High-power broadband duplexer

Abstract

The invention, which relates to the technical field of wireless communication, discloses a high-power broadband duplexer comprising a duplexer body and a debugging cover plate. A first cavity and a second cavity are integrally formed on the duplexer body, the first cavity is communicated with the second cavity, a plurality of uniformly distributed first resonators are arranged in the first cavity, and a plurality of uniformly distributed second resonators are arranged in the second cavity; the duplexer body is provided with a common input port, a first output port and a second output port, the common input port is located at the intersection of the first cavity and the second cavity, the scheme avoids the installation of a traditional resonator through the design of the integrated cavity, thereby improving the stability of the overall structure, introducing the cooling fins to effectively accelerate the heat dissipation, and improving the heat dissipation efficiency. Higher power use is supported; and meanwhile, by optimizing the internal structure, the isolation degree of received and transmitted signals exceeding 110dB is realized, the signal interference between the cavities is remarkably reduced, and in addition, the realization of low insertion loss helps to improve the transmission efficiency of the signals.

Description

Technical Field

[0001] The invention relates to a high-power broadband duplexer, belonging to the technical field of wireless communications. Background Art

[0002] Traditional broadband duplexers mostly use PCB-based microstrip line solutions. Although they can meet basic communication needs in some applications, they have many shortcomings. The insertion loss of this traditional solution is usually large, generally above 1.5dB, and the isolation is also poor, usually only reaching about 50dB. In addition, due to the physical and electrical limitations of PCB materials and microstrip lines, the power handling capacity of these duplexers is weak, usually in the range of 5-30W, which makes it difficult for them to cope with the needs of high-power transmission.

[0003] These limitations significantly affect the application of duplexers in high-end communication systems, especially in mobile communication base stations, broadcasting systems, satellite communications and radar systems, which often require higher signal clarity and greater power handling capabilities; the low isolation of the duplexer may cause mutual interference between the transmitted signal and the received signal, thereby reducing the communication quality and system stability. At the same time, high insertion loss means that the signal loses a lot of energy during transmission, which not only affects efficiency but may also cause additional energy consumption in the system. Summary of the invention

[0004] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a high-power broadband duplexer.

[0005] The technical solution of the present invention is achieved as follows: a high-power broadband duplexer, comprising a duplexer body and a debugging cover; a first cavity and a second cavity are integrally formed on the duplexer body, the first cavity and the second cavity are connected, a plurality of uniformly distributed first resonators are arranged in the first cavity, and a plurality of uniformly distributed second resonators are arranged in the second cavity;

[0006] The duplexer body is provided with a common input port, a first output port and a second output port, wherein the common input port is located at the intersection of the first cavity and the second cavity, the first output port is located at the end of the first cavity, and the second output port is located at the end of the second cavity;

[0007] The common input port is provided with a common RF connector, the common RF connector passes through the common input port and is connected to the first resonator at the starting end of the first cavity; the common RF connector located in the first cavity is provided with a connector, the connector is used to connect the second resonator located at the starting end of the second cavity; the first output port is provided with a first RF connector, the first RF connector passes through the first output port and is connected to the first resonator at the end of the first cavity; the second output port is provided with a second RF connector, the second RF connector passes through the second output port and is connected to the second resonator at the end of the second cavity;

[0008] The debugging cover is connected and fixed on the duplexer body. A plurality of first tuning screws and second tuning screws are arranged on the debugging cover. The plurality of first tuning screws cooperate with a plurality of first resonators, and the plurality of second tuning screws cooperate with a plurality of second resonators.

[0009] Preferably, the debugging cover is provided with a first groove and a second groove, the first groove is provided with a plurality of first tuning holes, the first tuning screw passes through the first tuning holes and cooperates with the first resonator; the second groove is provided with a plurality of second tuning holes, the second tuning screw passes through the second tuning holes and cooperates with the second resonator.

[0010] Preferably, the height of the first resonator is smaller than the height of the second resonator.

[0011] Preferably, the duplexer body is provided with a first protrusion structure, a second protrusion structure and a third protrusion structure, the first RF connector is connected and fixed to the first protrusion structure, the second RF connector is connected and fixed to the second protrusion structure, and the common RF connector is connected and fixed to the third protrusion structure.

[0012] Preferably, the debugging cover plate is provided with an avoidance groove structure for avoiding the first protrusion structure, the second protrusion structure and the third protrusion structure.

[0013] Preferably, the first protruding structure, the second protruding structure and the third protruding structure are all integrally formed on the duplexer body.

[0014] Preferably, the bottom of the duplexer body is integrally formed with a plurality of evenly distributed heat sinks.

[0015] Preferably, the first cavity is in a Z-shape, and the second cavity is in a straight line shape.

