Open zeros for filters, duplexers, and combiners

Abstract

The present invention discloses an open zero point of a filter, a duplexer and a combiner, comprising a cavity, a capacitor flying rod and an input copper sheet, wherein a cover plate is provided at the upper end of the cavity, a cover plate fixing screw is provided on the cover plate, and the cover plate fixing screw passes through the cover plate and is connected to the cavity by a thread. The beneficial effect is that: by setting an open cavity, all the windows between the three resonant cavities in the cavity are opened to enhance coupling, and the structure of the two points of the open window is used, so that the coupling between the two resonant cavities can be amplified in the actual process, and the required window width will become smaller, which can make the processing method of the cavity simpler and more convenient, and make the coupling amplification easier to realize and control, which is very practical; and the structure of the capacitor flying rod support member enables the height of the boss on the side of the capacitor flying rod support member to greatly change the capacitance value, and at the same time, another resonance point can be obtained by adjusting the length of the capacitor flying rod, so that two zero point forms are obtained through one capacitor structure, so that the structure of the cavity is further simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of construction trolley resonance equipment, and particularly to an open zero point of a filter, a duplexer, and a combiner. Background Art

[0002] A resonant cavity is a metal cavity designed to continuously oscillate a high-frequency electromagnetic field. Because the electromagnetic field is completely concentrated within the cavity, there is no radiation loss, resulting in a high quality factor. Resonant cavities come in many shapes, the most common being rectangular and cylindrical. Within a resonant cavity, the electromagnetic field can oscillate at a range of frequencies, the magnitude of which depends on the cavity's shape, geometry, and resonant waveform. When two or more circuits form a network, a change in current or voltage in one circuit can affect similar changes in the other circuits. This network is called a coupled circuit. Coupling transfers (or converts) energy from one circuit to the other. The cavity of a resonant cavity is a crucial component.

[0003] The cavity used in the existing resonator needs to open the window to the maximum due to the strong coupling between the resonant cavity windows. It is also necessary to connect the two resonators to achieve strong coupling, which makes the cavity processing more difficult, and the coupling amplification is difficult to control, resulting in insufficient practicality. Summary of the Invention

[0004] The object of the present invention is to provide an open zero point of a filter, a duplexer, and a combiner in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The open zero point of the filter, duplexer and combiner includes a cavity, a capacitor flying rod and an input copper sheet. A cover plate is provided at the upper end of the cavity, and a cover plate fixing screw is provided on the cover plate. The cover plate fixing screw passes through the cover plate and is connected to the cavity by a thread. A capacitor flying rod support is provided on one side of the middle part of the cavity, the capacitor flying rod is provided on the upper end of the capacitor flying rod support, and a capacitor flying rod fixing screw is provided in the middle of the upper end of the capacitor flying rod. The input copper sheet is provided on one side of the capacitor flying rod, and an output copper sheet is provided on the side of the capacitor flying rod away from the input copper sheet. A tuning screw is provided on the other side of the capacitor flying rod, and there are two tuning screws.

[0007] Furthermore, an input copper sheet fixing screw is provided at the upper end of the input copper sheet, and the input copper sheet fixing screw passes through the input copper sheet and is connected to the cavity through a thread, and the input copper sheet and the cavity are connected through the input copper sheet fixing screw.

[0008] By adopting the above technical solution, the input copper sheet is fixed to the cavity by the input copper sheet fixing screws, and the input copper sheet fixing screws can be easily unscrewed from the cavity so that the input copper sheet can be removed from the cavity.

[0009] Furthermore, the input copper sheet is connected to an input connecting column through a slot at one end away from the input copper sheet fixing screw. The input connecting column passes through the side wall of the cavity. An input connector formed in the cavity is provided on the periphery of one end of the input connecting column passing through the side wall of the cavity.

[0010] By adopting the above technical solution, the input connector is connected to the input copper sheet through the input connecting column, so that external components can be connected to the input copper sheet through the input connector.

[0011] Furthermore, an output copper sheet fixing screw is provided at the upper end of the output copper sheet, and the output copper sheet fixing screw passes through the output copper sheet and is connected to the cavity through a thread, and the output copper sheet and the cavity are connected through the output copper sheet fixing screw.

