Broadband high-power magic T combiner
By using a broadband high-power magic-T combiner with adjustable coupling post height, the problem of fixed coupling post height is solved, achieving efficient coupling and flexible adaptation, meeting diverse application needs, and improving signal transmission quality and system stability.
Patent Information
- Application Number
- CN202520490246.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-20
AI Technical Summary
The existing magic-T combiner has a fixed coupling post height, which cannot be finely adjusted according to actual needs, resulting in low coupling efficiency, high signal loss, and difficulty in adapting to diverse application scenarios and user customization requirements.
A broadband high-power magic-T combiner with adjustable coupling post height was designed. Fine adjustment of the coupling post is achieved through adjustment and guiding components, while stabilization components ensure the stability and flexibility of the coupling post, adapting to different frequencies and environmental changes.
It improves coupling efficiency, broadens the operating frequency range, reduces signal loss, enhances system flexibility and adaptability, supports customized design, and extends service life.
Smart Images
Figure CN223927639U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magic-T combiners, and in particular to a broadband high-power magic-T combiner. Background Technology
[0002] A Magic-T combiner, also known as a four-branch waveguide combiner or a directional coupler with a coupling coefficient of 1 / 2, is an important microwave component. It typically consists of two branches, ET and HT, joined together, and has four ports: the sum arm (H-arm), the difference arm (E-arm), and two symmetrical input / output ports. The Magic-T operates based on the symmetry and coupling effect of electromagnetic waves, enabling signal power distribution and combining while maintaining isolation between ports. With the continuous development of microwave communication technology, the demand for broadband high-power Magic-T combiners is increasing. This device plays a crucial role in microwave circuits such as impedance bridges, balanced mixers, balanced duplexers, and microwave discriminators. Especially in modern radar, satellite communication, and radio testing, broadband high-power Magic-T combiners can meet the stringent requirements of high frequency, high power, and low loss, ensuring the stability and reliability of microwave circuits.
[0003] However, in existing magic-T combiners, the coupling posts are generally fixed by screws, making their height impossible to adjust precisely according to actual application requirements. This results in the interaction of signals during coupling not reaching its optimal state, limiting the improvement of coupling efficiency. Furthermore, the fixed height makes it difficult to maintain consistent coupling performance across different frequencies, increasing signal loss and hindering loss balance. In addition, the fixed-height coupling posts cannot quickly adapt to changes in the working environment and conditions, reducing the system's flexibility and adaptability. Most importantly, because the coupling post height is not adjustable, the combiner design struggles to meet diverse application scenarios and user customization needs, thus limiting its application scope and market competitiveness.
[0004] Therefore, it is necessary to propose a broadband high-power magic-T combiner to solve the above problems. Utility Model Content
[0005] The main objective of this invention is to provide a broadband high-power magic-T combiner, which can effectively solve the problems in the background technology.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A broadband high-power magic T combiner includes a cavity and a coupling post disposed inside the cavity. The cavity is provided with an adjustment component for adjusting the height of the coupling post. The adjustment component includes a coupling post adjustment screw rotatably connected to one side of the cavity and corresponding to the coupling post. The end of the coupling post near the coupling post adjustment screw is provided with a second threaded hole. One end of the coupling post adjustment screw is threadedly connected to the second threaded hole, so that the coupling post is displaced axially when the coupling post adjustment screw is rotated.
[0008] It also includes a guide assembly, which includes a flange disposed at the end of the coupling post near the adjusting screw of the coupling post and protruding from the side wall of the coupling post. The flange is provided with a guide hole, and a guide post is provided at the end of the cavity near the adjusting screw of the coupling post, which is in movable guiding cooperation with the guide hole.
[0009] Preferably, a bearing corresponding to the coupling column adjusting screw is embedded in the cavity, and one end of the coupling column adjusting screw is fixed to the inner wall of the bearing, so that the coupling column adjusting screw can rotate relative to the cavity.
[0010] Preferably, it also includes a stabilizing component, which includes a limiting end cap fixedly disposed at the end of the guide post away from the adjusting screw of the coupling post and having a diameter larger than the diameter of the guide post, and an elastic element is disposed between the limiting end cap and the flange.
[0011] Preferably, the elastic element is a spring, and the elastic element is sleeved on the outside of the guide post near the end cap of the limiting end, and the elastic element is always in a contracted state.
[0012] A first threaded hole is provided on the inner side of the cavity corresponding to the guide post, and the end of the guide post away from the limiting cap is threadedly connected to the first threaded hole.
