Multi-channel array feed system switch combining combination structure

Abstract

The invention relates to the technical field of radio frequency signal transmission, in particular to a multi-channel array feed system switch combination structure, and aims to solve the problems that the structural reliability of a single-stage combiner is reduced and the signal synthesis performance is unstable due to tolerance accumulation. The switch combining combination structure of the multichannel array feed system comprises a switch and a plurality of combiners, and further comprises a plurality of SMP connectors, a plurality of output channels are arranged on the switch; the output channels, the SMP connectors and the combiners are arranged in multiple groups along the circumferential direction of the switch; in each group, the output channel is connected with one end of the combiner through an SMP connector. According to the invention, the influence caused by the tolerance of the combiner is effectively reduced, and the reliability of the structure and the quality of signal synthesis are enhanced.

Description

Technical Field

[0001] This document relates to the field of radio frequency signal transmission technology, and in particular to a switch combination structure of a multi-channel array feeding system. Background Art

[0002] The array feeding system is usually used in the semi-physical simulation system of the microwave darkroom. The target echo signal produced by the target simulator is fed into the antenna unit for radiation to simulate the spatial angular position of the target and environmental signals. During the experiment, it is usually necessary to synthesize the RF signals of multiple different channels and feed them into the same antenna unit to simulate the target. The structure of the combiner unit greatly affects the performance and complexity of the system.

[0003] In the prior art, the signal synthesis method for the multi-channel array feeding system is generally: directly use a one-stage X-to-one combiner, and use SMA connection to connect the switch and the combiner. When the number of input channels of the combiner is small, the consistency and tolerance of the combiner have little impact on the system. However, when the number of channels is more than 6, the single-stage combiner can no longer meet the impact of tolerance on structural reliability during signal synthesis.

[0004] Therefore, it is necessary to provide a multi-channel array feeding system switch combining structure to meet the demand for multi-channel signal synthesis in the field. Summary of the invention

[0005] The present specification provides a switch combining structure of a multi-channel array feeding system, which is used to solve the problem of reduced structural reliability and unstable signal synthesis performance of a single-stage combiner due to tolerance accumulation.

[0006] The present invention proposes a multi-channel array feed system switch combining structure, comprising a switch and a plurality of combiners, wherein the multi-channel array feed system switch combining structure further comprises M*N SMP connectors;

[0007] The switch is provided with M*N output channels;

[0008] The M output channels, the M SMP connectors and the combiners are arranged in N groups along the circumferential direction of the switch;

[0009] In each group, the M output channels are respectively connected to one end of the combiner through the M SMP connectors in one-to-one correspondence, N is the number of groups of output channels, and M is the number of output channels in each group.

[0010] Furthermore, the switch is a final stage switch in an array feed matrix.

[0011] Furthermore, the other end of the combiner is connected to the antenna unit into which the RF signal is fed through an SMP connector.

[0012] Furthermore, the number M of the output channels in each group is at least 5.

[0013] Furthermore, the switch and the combiner are fixed on a tray.

[0014] Furthermore, in the same group, a line connecting the midpoints of the M SMP connectors is parallel to the axial direction of the switch.

[0015] Further, the M output channels are respectively connected to one end of the combiner through the M SMP connectors corresponding to each other, specifically:

[0016] M signal receiving channels are provided on one end of the combiner, and each signal receiving channel is connected to an SMP connector.

[0017] Furthermore, the number of the output channels is the same as the number of the signal receiving channels, and their positions correspond one to one.

[0018] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0019] Structural design: The switch and combiner are connected through SMP connectors instead of traditional SMA connectors. SMP connectors have smaller size and better high-frequency characteristics, suitable for high-density wiring and high-frequency band applications.

[0020] Multiple groups of output channels, SMP connectors and combiners are arranged along the circumference of the switch, ensuring the compactness and scalability of the system.

[0021] The final switch is directly connected to the combiner, which reduces unnecessary intermediate links and improves signal transmission efficiency.

[0022] The other end of the combiner is connected to the antenna unit via an SMP connector, ensuring efficient signal transmission from the switch to the antenna.

[0023] Installation method: The switch and combiner are fixed on a tray. This installation method not only simplifies the assembly process, but also shortens the length of the connecting cables between the components, thereby reducing insertion loss and improving the overall stability of the system.

[0024] Channel configuration: The number of output channels is at least 5, which meets the needs of multi-channel signal synthesis.

[0025] Each output channel has the same number and one-to-one correspondence with the signal receiving channels on the combiner, ensuring the consistency and accuracy of signal synthesis.

[0026] Technical advantages: Using SMP connectors instead of traditional SMA connectors effectively reduces the impact of combiner tolerance and enhances structural reliability and signal synthesis quality.

[0027] The tray-type installation structure helps to reduce the length of connecting cables, further reducing insertion loss, while providing good electromagnetic shielding, maintaining low loss and high stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 A schematic diagram of the external structure of a switch combination structure of a multi-channel array feeding system provided in an embodiment of this specification;

[0030] Figure 2 A schematic diagram of the internal structure of a switch combination structure of a multi-channel array feeding system provided in one embodiment of the present specification. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0032] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0033] like Figure 1-Figure 2 As shown, the present invention provides a multi-channel array feed system switch combining structure, including a switch 1 and a plurality of combiners 2, and the multi-channel array feed system switch combining structure also includes M*N SMP connectors 3;

[0034] The switch 1 is provided with M*N output channels;

[0035] The M output channels, the M SMP connectors 3 and the combiners 2 are arranged in N groups along the circumferential direction of the switch 1;

[0036] In each group, the M output channels are respectively connected to one end of the combiner 2 through the M SMP connectors 3 in one-to-one correspondence, N is the number of groups of output channels, and M is the number of output channels in each group.