[0012] By adopting the above technical solution, the output copper sheet is fixed to the cavity by the output copper sheet fixing screw, and the output copper sheet fixing screw can be easily unscrewed from the cavity to remove the output copper sheet from the cavity.

[0013] Furthermore, the output copper sheet is connected to an output connecting column through a slot at one end away from the output copper sheet fixing screw. The output connecting column passes through the side wall of the cavity. An output connector formed in the cavity is provided on the periphery of one end of the output connecting column passing through the side wall of the cavity.

[0014] By adopting the above technical solution, the output connector is connected to the output copper sheet through the output connecting column, so that external components can be connected to the output copper sheet through the output connector.

[0015] Furthermore, the cover plate is connected to the cavity through the cover plate fixing screws, the capacitor flying rod support is formed on one side of the middle part of the cavity, and the upper end of the capacitor flying rod support is connected to the capacitor flying rod through a slot.

[0016] By adopting the above technical solution, the cover fixing screws can be easily disassembled from the cavity, so that the cover can be easily removed from the cavity. The height of the boss on the side of the capacitor flying rod support can greatly change the capacitance value. At the same time, by adjusting the length of the capacitor flying rod, another resonance point can be obtained, thereby obtaining two zero point forms through a capacitor structure.

[0017] Furthermore, the capacitor flying rod fixing screw passes through the capacitor flying rod and is connected to the capacitor flying rod support member through a threaded connection. The capacitor flying rod fixing screw presses and fixes the capacitor flying rod in the slot at the upper end of the capacitor flying rod support member.

[0018] By adopting the above technical solution, the capacitor flying rod fixing screw can be separated from the capacitor flying rod support member, so that the capacitor flying rod can be easily removed from the capacitor flying rod support member.

[0019] Furthermore, the capacitor flying rod fixing screw is made of PEEK material, and the tuning screw passes through the cover plate and is connected to the cavity through a thread.

[0020] By adopting the above technical solution, the capacitor flying rod fixing screw made of PEEK material is a non-metallic material and will not affect the resonance.

[0021] Furthermore, the input connecting column is made of copper material, and one end of the input connecting column away from the input copper sheet is plugged into the inner wall of the input connector.

[0022] By adopting the above technical solution, the input connection column made of copper material has good electrical conductivity.

[0023] Furthermore, the output connecting post is made of copper material, and one end of the output connecting post away from the output copper sheet is plugged into the inner wall of the output connector.

[0024] By adopting the above technical solution, the output connecting column made of copper material has good electrical conductivity.

[0025] The specific working principle is: the input connector is connected to the input device, and the input device can be connected to the input copper sheet through the input connector and the input connecting column; the output connector is connected to the output device, and the output device can be connected to the output copper sheet through the output connector and the output connecting column; an open window zero point structure is used between the two resonant cavities where the input copper sheet and the output copper sheet are located. In actual use, the coupling between the two resonant cavities can be amplified, so that the required width of the window is reduced, and the cavity can be easier to process and control. The height of the boss on the side of the capacitor flying rod support can be greatly changed. The capacitance value is changed, and at the same time, another resonance point can be obtained by adjusting the length of the capacitor flying rod, thereby obtaining two zero-point forms through a capacitor structure. The height of the boss on the side of the capacitor flying rod support is relatively low, so that it will not block the three resonant cavities at the intersection of the three resonant cavities in the cavity. In this way, the windows between the three resonant cavities in the cavity are all opened, which can enhance the coupling. Opening all the windows between the three resonant cavities enhances the coupling, which solves the problem that the windows need to be opened to the maximum due to the strong coupling between the windows, and the two resonators need to be connected to achieve strong coupling, thereby reducing the processing difficulty of the equipment.