[0013] Preferably, the sidewall of the cavity is detachably fitted with a cover plate by a plurality of cover plate fixing screws.
[0014] Preferably, the sidewall of the cavity is provided with a positioning pin protruding from the sidewall of the cavity.
[0015] Preferably, a silicon carbide load is provided on the inner side of the cavity.
[0016] Compared with the prior art, this utility model provides a broadband high-power magic-T combiner, which has the following beneficial effects:
[0017] This broadband high-power Magic-T combiner features adjustable coupling post height via a specially designed adjustment mechanism. The threaded connection enables linear adjustment, allowing users to finely adjust the coupling post height according to actual needs, ensuring optimal signal interaction during coupling, thereby improving coupling efficiency and widening the operating frequency range. Furthermore, this design helps optimize signal transmission paths, reducing reflections and scattering, lowering losses, and balancing power distribution. The system thus possesses greater flexibility, quickly adapting to changes in operating environments and conditions, while being easy to maintain and extending its service life. More importantly, the adjustable coupling post height supports customized designs to meet the specific needs of different application scenarios, optimizing the structural design and making the combiner more compact and efficient.
[0018] This broadband high-power Magic T combiner, through the setting of the guide component, can increase the stability of the coupling column during adjustment, avoid rotation following the coupling column adjustment screw, ensure axial displacement, and the setting of the stabilizing component can increase the stability between the coupling column adjustment screw and the coupling column. The always contracting reverse force can reduce the possibility of loosening at the threaded connection between the coupling column adjustment screw and the second threaded hole. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a structural schematic diagram from another perspective of the present invention;
[0021] Figure 3 This is a structural diagram of the present invention in its disassembled state;
[0022] Figure 4 This is a cross-sectional structural diagram of the adjustment component of this utility model.
[0023] In the diagram: 1. Cavity; 2. Cover plate; 3. Positioning pin; 4. Coupling post; 5. Cover plate fixing screw; 6. Coupling post adjusting screw; 7. Silicon carbide load; 8. Flange; 9. Guide hole; 10. Limiting end cap; 11. Elastic element; 12. First threaded hole; 13. Second threaded hole; 14. Guide post; 15. Bearing. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figure 1-4As shown, a broadband high-power Magic-T combiner adopts the Magic-T design mode and covers the entire frequency band of WR187 / BJ48 (3.94-5.99GHz). It mainly includes a cavity 1 and a coupling post 4 set inside the cavity 1. A silicon carbide load 7 is also set inside the cavity 1. The silicon carbide custom load has a power handling capacity of more than 200W and has low loss and low VSWR performance. The side wall of the cavity 1 is detachably equipped with a cover plate 2 by multiple cover plate fixing screws 5. The side wall of the cavity 1 is provided with a positioning pin 3 protruding from the side wall of the cavity 1. The positioning pin 3 is used to guide and position the cover plate 2 when it is installed, so that the cover plate fixing screws 5 can quickly achieve the matching with the mounting hole.
[0026] The cavity 1 is provided with an adjustment assembly for adjusting the height of the coupling column 4. The adjustment assembly includes a coupling column adjusting screw 6 located on one side of the cavity 1 and corresponding to the coupling column 4. A bearing 15 corresponding to the coupling column adjusting screw 6 is embedded in the cavity 1. One end of the coupling column adjusting screw 6 is fixed to the inner wall of the bearing 15, so that the coupling column adjusting screw 6 can rotate relative to the cavity 1. A second threaded hole 13 is provided at the end of the coupling column 4 near the coupling column adjusting screw 6. One end of the coupling column adjusting screw 6 is threadedly connected to the second threaded hole 13, so that the coupling column 4 is displaced axially when the coupling column adjusting screw 6 is rotated.
[0027] In use, the height of the coupling post 4 can be easily adjusted via a threaded connection, allowing for linear adjustment. This enables users to finely adjust the height of the coupling post 4 according to actual needs, ensuring optimal signal interaction during coupling, thereby improving coupling efficiency and widening the operating frequency range. Furthermore, this design helps optimize the signal transmission path, reducing reflection and scattering, lowering losses, and balancing power distribution. The system thus possesses greater flexibility, quickly adapting to changes in the working environment and conditions, while being easy to maintain and extending its service life. More importantly, the adjustable-height coupling post 4 supports customized design to meet the specific needs of different application scenarios, optimizing the structural design and making the combiner more compact and efficient.