[0016] Preferably, a third cavity is further provided on the duplexer body, and the third cavity is located between the first cavity and the second cavity.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] A high-power broadband duplexer of the present invention avoids traditional resonator installation through an integrated cavity design, thereby improving the overall structural stability. The introduction of a heat sink can effectively accelerate heat dissipation to support higher power usage. At the same time, by optimizing the internal structure, an isolation of more than 110dB of transmit and receive signals is achieved, which significantly reduces signal interference between cavities. In addition, the realization of low insertion loss helps to improve signal transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Attached Figure 1 It is a structural schematic diagram of a high-power broadband duplexer according to the present invention;

[0021] Attached Figure 2 This is a structural schematic diagram of a high-power broadband duplexer according to the present invention with a debugging cover removed;

[0022] Attached Figure 3 For attachment Figure 2 The enlarged view of point A in the middle;

[0023] Attached Figure 4 It is a structural schematic diagram of the duplexer body of the present invention;

[0024] Attached Figure 5 It is a structural schematic diagram of the debugging cover plate of the present invention;

[0025] Attached Figure 6 This is a parameter curve diagram of a high-power broadband duplexer described in the present invention.

[0026] In the figure: 1. duplexer body; 2. debugging cover; 3. first cavity; 4. second cavity; 5. first resonator; 6. second resonator; 7. common input port; 8. first output port; 9. second output port; 10. common RF connector; 11. connecting piece; 12. first RF connector; 13. second RF connector; 14. first tuning screw; 15. second tuning screw; 16. first groove; 17. second groove; 18. first tuning hole; 19. second tuning hole; 20. first protrusion structure; 21. second protrusion structure; 22. third protrusion structure; 23. avoidance groove structure; 24. heat sink; 25. third cavity; 26. fixing bolt. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "straight", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] As attached Figure 1-6 As shown, a high-power broadband duplexer described in the present invention comprises a duplexer body 1 and a debugging cover 2 .

[0031] The duplexer body 1 is integrally formed with a first cavity 3 and a second cavity 4, which are connected to each other. The first cavity 3 is provided with a plurality of evenly distributed first resonators 5, and the second cavity 4 is provided with a plurality of evenly distributed second resonators 6. In the present embodiment, the first cavity 3 and the second cavity 4 are both all-metal cavities. By adopting an all-metal cavity design and integrated processing, there is no need to install traditional resonators, thereby greatly improving the structural stability.

[0032] The first cavity 3 is in a Z-shape, the second cavity 4 is in a straight-line shape, and the height of the first resonator 5 is smaller than the height of the second resonator 6 .

[0033] The duplexer body 1 is provided with a common input port 7, a first output port 8 and a second output port 9. The common input port 7 is located at the intersection of the first cavity 3 and the second cavity 4, the first output port 8 is located at the end of the first cavity 3, and the second output port 9 is located at the end of the second cavity 4; the common input port 7 is provided with a common RF connector 10 to ensure signal input, the common RF connector 10 passes through the common input port 7 and is connected to the first resonator 5 at the starting end of the first cavity 3, and the common RF connector 10 located in the first cavity 3 is provided with a connector 11, which is used to connect the second resonator 6 located at the starting end of the second cavity 4 to ensure that the common RF connector 10 is connected with the first resonator 5 and the second resonator 6; the first output port 8 is provided with a first RF connector 12 to output signals, the first RF connector 12 passes through the first output port 8 and is connected to the first resonator 5 at the end of the first cavity 3; the second output port 9 is provided with a second RF connector 13 to output signals, the second RF connector 13 passes through the second output port 9 and is connected to the second resonator 6 at the end of the second cavity 4.

[0034] By optimizing the internal structure of the duplexer body 1, a high isolation of more than 110dB is achieved, signal interference is effectively reduced, and the low insertion loss design further improves the efficiency of signal transmission.

[0035] The debugging cover plate 2 is connected and fixed on the duplexer body 1 . In this embodiment, specifically, a plurality of fixing bolts 26 are provided on the debugging cover plate 2 , and the debugging cover plate 2 is fixed on the duplexer body 1 through the plurality of fixing bolts 26 .

[0036] The debugging cover 2 is provided with a plurality of first tuning screws 14 and a second tuning screw 15, the plurality of first tuning screws 14 cooperate with the plurality of first resonators 5, and the plurality of second tuning screws 15 cooperate with the plurality of second resonators 6. In this embodiment, the debugging cover 2 is provided with a first groove 16 and a second groove 17, the first groove 16 is provided with a plurality of first tuning holes 18, the first tuning screw 14 passes through the first tuning holes 18 and cooperates with the first resonator 5; the second groove 17 is provided with a plurality of second tuning holes 19, the second tuning screw 15 passes through the second tuning holes 19 and cooperates with the second resonator 6; by providing the first groove 16 and the second groove 17 on the debugging cover 2, the first tuning screw 14 is located in the first groove 16, and the second tuning screw 15 is located in the second groove 17, so that the portion of the first tuning screw 14 and the second tuning screw 15 protruding from the debugging cover 2 can be reduced, thereby reducing the volume of the entire duplexer.