[0026] The beneficial effects of the present invention are:

[0027] In order to solve the problem that the cavity used in the existing resonator needs to open the window to the maximum due to the strong coupling between the resonant cavity windows, and the two resonators need to be connected to achieve strong coupling, which makes the cavity processing more difficult and the coupling amplification difficult to control, the present invention sets an open cavity, opens all the windows between the three resonant cavities in the cavity to enhance the coupling, uses the two-point structure of the open window, and can amplify the coupling between the two resonant cavities in the actual process, while the required window width will become smaller, which can make the cavity processing method simpler and more convenient, and make the coupling amplification easier to achieve and control, and is very practical; and the structure of the capacitor flying rod support member enables the height of the boss on the side of the capacitor flying rod support member to greatly change the capacitance value, and at the same time, another resonance point can be obtained by adjusting the length of the capacitor flying rod, so that two zero point forms are obtained through one capacitor structure, so that the structure of the cavity is further simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the open zero of the filter, duplexer and combiner of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the filter, duplexer, and combiner of the present invention after the cover plate is removed from the open zero point;

[0030] Figure 3It is a structural diagram of the cover plate in the open zero point of the filter, duplexer and combiner of the present invention;

[0031] Figure 4 is a top cross-sectional view of the open zero point of the filter, duplexer, and combiner of the present invention;

[0032] Figure 5 This is a top view of the open zero of the filter, duplexer, and combiner of the present invention with the cover removed;

[0033] Figure 6 It is a side view of the open zero point of the filter, duplexer and combiner described in the present invention.

[0034] The following are the descriptions of the reference numerals:

[0035] 1. Cavity; 2. Cover; 3. Capacitor flying rod; 4. Capacitor flying rod support; 5. Capacitor flying rod fixing screw; 6. Input copper sheet fixing screw; 7. Input copper sheet; 8. Input connector; 9. Output copper sheet fixing screw; 10. Output copper sheet; 11. Output connector; 12. Cover fixing screw; 13. Tuning screw; 14. Input connecting post; 15. Output connecting post. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings:

[0037] like Figures 1-6 As shown, the open zero point of the filter, duplexer and combiner includes a cavity 1, a capacitor flying rod 3 and an input copper plate 7. A cover plate 2 is provided at the upper end of the cavity 1, and a cover plate fixing screw 12 is provided on the cover plate 2. The cover plate fixing screw 12 passes through the cover plate 2 and is connected to the cavity 1 by a thread. A capacitor flying rod support 4 is provided on one side of the middle part of the cavity 1, and the capacitor flying rod 3 is provided on the upper end of the capacitor flying rod support 4. A capacitor flying rod fixing screw 5 is provided in the middle of the upper end of the capacitor flying rod 3, the input copper plate 7 is provided on one side of the capacitor flying rod 3, and an output copper plate 10 is provided on the side of the capacitor flying rod 3 away from the input copper plate 7. A tuning screw 13 is provided on the other side of the capacitor flying rod 3, and there are two tuning screws 13.

[0038] like Figure 2-Figure 5 As shown, an input copper sheet fixing screw 6 is provided at the upper end of the input copper sheet 7, and the input copper sheet fixing screw 6 passes through the input copper sheet 7 and is connected to the cavity 1 by a thread. The input copper sheet 7 and the cavity 1 are connected by the input copper sheet fixing screw 6, and the input copper sheet 7 is fixed to the cavity 1 by the input copper sheet fixing screw 6. The input copper sheet fixing screw 6 can be easily unscrewed from the cavity 1, so that the input copper sheet 7 can be easily separated from the cavity 1.

[0039] like Figure 2-Figure 6 As shown, the input copper sheet 7 is connected to an input connecting column 14 through a card slot at one end away from the input copper sheet fixing screw 6. The input connecting column 14 passes through the side wall of the cavity 1. The input connecting column 14 passes through the side wall of the cavity 1 and an input connector 8 formed on the periphery of one end is provided. The input connector 8 is connected to the input copper sheet 7 through the input connecting column 14, so that external components can be connected to the input copper sheet 7 through the input connector 8, which is very convenient.

[0040] like Figure 2-Figure 5 As shown, an output copper sheet fixing screw 9 is provided at the upper end of the output copper sheet 10, and the output copper sheet fixing screw 9 passes through the output copper sheet 10 and is connected to the cavity 1 by a thread. The output copper sheet 10 and the cavity 1 are connected by the output copper sheet fixing screw 9. The output copper sheet 10 is fixed to the cavity 1 by the output copper sheet fixing screw 9. The output copper sheet fixing screw 9 can be easily unscrewed from the cavity 1, so that the output copper sheet 10 can be easily disassembled from the cavity 1.