[0028] It also includes a guide assembly, which includes a flange 8 located at one end of the coupling post 4 near the coupling post adjusting screw 6 and protruding from the side wall of the coupling post 4. A guide hole 9 is provided on the flange 8. A guide post 14 is provided on the inner side of the cavity 1 near the coupling post adjusting screw 6, which is in movable guiding cooperation with the guide hole 9.
[0029] Furthermore, in order to increase the stability between the coupling post 4 and the coupling post adjusting screw 6, a stabilizing component is also included. The stabilizing component includes a limiting end cap 10 fixedly disposed at the end of the guide post 14 away from the coupling post adjusting screw 6 and having a diameter larger than the diameter of the guide post 14. An elastic element 11 is disposed between the limiting end cap 10 and the flange 8. The elastic element 11 is preferably a spring, and the elastic element 11 is sleeved on the outside of the end of the guide post 14 near the limiting end cap 10. The sleeved arrangement can increase the stability of the elastic element 11, and the elastic element 11 is always in a contracted state.
[0030] To facilitate the assembly and disassembly of the coupling post 4, a first threaded hole 12 is provided on the inner side of the cavity 1 at the corresponding position of the guide post 14, and the end of the guide post 14 away from the limiting end cap 10 is threadedly connected to the first threaded hole 12.
[0031] The device uses the standard WR187 / BJ40 waveguide port and has a compact overall structure.
[0032] When adjusting the height of the coupling column 4 during use, the coupling column adjusting screw 6 is turned with a tool. When the coupling column adjusting screw 6 is turned, the coupling column 4 undergoes axial displacement due to the restriction of the guide column 14 and the guide hole 9. Moreover, the elastic element 11 is always in a contracted state during displacement, and there will always be a force along the axial direction of the coupling column 4. This force is generated by the contraction of the elastic element 11. Therefore, the pressure along the axial direction of the coupling column 4 at the threaded connection between the second threaded hole 13 and the coupling column adjusting screw 6 increases, thereby preventing loosening and increasing stability.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A broadband high-power magic-T combiner, comprising a cavity (1) and a coupling post (4) disposed inside the cavity (1), characterized in that: The cavity (1) is provided with an adjustment assembly for adjusting the height of the coupling column (4). The adjustment assembly includes a coupling column adjustment screw (6) rotatably connected to one side of the cavity (1) and corresponding to the coupling column (4). The coupling column (4) is provided with a second threaded hole (13) at one end near the coupling column adjustment screw (6). One end of the coupling column adjustment screw (6) is threadedly connected to the second threaded hole (13), so that the coupling column (4) moves axially when the coupling column adjustment screw (6) is rotated. It also includes a guide assembly, which includes a flange (8) disposed on the end of the coupling post (4) near the coupling post adjusting screw (6) and protruding from the side wall of the coupling post (4). A guide hole (9) is provided on the flange (8). A guide post (14) is provided on the inner side of the cavity (1) near the coupling post adjusting screw (6) to move and guide the guide hole (9).
2. The broadband high-power magic-T combiner according to claim 1, characterized in that: The cavity (1) is fitted with a bearing (15) corresponding to the coupling column adjusting screw (6). One end of the coupling column adjusting screw (6) is fixed to the inner wall of the bearing (15), so that the coupling column adjusting screw (6) can rotate relative to the cavity (1).
3. The broadband high-power magic-T combiner according to claim 1, characterized in that: It also includes a stabilizing component, which includes a limiting end cap (10) fixedly disposed at the end of the guide post (14) away from the coupling post adjusting screw (6) and having a diameter larger than the diameter of the guide post (14). An elastic element (11) is disposed between the limiting end cap (10) and the flange (8).
4. A broadband high-power magic-T combiner according to claim 3, characterized in that: The elastic element (11) is a spring, and the elastic element (11) is sleeved on the outside of the guide post (14) near the end cap (10), and the elastic element (11) is always in a contracted state. The cavity (1) has a first threaded hole (12) at the corresponding position of the guide post (14) on the inner side. The end of the guide post (14) away from the limiting end cap (10) is threadedly connected to the first threaded hole (12).
5. A broadband high-power magic-T combiner according to claim 1, characterized in that: The side wall of the cavity (1) is detachably fitted with a cover plate (2) by a plurality of cover plate fixing screws (5).
6. A broadband high-power magic-T combiner according to claim 1, characterized in that: The side wall of the cavity (1) is provided with a positioning pin (3) protruding from the side wall of the cavity (1).
7. A broadband high-power magic-T combiner according to claim 1, characterized in that: A silicon carbide load (7) is provided on the inner side of the cavity (1).