power divider 11 and the second power divider 12 to be redistributed and integrated or further distributed through the main port A of the third power divider 13, thereby optimizing the signal transmission path and improving isolation.

[0043] For example, such as Figure 2 The diagram shown is a circuit structure diagram of the power divider circuit. By connecting the third power divider 13, the isolation between the main ports A of the first power divider 11 and the second power divider 12 can be significantly improved, maintaining the isolation within a preset range, for example, between -20dB and -30dB, which matches the technical requirements of the antenna array. Please continue to refer to... Figure 2 The isolation between the main port A and branch port B of the first power divider 11, the second power divider 12, and the third power divider 13 is -3dB, while the isolation between the two branch ports B of the same power divider is -20dB. Figure 2 The connection shown makes the isolation between the main ports A of the first power divider 11 and the second power divider 12 -20dB + (2*-3dB) = -26dB, while the isolation required for the analog antenna is in the range of -20dB to -30dB, so the requirements of the analog antenna are met.

[0044] It's important to note that antenna simulation is necessary because in an array antenna, multiple antenna elements are closely arranged, resulting in electromagnetic coupling. This means that the signal from one antenna element can partially affect other elements, typically leading to signal energy loss (coupling loss) and mutual interference (coupling force). To better understand and control these effects in a laboratory environment or during the design process, engineers construct a feed network that simulates the coupling effects of a real array antenna in terms of electrical characteristics. Antenna arrays require a certain degree of isolation between elements to reduce signal interference, but complete isolation cannot compromise the overall array performance. By simulating coupling, the feed network allows for a balance between isolation and coupling strength during the design phase, ensuring optimal performance of the antenna array in actual operation.

[0045] Calibration and Prediction: Accurate simulation of coupling conditions during antenna array design and calibration can provide more realistic system predictions. This helps optimize system performance based on simulation results before actual deployment, reducing time and cost during debugging and optimization.

[0046] Adapting to Real-World Environments: Real-world antenna arrays are affected by their surrounding environment and installation location, resulting in additional coupling. If coupling simulation is not considered in the feed network design, the performance of the actual antenna array may differ significantly from expectations. By simulating coupling, the feed network can more realistically reflect the behavior of the antenna array in complex environments, thereby improving the system's robustness and adaptability.

[0047] In this embodiment, by setting up multiple power dividers, including a first power divider, a second power divider, and a third power divider, the power dividers can distribute the signal power between the main port and at least two branch ports. This ensures a certain degree of signal isolation between the main port and the branch ports of the power divider, as well as between the two branch ports. By designing the two branch ports of the third power divider to connect to one branch port of each of the first and second power dividers, this connection method can redistribute the unallocated signals from the first and second power dividers and integrate or further distribute them through the main port of the third power divider. This optimizes the signal transmission path and adjusts the isolation between ports. Through this power divider combination, signal distribution can be flexibly performed, and the isolation between different input ports can be adjusted, keeping the isolation between the main ports of the first and second power dividers within a preset range. This preset range can meet the actual technical requirements of the antenna array, thus simulating a more accurate antenna array situation and meeting the requirements of simulated antenna array coupling.

[0048] In one embodiment, such as Figure 3As shown, it includes: multiple power dividers, all of which are first-type power dividers, and a preset resistor R is provided between the first branch port B1 and the second branch port B2 of the first-type power divider.

[0049] In the first type of power divider, the resistor settings in the Wilkinson Power Divider are a key part of its unique design, primarily aimed at achieving equal power distribution and isolation between ports. Specifically, the resistors in the Wilkinson Power Divider serve the following functions:

[0050] Power Sharing: In a Wilkinson power divider, when a signal enters from the input port, it is divided into two equal parts, which are then transmitted to the two output ports respectively. During this process, the resistor settings ensure equal power distribution. Specifically, a resistor with twice the characteristic impedance (2Z0) is typically placed between the two output ports to ensure that the input power is evenly distributed between the two output ports while maintaining low reflection and mismatch losses.

[0051] Improving Isolation: A key feature of Wilkinson power dividers is their ability to provide excellent port isolation, meaning that a signal at one output port will not affect another. Resistor placement is crucial for achieving this. When a signal encounters mismatch or load change at one of the output ports, it is reflected back into the divider. By using resistors placed between the output ports, the reflected signal is made 180 degrees out of phase with the original signal, thus canceling each other out at the input port, maintaining isolation between the output ports, and reducing signal interference.