[0041] like Figure 2-Figure 6 As shown, the output copper sheet 10 is connected to an output connecting column 15 through a card slot at one end away from the output copper sheet fixing screw 9. The output connecting column 15 passes through the side wall of the cavity 1. The output connecting column 15 passes through the side wall of the cavity 1 and an output connector 11 formed on the outer periphery of one end is provided. The output connector 11 is connected to the output copper sheet 10 through the output connecting column 15, so that external components can be connected to the output copper sheet 10 through the output connector 11, which is very convenient.

[0042] like Figure 1-Figure 5 As shown, the cover plate 2 is connected to the cavity 1 through the cover plate fixing screw 12, and the capacitor flying rod support member 4 is formed on one side of the middle part of the cavity 1. The upper end of the capacitor flying rod support member 4 is connected to the capacitor flying rod 3 through a slot, and the cover plate fixing screw 12 can be easily disassembled from the cavity 1, so that the cover plate 2 can be easily removed from the cavity 1. The height of the boss on the side of the capacitor flying rod support member 4 can greatly change the capacitance value. At the same time, by adjusting the length of the capacitor flying rod 3, another resonance point can be obtained, thereby obtaining two zero point forms through a capacitor structure. The height of the boss on the side of the capacitor flying rod support member 4 is low, so that it will not block the three resonant cavities at the junction of the three resonant cavities in the cavity 1, so that the windows between the three resonant cavities in the cavity 1 are all open, which can enhance coupling.

[0043] like Figure 2-Figure 5As shown, the capacitor flying rod fixing screw 5 passes through the capacitor flying rod 3 and is connected to the capacitor flying rod support 4 by a threaded connection. The capacitor flying rod fixing screw 5 presses and fixes the capacitor flying rod 3 in the slot at the upper end of the capacitor flying rod support 4. The capacitor flying rod fixing screw 5 can be disassembled from the capacitor flying rod support 4, so that the capacitor flying rod 3 can be easily removed from the capacitor flying rod support 4, and the slot at the upper end of the capacitor flying rod 3 fixing part has a positioning effect on the capacitor flying rod 3.

[0044] like Figure 1-Figure 5 As shown, the capacitor flying rod fixing screw 5 is made of PEEK material, and the tuning screw 13 passes through the cover plate 2 and is connected to the cavity 1 by a thread. The capacitor flying rod fixing screw 5 made of PEEK material is a non-metallic material and will not affect the resonance. The tuning operation can be performed through the tuning screw 13.

[0045] like Figure 4-Figure 6 As shown, the input connecting column 14 is made of copper material. The end of the input connecting column 14 away from the input copper sheet 7 is plugged into the inner wall of the input connector 8. The input connecting column 14 made of copper material has good electrical conductivity, which helps the components connected to the input connector 8 to conduct electricity to the input copper sheet 7.

[0046] like Figure 4-Figure 6 As shown, the output connecting column 15 is made of copper material. The end of the output connecting column 15 away from the output copper sheet 10 is plugged into the inner wall of the output connector 11. The output connecting column 15 made of copper material has good electrical conductivity, which helps the components connected to the output connector 11 to conduct electricity to the output copper sheet 10.

[0047] The specific working principle is: the input connector 8 is connected to the input device, and the input device can be connected to the input copper sheet 7 through the input connector 8 and the input connecting column 14; the output connector 11 is connected to the output device, and the output device can be connected to the output copper sheet 10 through the output connector 11 and the output connecting column 15; an open window zero point structure is used between the two resonant cavities where the input copper sheet 7 and the output copper sheet 10 are located. In actual use, the coupling between the two resonant cavities can be amplified, so that the required width of the window is reduced, and the cavity 1 can be made easier to process and control. The convex side of the capacitor flying rod support 4 The platform height can greatly change the capacitance value. At the same time, by adjusting the length of the capacitor flying rod 3, another resonance point can be obtained, thereby obtaining two zero-point forms through a capacitor structure. The boss height on the side of the capacitor flying rod support 4 is relatively low, so that it will not block the three resonant cavities at the intersection of the three resonant cavities in the cavity 1. In this way, the windows between the three resonant cavities in the cavity 1 are all opened, which can enhance the coupling. Opening all the windows between the three resonant cavities enhances the coupling, which solves the problem that the windows need to be opened to the maximum due to the strong coupling between the windows, and the two resonators need to be connected to achieve strong coupling, thereby reducing the processing difficulty of the equipment.

