A miniaturized diplexer

Abstract

The utility model relates to technical fields disclose a kind of miniaturization diplexers, including diplexer body, resonant column is fixedly installed in the diplexer body, capacitive cross-coupling is fixedly installed in the upper end surface of the resonant column, the upper end surface of the diplexer body is fixedly connected with fender, fender inner wall is sleeved with cover plate, the upper end surface of the cover plate is equipped with first through-hole, the upper end surface of the cover plate is equipped with second through-hole, first threaded hole is arranged in the diplexer body, support block is fixedly installed in the diplexer body, the upper end surface of the support block is equipped with second threaded hole, the upper end surface of the diplexer body is fixedly connected with waterproof sealing gasket, input end is fixedly installed in the diplexer body. The surface of cover plate is completely engaged in fender by fender, avoid when installing diplexer body and cover plate, the deviation of first threaded rod and second threaded rod, affect stability while easily causing the breakage of diplexer body.

Description

Technical Field

[0001] This utility model relates to the field of duplexer technology, and in particular to a miniaturized duplexer. Background Technology

[0002] Communication refers to the exchange and transmission of information between people or between people and nature through some behavior or medium. In a broad sense, it refers to the accurate and secure transmission of information from one party to another by any method and any medium without violating their own wishes.

[0003] A duplexer is a key component of a multi-frequency duplex radio or repeater. Its function is to isolate the transmitted and received signals, ensuring that both transmission and reception can function normally simultaneously. It consists of two sets of bandpass filters at different frequencies, preventing the transmitted signal from reaching the receiver.

[0004] Most duplexers are expensive to produce and complex to install, making it difficult to meet market demands. Therefore, a miniaturized duplexer is needed to solve these problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing duplexers, such as high production costs, complex installation, and difficulty in meeting market demands, by proposing a miniaturized duplexer.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A miniaturized duplexer includes a duplexer body, a resonant column fixedly installed inside the duplexer body, a capacitive cross-coupled element fixedly installed on the upper end face of the resonant column, a baffle frame fixedly connected to the upper end face of the duplexer body, a cover plate sleeved on the inner wall of the baffle frame, a first through hole and a second through hole on the upper end face of the cover plate, a first threaded hole inside the duplexer body, a support block fixedly installed inside the duplexer body, a second threaded hole on the upper end face of the support block, a waterproof sealing gasket fixedly connected to the upper end face of the duplexer body, an input end fixedly installed inside the duplexer body, a first output end fixedly connected to the inner wall of the duplexer body, a second output end fixedly connected to the inner wall of the duplexer body, a first threaded rod sleeved on the inner wall of the first through hole, and a second threaded rod sleeved on the inner wall of the second through hole.

[0008] Furthermore, the surface of the input end is fixedly sleeved on the left side of the duplexer body, and the lower end surface of the cover plate abuts against the upper end surface of the waterproof sealing gasket.

[0009] Furthermore, the surface of the first output end is fixedly sleeved on the right side of the duplexer body, and the surface of the second output end is fixedly sleeved on the right side of the duplexer body.

[0010] Furthermore, a resonant cavity is provided inside the duplexer body, and the first through hole surrounds the side of the cover plate;

[0011] Furthermore, the surface of the first threaded rod is fitted into the first through hole, and the surface of the first threaded rod is threaded into the first threaded hole, with the first through hole and the first threaded hole positioned vertically relative to each other.

[0012] Furthermore, the surface of the second threaded rod is sleeved in the second through hole, and the surface of the second threaded rod is threadedly connected in the second threaded hole, with the second through hole and the second threaded hole positioned vertically relative to each other;

[0013] Furthermore, the top of the resonant pillar is fixedly connected to the center of the lower end face of the capacitive cross-coupler, and a filter is fixedly connected inside the duplexer body.

[0014] This utility model has the following beneficial effects:

[0015] 1. The cover plate is completely locked inside the retaining frame to prevent deviation between the first and second threaded rods when installing the duplexer body and the cover plate, which would affect stability and easily cause damage to the duplexer body.

[0016] 2. Improve the stability and waterproofness between the cover plate and the duplexer body by using a waterproof sealing gasket to prevent external water from entering the duplexer body.

[0017] 3. By setting the input terminal, when connecting the antenna, it is responsible for coupling in the weak received signal and feeding the larger transmit power to the antenna, so as to realize bidirectional transmission of received and transmitted signals. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a miniaturized duplexer proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of a miniaturized duplexer proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of a miniaturized duplexer proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a miniaturized duplexer cover proposed in this utility model.