[0052] Impedance matching: The setting of resistors can also help achieve impedance matching in a circuit. In Wilkinson power dividers, the value of the resistor is usually designed to match the characteristic impedance of the transmission line to reduce signal reflection and improve power transmission efficiency.

[0053] Reduced reflection loss: Through precisely designed resistors, Wilkinson power dividers can minimize reflection loss, which is crucial for applications requiring high power distribution efficiency and low signal distortion.

[0054] For example, the preset resistor R is twice the characteristic impedance between the main port A and the target branch port B of the first type of power divider, where the target branch port is one of the first branch port B1 and the second branch port B2. For instance, the preset resistor R could be 100 ohms. This design is based on a Wilkinson power divider with an input impedance of 50 ohms. To achieve the above functionality, the power divider design sets a resistance of twice the characteristic impedance, i.e., 100 ohms, between the output ports to ensure uniform power distribution, good isolation, impedance matching, and low reflection loss. This design makes Wilkinson power dividers ideal for power distribution and signal isolation in RF and microwave systems.

[0055] In this embodiment, by designing multiple power dividers as first-type power dividers, the isolation between ports can be adjusted so that the isolation meets the requirements of antenna simulation.

[0056] In one embodiment, please see [link to previous article]. Figure 3 The first type of power divider also includes a first coupling branch 21 and a second coupling branch 22, wherein,

[0057] The first end of the first coupling branch 21 is connected to the first branch port B1 of the first type of power divider, and the second end of the first coupling branch 21 is connected to the first end of the preset resistor R.

[0058] The first end of the second coupling branch 22 is connected to the second branch port B2 of the first type of power divider, and the second end of the second coupling branch 22 is connected to the second end of the preset resistor R.

[0059] The coupling degree between the first coupling branch 21 and the second coupling branch 22 is a preset value.

[0060] Specifically, in RF and microwave engineering, especially in the design of power dividers and couplers, a coupling section refers to the part used to control and adjust the degree of coupling between different signal paths in a circuit. The purpose of a coupling section is to achieve specific interactions between signals at different ports or paths, such as simulating the coupling effect of an antenna array in a power divider network. Since the power divider circuit in this application is designed to simulate antenna isolation and coupling, the antenna requires these isolation levels to be in the range of -20dB to -30dB. Without a coupling section, the isolation between the two branch ports of a Wilkinson power divider is approximately -27dB. Adding a coupling section increases the isolation to approximately -20dB. Through the combination of power dividers, the isolation between the two input ports can be maintained within a preset range (approximately -26dB).

[0061] In this embodiment, by designing the first and second coupling stubs, the isolation and coupling between different input ports in the power divider circuit can be adjusted to more closely approximate the requirements of an actual antenna array, thereby improving the simulation accuracy and performance of the entire system. Adjusting the coupling stubs allows the coupling and isolation between ports in the network to reach the expected design goals, which is crucial for simulating large-scale antenna arrays.

[0062] In one embodiment, the power of the first signal at the main port of the first type of power divider is the sum of the power of the second signal at the first branch port and the power of the third signal at the second branch port, and the power of the second signal and the power of the third signal are equal.

[0063] The first type of power divider is a 1-to-2 power divider. An array network composed of multiple 1-to-2 power dividers is constructed to simulate the coupling force and coupling loss between signals in a large-scale array antenna, ensuring that all ports have the same phase and highly consistent loss. This 1-to-2 power divider has the following characteristics and objectives:

[0064] Electrical simulation: By reasonably designing the parameters of the power divider (such as matching resistors, transmission line length, etc.), the signal transmission characteristics (including phase, power distribution, isolation and coupling strength) between ports in the network are matched with the actual coupling characteristics between antenna elements in a large-scale array antenna.

[0065] Coupling loss simulation: The layout and component selection of the power divider array network can simulate the loss of signal energy in the array antenna due to coupling during transmission, which helps to evaluate and optimize the overall efficiency of the antenna system.

[0066] Coupler force simulation: By adjusting the specific coupling structure and parameters between power dividers, the network can reflect the interaction strength between the signals of each element in the array antenna. This is crucial for analyzing and designing parameters such as the arrangement, spacing, and polarization of the array antenna.