[0048] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. Open zeros for filters, duplexers, and combiners, characterized by: The invention comprises a cavity (1), a capacitor flying rod (3) and an input copper sheet (7), wherein a cover plate (2) is provided on the upper end of the cavity (1), a cover plate fixing screw (12) is provided on the cover plate (2), the cover plate fixing screw (12) passes through the cover plate (2) and is connected to the cavity (1) by a thread, a capacitor flying rod support member (4) is provided on one side of the middle part of the cavity (1), the capacitor flying rod (3) is provided on the upper end of the capacitor flying rod support member (4), a capacitor flying rod fixing screw (5) is provided on the middle part of the upper end of the capacitor flying rod (3), the input copper sheet (7) is provided on one side of the capacitor flying rod (3), an output copper sheet (10) is provided on the side of the capacitor flying rod (3) away from the input copper sheet (7), a tuning screw (13) is provided on the other side of the capacitor flying rod (3), and the number of the tuning screws (13) is two; An input copper sheet fixing screw (6) is provided at the upper end of the input copper sheet (7), and the input copper sheet fixing screw (6) passes through the input copper sheet (7) and is connected to the cavity (1) via a thread, and the input copper sheet (7) and the cavity (1) are connected via the input copper sheet fixing screw (6); The input copper sheet (7) is connected to an input connecting column (14) via a slot at one end away from the input copper sheet fixing screw (6); the input connecting column (14) passes through the side wall of the cavity (1); and an input connector (8) formed in the cavity (1) is provided on the periphery of one end of the input connecting column (14) passing through the side wall of the cavity (1); An output copper sheet fixing screw (9) is provided at the upper end of the output copper sheet (10), and the output copper sheet fixing screw (9) passes through the output copper sheet (10) and is connected to the cavity (1) via a thread, and the output copper sheet (10) and the cavity (1) are connected via the output copper sheet fixing screw (9); The windows between the three resonant cavities in the cavity (1) are all opened, and the height of the boss on the side of the capacitor flying rod support (4) can greatly change the capacitance value. At the same time, by adjusting the length of the capacitor flying rod (3), another resonance point can be obtained, thereby obtaining two zero point forms through a capacitor structure.

2. The open zero of the filter, duplexer, or combiner according to claim 1, wherein: The output copper sheet (10) is connected to an output connecting column (15) via a slot at one end away from the output copper sheet fixing screw (9), and the output connecting column (15) passes through the side wall of the cavity (1). An output connector (11) formed in the cavity (1) is provided on the periphery of one end of the output connecting column (15) passing through the side wall of the cavity (1).

3. The open zero of the filter, duplexer, or combiner according to claim 1, wherein: The cover plate (2) is connected to the cavity (1) via the cover plate fixing screws (12); the capacitor flying rod support member (4) is formed on one side of the middle portion of the cavity (1); and the upper end of the capacitor flying rod support member (4) is connected to the capacitor flying rod (3) via a slot.

4. The open zero of the filter, duplexer, or combiner according to claim 1, wherein: The capacitor flying rod fixing screw (5) passes through the capacitor flying rod (3) and is connected to the capacitor flying rod support (4) through a threaded connection. The capacitor flying rod fixing screw (5) clamps and fixes the capacitor flying rod (3) in a clamping groove at the upper end of the capacitor flying rod support (4).

5. The open zero of the filter, duplexer, or combiner according to claim 1, characterized in that: The capacitor flying rod fixing screw (5) is made of PEEK material, and the tuning screw (13) passes through the cover plate (2) and is connected to the cavity (1) through a thread.

6. The open zero of the filter, duplexer, or combiner according to claim 1, characterized in that: The input connecting column (14) is made of copper material, and the end of the input connecting column (14) away from the input copper sheet (7) is plugged into the inner wall of the input connector (8).

7. The open zero of the filter, duplexer, or combiner according to claim 2, wherein: The output connecting column (15) is made of copper material, and the end of the output connecting column (15) away from the output copper sheet (10) is plugged into the inner wall of the output connector (11).

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