[0037] The switch 1 is the final switch in the array feed matrix. The final switch is usually a one-to-five switch, which divides the signal of one channel into five paths respectively. The combiner 2 can be selected in different models according to needs.

[0038] Among them, compared with the SMA connector, the advantage of the SMP connector 3 is that it has small requirements on device tolerance while ensuring that device signals are not leaked, and can realize multi-channel combining.

[0039] Among them, the SMP (SubMiniature Push-on) connector is a type of connector used for RF and microwave applications. The SMA (SubMiniature Version A) connector is a widely used type of RF connector.

[0040] As a further explanation of the present invention, the other end of the combiner 2 is connected to the antenna unit fed with the radio frequency signal through the SMP connector 3 .

[0041] In the present invention, the output channels, SMP connectors 3 and combiners 2 on the switch 1 are evenly distributed along the circumference of the switch to form multiple groups of similar structures. This layout helps to simplify wiring, reduce electromagnetic interference, and improve the overall performance of the system. Each group of such structures represents an independent working unit, which work together to support the operation of the entire array.

[0042] When the system is working, the signal first reaches switch 1, and selects the appropriate output channel for forwarding according to the preset rules. Then, it passes through SMP connector 3 and enters combiner 2, where all selected signals are combined. Finally, the combined signal is passed to the antenna unit through another SMP connector 3, completing the signal transmission process.

[0043] The number M of the output channels in each group is at least 5.

[0044] The switch 1 and the combiner 2 are fixed on a tray 4 .

[0045] The tray 4 is made of a lightweight but strong material, such as aluminum alloy or reinforced plastic, to ensure sufficient mechanical strength while reducing the overall weight. The length, width and height of the tray 4 are accurately calculated based on the actual dimensions of the switch 1, the combiner 2 and their connecting components, such as the SMP connector, to ensure that all components can be installed tightly but not too compact to affect heat dissipation. There are multiple predefined positions on the tray 4 for accommodating different numbers of switches 1 and combiners 2, supporting flexible configuration to meet the needs of different application scenarios. To facilitate assembly, the surface of the tray 4 has clear alignment marks or grooves to ensure that the switch 1 and the combiner 2 can be placed accurately.

[0046] The switch 1 and the combiner 2 are securely mounted on the tray 4 using screws, snaps or other suitable mechanical fasteners. This fixing method provides the necessary stability while allowing easy removal for maintenance or replacement when necessary.

[0047] As a further explanation of the present invention, within the same group, the line connecting the midpoints of the M SMP connectors 3 is parallel to the axial direction of the switch 1 .

[0048] As a further explanation of the present invention, the M output channels are connected to one end of the combiner 2 through the M SMP connectors 3 corresponding to each other, specifically:

[0049] M signal receiving channels are provided on one end of the combiner 2, and each signal receiving channel is connected to an SMP connector 3. The number of the output channels is the same as that of the signal receiving channels, and the positions correspond one to one.

[0050] The number of signal receiving channels provided on one end of the combiner 2 is determined according to the number of output channels to be integrated. Each output channel corresponds to an SMP connector 3, so the number of signal receiving channels should be equal to the number of SMP connectors 3.

[0051] Select the appropriate combiner model: Select the appropriate combiner 2 model based on the expected operating frequency, bandwidth requirements, and power handling capabilities. Make sure the selected combiner 2 can meet the performance requirements of all output channels connected to the SMP connector 3.

[0052] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A switch combining structure of a multi-channel array feed system, comprising a switch (1) and a plurality of combiners (2), characterized in that: The multi-channel array feed system switch combination structure further includes M*N SMP connectors (3); The switch (1) is provided with M*N output channels; The M output channels, the M SMP connectors (3) and the combiners (2) are arranged in N groups along the circumferential direction of the switch (1); In each group, the M output channels are connected to one end of the combiner (2) through the M SMP connectors (3) in one-to-one correspondence, N is the number of groups of output channels, and M is the number of output channels in each group.

2. A multi-channel array feed system switch combination structure according to claim 1, characterized in that: The switch (1) is a final-stage switch in an array feed matrix.

3. A multi-channel array feed system switch combination structure according to claim 1, characterized in that: The other end of the combiner (2) is connected to the antenna unit for feeding the radio frequency signal through the SMP connector (3).

4. A multi-channel array feed system switch combination structure according to claim 1, characterized in that: The number M of the output channels in each group is at least 5.

5. The switch combination structure of a multi-channel array feed system according to claim 1, characterized in that: The switch (1) and the combiner (2) are fixed on a tray (4).

6. A multi-channel array feed system switch combination structure according to claim 1, characterized in that: In the same group, a line connecting the midpoints of the M SMP connectors (3) is parallel to the axial direction of the switch (1).

7. A multi-channel array feed system switch combination structure according to claim 1, characterized in that: The M output channels are respectively connected to one end of the combiner (2) through the M SMP connectors (3) corresponding to each other, specifically: M signal receiving channels are provided on one end of the combiner (2), and each signal receiving channel is connected to an SMP connector (3).

8. A multi-channel array feed system switch combination structure according to claim 7, characterized in that: The number of the output channels is the same as that of the signal receiving channels, and their positions correspond one to one.

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