[0022] Legend:

[0023] 1. Duplexer body; 2. Cover plate; 3. First threaded rod; 4. First through hole; 5. Baffle frame; 6. Support block; 7. Second threaded hole; 8. Second threaded rod; 9. Resonant column; 10. Capacitive cross-coupling; 11. Output terminal 1; 12. Output terminal 2; 13. Input terminal; 14. Resonant cavity; 15. Waterproof sealing gasket; 16. First threaded hole; 17. Second through hole; 18. Filter. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1-4 An embodiment of this utility model provides a miniaturized duplexer, comprising a duplexer body 1, a resonant column 9 fixedly installed inside the duplexer body 1, a capacitive cross-coupler 10 fixedly installed on the upper end face of the resonant column 9, a baffle 5 fixedly connected to the upper end face of the duplexer body 1, a cover plate 2 sleeved on the inner wall of the baffle 5, a first through hole 4 and a second through hole 17 opened on the upper end face of the cover plate 2, a first threaded hole 16 opened inside the duplexer body 1, a support block 6 fixedly installed inside the duplexer body 1, a second threaded hole 7 opened on the upper end face of the support block 6, a waterproof sealing gasket 15 fixedly connected to the upper end face of the duplexer body 1, an input end 13 fixedly installed inside the duplexer body 1, a first output end 11 fixedly connected to the inner wall of the duplexer body 1, and a second output end 12 fixedly connected to the inner wall of the duplexer body 1.

[0026] The baffle 5 can limit the cover plate 2, making the cover plate 2 more stable when placed downwards above the duplexer body 1. It can not only protect the surface of the cover plate 2, but also prevent sharp edges from hitting objects or people and causing damage, thus providing high protection and safety.

[0027] Reference Figure 1-4 The surface of the input end 13 is fixedly sleeved on the left side of the duplexer body 1, and the lower end of the cover plate 2 abuts against the upper end of the waterproof sealing gasket 15.

[0028] By setting input terminal 13, when connecting the antenna, it is responsible for coupling in the weak received signal and feeding the larger transmit power to the antenna, so as to realize bidirectional transmission of received and transmitted signals.

[0029] Reference Figure 1-4The surface of the first output terminal 11 is fixedly sleeved on the right side of the duplexer body 1, and the surface of the second output terminal 12 is fixedly sleeved on the right side of the duplexer body 1.

[0030] By setting output terminal 11 and output terminal 12, both are used to output low-frequency band radio frequency signals.

[0031] Reference Figure 1-4 The duplexer body 1 has a resonant cavity 14 inside, and the first through hole 4 surrounds the side of the cover plate 2.

[0032] By setting up the resonant cavity 14 and adjusting the length of the screws on the resonant cavity 14 to change the signal band pass frequency, adjustments need to be made in conjunction with a professional frequency sweeper and frequency generator.

[0033] Reference Figure 1-4 The surface of the first threaded rod 3 is fitted into the first through hole 4, and the surface of the first threaded rod 3 is threaded into the first threaded hole 16. The first through hole 4 and the first threaded hole 16 are set to be in an upper and lower relative position.

[0034] By setting the first threaded rod 3, when the first threaded rod 3 passes through the first through hole 4 and penetrates the inner wall of the cover plate 2 and abuts into the duplexer body 1, the installation and positioning of the cover plate 2 is completed.

[0035] Reference Figure 1-4 The surface of the second threaded rod 8 is sleeved in the second through hole 17, and the surface of the second threaded rod 8 is threadedly connected in the second threaded hole 7. The second through hole 17 and the second threaded hole 7 are set to be in an upper and lower relative position.

[0036] By setting the first threaded rod 3, when the first threaded rod 3 passes through the first through hole 4 and penetrates the inner wall of the cover plate 2 and abuts into the duplexer body 1, the stability between the cover plate 2 and the duplexer body 1 is further improved.

[0037] Reference Figure 1-4 The top of the resonant column 9 is fixedly connected to the center of the lower end face of the capacitive cross-coupler 10, and a filter 18 is fixedly connected inside the duplexer body 1.

[0038] By setting the resonant pillar 9 and the capacitive cross-coupling 10, the resonant pillar 9 is one of the elements constituting the resonant cavity 14 filter 18. Meanwhile, the capacitive cross-coupling 10 refers to the electromagnetic coupling method in which the electromagnetic interference source acts on the sensitive object through the electric field between the circuit or system and in the form of mutual capacitance coupling capacitor.