[0067] Consistency and Isolation: In order to better simulate the antenna array, the network design ensures that the phase and loss of all ports are highly consistent, and the isolation and coupling strength between all ports are controlled within an ideal range to meet the requirements of the antenna system for signal isolation and coupling strength.

[0068] In this embodiment, by designing a 1-to-2 power divider array network, a model with electrical characteristics similar to a large-scale array antenna can be created for performance evaluation, optimization, and verification before actual deployment. This is of great significance for the design and research of antenna systems.

[0069] In one embodiment, please see [link to previous article]. Figure 2Each pair of power dividers is connected by an ohmic strip 30.

[0070] The resistance value of the ohmic strip 30 is matched to the impedance of any port of the power divider. Impedance matching aims to maximize signal transmission efficiency, reduce signal reflection and loss during transmission, thereby ensuring signal integrity and circuit performance. The resistance value of the ohmic strip 30 can be set to 50 ohms, the same as the port impedance of the power divider.

[0071] In this embodiment, the introduction of ohmic strips can achieve a stable connection between power dividers, which is suitable for communication equipment that requires stable signal transmission, such as radio frequency front-ends, thereby improving the reliability of signal transmission and the stability of the system.

[0072] In one embodiment, such as Figure 4 As shown, a power supply network is provided, including a power supply unit, which includes multiple power divider circuits 100 as described in any of the above embodiments, and a fourth power divider 14, wherein...

[0073] The fourth power divider 14 includes a main port and at least two branch ports. The first branch port of the fourth power divider 14 is connected to the main port of the third power divider 13 of the first power divider circuit 100, and the second branch port of the fourth power divider 14 is connected to the main port of the third power divider 13 of the second power divider circuit 100.

[0074] For example, the isolation between the main port and the branch port of a single power divider is -3dB, while the isolation between the two branch ports of the same power divider is -20dB. After the two first power divider circuits 100 are combined by the fourth power divider 14, the isolation between the input ports (A1 and A2) of different first power divider circuits 100 can also be kept within the preset range, realizing a larger-scale antenna simulation.

[0075] In this embodiment, multiple power divider circuits are connected together by a four-power divider to obtain a feed unit, thereby expanding the power divider circuit and enabling the simulation of a larger-scale antenna array.

[0076] In one embodiment, such as Figure 5 As shown, the power supply network includes multiple power supply units 200 and a fifth power divider 15, wherein,

[0077] The fifth power divider 15 includes one main port and at least two branch ports. The first branch port of the fifth power divider 15 is connected to the main port of the fourth power divider 14 of the first power supply unit 200, and the second branch port of the fifth power divider 15 is connected to the main port of the fourth power divider 14 of the second power supply unit 200.

[0078] The first power divider 11, the second power divider 12, the third power divider 13, and the fourth power divider 14 are all first-type power dividers. A preset resistor is provided between the first branch port and the second branch port of the first-type power divider. The fifth power divider 15 is a second-type power divider. No preset resistor is provided between the first branch port and the second branch port of the second-type power divider.

[0079] For example, the second type of power divider is as follows: Figure 6 As shown, the fifth power divider 15 is a second-type power divider. Unlike the first-type power divider, the second-type power divider does not have a preset resistor between its first and second branch ports. This design choice is based on the optimization requirements of the overall circuit layout and signal transmission path, perhaps to achieve more flexible signal distribution, or because a lower signal isolation is needed in a specific signal path to meet specific coupling requirements. For example, the isolation between the two branch ports of the second-type power divider can be -5dB to -6dB.

[0080] For example, the power supply network can be further expanded through different combinations of the fifth power divider, such as... Figure 7 As shown, further extensions and combinations are possible, and the principle is the same as described above, so they will not be repeated here.

[0081] In this embodiment, by designing a fifth power divider, the signal can be flexibly distributed between two different feed units, enhancing the adaptability and flexibility of the circuit and enabling the simulation of larger-scale antenna arrays. The combined use of the first and second types of power dividers allows for isolation control under different coupling requirements. In paths requiring high isolation, the first type of power divider plays a crucial role, while in paths requiring lower isolation, the second type of power divider provides more flexible signal processing.

[0082] In one embodiment, please see [link to previous article]. Figure 6 The second type of power divider also includes a third coupling branch 23 and a fourth coupling branch 24, wherein,

[0083] The first end of the third coupling branch 23 is connected to the first branch port B3 of the second type of power divider, and the second end of the third coupling branch 23 is connected to the main port A3 of the second type of power divider.