[0037] As attached Figure 2-4As shown, a first protrusion structure 20, a second protrusion structure 21 and a third protrusion structure 22 are provided on the duplexer body 1. In this embodiment, the first protrusion structure 20, the second protrusion structure 21 and the third protrusion structure 22 are all integrally formed on the duplexer body 1; the first RF connector 12 is connected and fixed on the first protrusion structure 20, the second RF connector 13 is connected and fixed on the second protrusion structure 21, and the common RF connector 10 is connected and fixed on the third protrusion structure 22; accordingly, an avoidance groove structure 23 for avoiding the first protrusion structure 20, the second protrusion structure 21 and the third protrusion structure 22 is provided on the debugging cover 2 to ensure that the debugging cover 2 is tightly connected to the duplexer body 1.

[0038] The bottom of the duplexer body 1 is integrally formed with a plurality of evenly distributed heat sinks 24 . By providing the heat sinks 24 at the bottom of the duplexer body 1 , the heat dissipation process can be accelerated to support power usage of more than 100W.

[0039] As an optional implementation, a third cavity 25 is further provided on the duplexer body 1, and the third cavity 25 is located between the first cavity 3 and the second cavity 4. The third cavity 25 can not only reduce the weight of the duplexer body 1, but also save materials and reduce costs.

[0040] In summary, a high-power broadband duplexer of the present application provides a high-frequency relative bandwidth of more than 50% due to its structural optimization and technological innovation, significantly expands the scope of application, and is suitable for a variety of high-frequency communication scenarios; this design not only improves the flexibility and efficiency of communication, but also ensures clear signal transmission and the overall performance of the system through its high isolation and low insertion loss characteristics.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-power broadband duplexer, characterized in that: The invention comprises a duplexer body (1) and a debugging cover plate (2); a first cavity (3) and a second cavity (4) are integrally formed on the duplexer body (1); the first cavity (3) and the second cavity (4) are connected; a plurality of uniformly distributed first resonators (5) are arranged in the first cavity (3); and a plurality of uniformly distributed second resonators (6) are arranged in the second cavity (4); The duplexer body (1) is provided with a common input port (7), a first output port (8) and a second output port (9); the common input port (7) is located at the intersection of the first cavity (3) and the second cavity (4); the first output port (8) is located at the end of the first cavity (3); and the second output port (9) is located at the end of the second cavity (4); The common input port (7) is provided with a common radio frequency connector (10), the common radio frequency connector (10) passes through the common input port (7) and is connected to the first resonator (5) at the starting end of the first cavity (3), and the common radio frequency connector (10) located in the first cavity (3) is provided with a connecting piece (11), the connecting piece (11) is used to connect the second resonator (6) located at the starting end of the second cavity (4); the first output port (8) is provided with a first radio frequency connector (12), the first radio frequency connector (12) passes through the first output port (8) and is connected to the first resonator (5) at the end of the first cavity (3); the second output port (9) is provided with a second radio frequency connector (13), the second radio frequency connector (13) passes through the second output port (9) and is connected to the second resonator (6) at the end of the second cavity (4); The debugging cover (2) is connected and fixed to the duplexer body (1); a plurality of first tuning screws (14) and a second tuning screw (15) are provided on the debugging cover (2); the plurality of first tuning screws (14) cooperate with the plurality of first resonators (5); and the plurality of second tuning screws (15) cooperate with the plurality of second resonators (6).

2. A high-power broadband duplexer according to claim 1, characterized in that: The debugging cover plate (2) is provided with a first groove (16) and a second groove (17); the first groove (16) is provided with a plurality of first tuning holes (18); the first tuning screw (14) passes through the first tuning holes (18) to cooperate with the first resonator (5); the second groove (17) is provided with a plurality of second tuning holes (19); the second tuning screw (15) passes through the second tuning holes (19) to cooperate with the second resonator (6).

3. A high-power broadband duplexer according to claim 1, characterized in that: The height of the first resonator (5) is smaller than the height of the second resonator (6).

4. The high-power broadband duplexer according to claim 1, characterized in that: The duplexer body (1) is provided with a first protruding structure (20), a second protruding structure (21) and a third protruding structure (22); the first radio frequency connector (12) is connected and fixed to the first protruding structure (20); the second radio frequency connector (13) is connected and fixed to the second protruding structure (21); and the common radio frequency connector (10) is connected and fixed to the third protruding structure (22).

5. A high-power broadband duplexer according to claim 4, characterized in that: The debugging cover plate (2) is provided with an avoidance groove structure (23) for avoiding the first protruding structure (20), the second protruding structure (21) and the third protruding structure (22).

6. A high-power broadband duplexer according to claim 4, characterized in that: The first protruding structure (20), the second protruding structure (21) and the third protruding structure (22) are all integrally formed on the duplexer body (1).

7. The high-power broadband duplexer according to claim 1, characterized in that: The bottom of the duplexer body (1) is integrally formed with a plurality of evenly distributed heat sinks (24).

8. The high-power broadband duplexer according to claim 1, characterized in that: The first cavity (3) is in a Z-shape, and the second cavity (4) is in a straight-line shape.

9. The high-power broadband duplexer according to claim 1, characterized in that: The duplexer body (1) is also provided with a third cavity (25), and the third cavity (25) is located between the first cavity (3) and the second cavity (4).

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