[0039] Working principle: Filter 18 improves signal purity by suppressing interference signals of specific frequencies, such as power supply noise and high-frequency harmonics, while retaining useful signals. For example, in a power supply system, filter 18 can reduce the impact of AC voltage noise on electronic equipment. Meanwhile, the resonant pillar 9 is one of the elements constituting the resonant cavity 14 and filter 18. Capacitive coupling refers to the electromagnetic coupling method where electromagnetic interference sources act on sensitive objects through the electric field between circuits or systems and in the form of mutual capacitance coupling. When connected to the antenna via input terminal 13, it is responsible for coupling in weak received signals and feeding larger transmitted power to the antenna, achieving bidirectional transmission of received and transmitted signals. Furthermore, under the action of the first output terminal 11 and the third bottom terminal, it is used to output low-frequency radio frequency signals. When the cover plate 2 is connected to the duplexer body 1, the cover plate 2 is used to... The body 1 moves downwards, so that the surface is completely fitted into the baffle 5. The cover plate 2 can prevent the cover plate 2 from shaking around by engaging with the baffle 5, and realize that the first through hole 4 and the first threaded hole 16 are in a vertically opposite position and the second through hole 17 and the second threaded hole 7 are in a vertically opposite position. The first threaded rod 3 and the second threaded rod 8 respectively abut into the first through hole 4 and the second through hole 17. No calibration is required. This device improves the sealing and stability between the cover plate 2 and the duplexer body 1 by limiting the installation of the sides and the middle of the cover plate 2. At the same time, under the action of the waterproof sealing gasket 15, it can improve the connection between the cover plate 2 and the duplexer body 1 and has a waterproof effect, preventing water vapor from entering the interior.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A miniaturized duplexer, comprising a duplexer body (1), characterized in that: A resonant column (9) is fixedly installed inside the duplexer body (1). A capacitive cross-coupler (10) is fixedly installed on the upper end face of the resonant column (9). A baffle (5) is fixedly connected to the upper end face of the duplexer body (1). A cover plate (2) is sleeved on the inner wall of the baffle (5). A first through hole (4) is opened on the upper end face of the cover plate (2). A second through hole (17) is opened on the upper end face of the cover plate (2). A first threaded hole (16) is opened inside the duplexer body (1). A support block is fixedly installed inside the duplexer body (1). 6) The upper end face of the support block (6) is provided with a second threaded hole (7), the upper end face of the duplexer body (1) is fixedly connected with a waterproof sealing gasket (15), the input end (13) is fixedly installed inside the duplexer body (1), the first output end (11) is fixedly connected to the inner wall of the duplexer body (1), the second output end (12) is fixedly connected to the inner wall of the duplexer body (1), the first threaded rod (3) is sleeved on the inner wall of the first through hole (4), and the second threaded rod (8) is sleeved on the inner wall of the second through hole (17).

2. A miniaturized duplexer according to claim 1, characterized in that: The surface of the input end (13) is fixedly sleeved on the left side of the duplexer body (1), and the lower end of the cover plate (2) abuts against the upper end of the waterproof sealing gasket (15).

3. A miniaturized duplexer according to claim 1, characterized in that: The surface of the first output terminal (11) is fixedly sleeved on the right side of the duplexer body (1), and the surface of the second output terminal (12) is fixedly sleeved on the right side of the duplexer body (1).

4. A miniaturized duplexer according to claim 1, characterized in that: The duplexer body (1) has a resonant cavity (14) inside, and the first through hole (4) surrounds the side of the cover plate (2).

5. A miniaturized duplexer according to claim 1, characterized in that: The surface of the first threaded rod (3) is fitted into the first through hole (4), and the surface of the first threaded rod (3) is threaded into the first threaded hole (16). The first through hole (4) and the first threaded hole (16) are set to be in an up-down relative position.

6. A miniaturized duplexer according to claim 1, characterized in that: The surface of the second threaded rod (8) is fitted into the second through hole (17), and the surface of the second threaded rod (8) is threaded into the second threaded hole (7). The second through hole (17) and the second threaded hole (7) are set to be in an up-down relative position.

7. A miniaturized duplexer according to claim 1, characterized in that: The top of the resonant column (9) is fixedly connected to the center of the lower end face of the capacitive cross-coupler (10), and a filter (18) is fixedly connected inside the duplexer body (1).

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