[0084] The first end of the fourth coupling branch 24 is connected to the second branch port B4 of the second type of power divider, and the second end of the fourth coupling branch 24 is connected to the main port A3 of the second type of power divider.

[0085] In this embodiment, by designing the third and fourth coupling stubs, the isolation and coupling between different input ports in the feed network can be adjusted to more closely approximate the requirements of an actual antenna array, thereby improving the simulation accuracy and performance of the entire system. Adjusting the coupling stubs allows the coupling and isolation between ports in the network to reach the expected design goals, which is crucial for simulating large-scale antenna arrays.

[0086] In the description of this specification, references to terms such as "some embodiments," "other embodiments," and "ideal embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A power divider circuit, characterized in that, The system includes multiple power dividers, each of which includes one main port and at least two branch ports; the power dividers include a first power divider, a second power divider, and a third power divider, wherein... The main port of the first power divider serves as an input port of the power divider circuit, and the first branch port of the first power divider serves as an output port of the power divider circuit. The main port of the second power divider serves as another input port of the power divider circuit, and the first branch port of the second power divider serves as another output port of the power divider circuit. The first branch port of the third power divider is connected to the second branch port of the first power divider, and the second branch port of the third power divider is connected to the second branch port of the second power divider, so that the isolation between the main port of the first power divider and the main port of the second power divider is kept within a preset range.

2. The power divider circuit according to claim 1, characterized in that, All of the power dividers are of the first type, and a preset resistor is provided between the first branch port and the second branch port of the first type of power divider.

3. The power divider circuit according to claim 2, characterized in that, The first type of power divider further includes a first coupling stub and a second coupling stub, wherein, The first end of the first coupling stub is connected to the first branch port of the first type of power divider, and the second end of the first coupling stub is connected to the first end of the preset resistor. The first end of the second coupling stub is connected to the second branch port of the first type of power divider, and the second end of the second coupling stub is connected to the second end of the preset resistor, wherein the coupling degree between the first coupling stub and the second coupling stub is a preset value.

4. The power divider circuit according to claim 2, characterized in that, The power of the first signal at the main port of the first type of power divider is the sum of the power of the second signal at the first branch port and the power of the third signal at the second branch port, and the power of the second signal and the power of the third signal are equal.

5. The power divider circuit according to claim 4, characterized in that, The resistance value of the preset resistor is twice the characteristic impedance value between the main port and the target branch port of the first type of power divider, wherein the target branch port is one of the first branch port and the second branch port.

6. The power divider circuit according to any one of claims 1 to 5, characterized in that, Each pair of power dividers is connected by an ohmic strip.

7. The power divider circuit according to claim 6, characterized in that, The resistance value of the ohmic strip is matched to the impedance of any port of the power divider.

8. A power supply network, characterized in that, The power supply unit includes a plurality of power divider circuits as described in any one of claims 1-7, and a fourth power divider, wherein, The fourth power divider includes a main port and at least two branch ports. The first branch port of the fourth power divider is connected to the main port of the third power divider of the first power divider circuit, and the second branch port of the fourth power divider is connected to the main port of the third power divider of the second power divider circuit.

9. The power supply network according to claim 8, characterized in that, Includes multiple power supply units and a fifth power divider, wherein, The fifth power divider includes one main port and at least two branch ports. The first branch port of the fifth power divider is connected to the main port of the fourth power divider of the first power supply unit, and the second branch port of the fifth power divider is connected to the main port of the fourth power divider of the second power supply unit. The first, second, third, and fourth power dividers are all first-type power dividers, and a preset resistor is provided between the first branch port and the second branch port of the first-type power divider. The fifth power divider is a second-type power divider, and no preset resistor is provided between the first branch port and the second branch port of the second-type power divider.

10. The power supply network according to claim 9, characterized in that, The second type of power divider also includes a third coupling stub and a fourth coupling stub, wherein, The first end of the third coupling stub is connected to the first branch port of the second type of power divider, and the second end of the third coupling stub is connected to the main port of the second type of power divider. The first end of the fourth coupling branch is connected to the second branch port of the second type of power divider, and the second end of the fourth coupling branch is connected to the main port of the second type of power divider.

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