Special filter for 2. 3G (the 3rd Generation Telecommunication)

Abstract

The utility model relates to a 2.3G special filter in the field of filters. A resonant column, a first coaxial single cavity, a second coaxial single cavity, a third coaxial single cavity, a fourth coaxial single cavity, a fifth coaxial single cavity, a sixth coaxial single cavity, a seventh coaxial single cavity, an eighth coaxial single cavity, a ninth coaxial single cavity and a tenth coaxial single cavity are arranged in a cavity. A first zero point and a second zero point are formed by the second coaxial single cavity, the third coaxial single cavity and the fourth coaxial single cavity, a third zero point is formed by the seventh coaxial single cavity, the eighth coaxial single cavity and the ninth coaxial single cavity, capacitive zero points are formed among the first zero point, the second zero point and the third zero point, flying rods are installed on the capacitive zero points, a first tap is arranged in the first coaxial single cavity, and a second tap is arranged in the second coaxial single cavity. The input end of the cavity is provided with a first connector, the first connector is connected with the first tap, the top surface of the cavity is provided with a cover plate used for covering the first connector, the cover plate is provided with a plurality of adjusting rods and positioning holes, the tenth single cavity is internally provided with a second tap, and the output end of the cavity is provided with a second connector and a low pass.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to a 2.3G special filter. Background Art

[0002] A filter is a frequency-selective device that allows specific frequency components in a signal to pass through while greatly attenuating other frequency components. The frequency-selective function of the filter can be used to filter out interference noise or perform spectrum analysis. In other words, any device or system that allows specific frequency components in a signal to pass through while greatly attenuating or suppressing other frequency components is called a filter. A filter is a device that filters waves.

[0003] However, there are still some problems with the existing filters: due to their special role in the communication field, they are currently used on a large scale worldwide. There are many types of filters on the market, and their sizes vary greatly. However, those dedicated to 2.3G are relatively rare. Utility Model Content

[0004] The purpose of the utility model is to solve the above defects and provide a 2.3G special filter.

[0005] The purpose of the utility model is achieved by the following method: a 2.3G special filter, including a cavity, wherein a resonant column, a coaxial single cavity one, a coaxial single cavity two, a coaxial single cavity three, a coaxial single cavity four, a coaxial single cavity five, a coaxial single cavity six, a coaxial single cavity seven, a coaxial single cavity eight, a coaxial single cavity nine and a coaxial single cavity ten are arranged in the cavity; the coaxial single cavity two, the coaxial single cavity three and the coaxial single cavity four form zero point one and zero point two, the coaxial single cavity seven, the coaxial single cavity eight and the coaxial single cavity nine form zero point three, zero point one and zero point ten are arranged in the cavity There are capacitive zero points between zero point two and zero point three, and a flying rod is installed on the capacitive zero point. A first tap is provided in the coaxial single cavity one, and a first connector is provided at the input end of the cavity, and the first connector is connected to the first tap. A cover plate for covering the first connector is provided on the top surface of the cavity, and a plurality of adjustment rods and positioning holes are provided on the cover plate. A second tap is provided in the tenth single cavity, and a second connector and a low pass are provided at the output end of the cavity, one end of the second tap is connected to the low pass, and the other end of the second tap is connected to the resonant column.

[0006] In the above description, as a further solution, the surface of the cavity and the surface of the cover plate are both provided with a silver-plated layer.

[0007] In the above description, as a further solution, the resonant column is made of an alloy material, and the cover plate is made of an aluminum alloy material.

[0008] In the above description, as a further solution, the cavity is formed by CNC processing.

[0009] In the above description, as a further solution, a groove for placing the flying rod is provided in the cavity.

[0010] In the above description, as a further solution, the first connector is composed of an SMP connector, the second connector is composed of an N-type connector, and the second connector is connected to the cavity through a fastener.

[0011] In the above description, as a further solution, the first tap is a sheet-like structure.

[0012] In the above description, as a further solution, the adjusting rod is composed of an adjusting screw, and the positioning hole is a fastening screw hole.

[0013] In the above description, as a further solution, the upper end of the resonant column is a cylindrical structure, and the lower end of the resonant column is integrated with the cavity.

[0014] The beneficial effects produced by the utility model are as follows: the 2.3G special filter realizes the high suppression requirements of the product by installing a flying rod; the signal transmission in the utility model is realized by setting a first connector to be connected with the first tap, one end of the second tap is connected with the low pass, and the other end of the second tap is connected with the resonant column; and a plurality of adjustment rods and positioning holes are provided on the cover plate to facilitate the adjustment of the frequency and other indicators of the product, thereby ensuring the debuggability of the product indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural diagram of a 2.3G dedicated filter of the utility model;

[0016] Figure 2 This is an exploded diagram of a 2.3G dedicated filter of the utility model;

[0017] Figure 3 This is a front view of a cavity in a 2.3G dedicated filter of the utility model;

[0018] In the figure: 1-coaxial single cavity one, 2-coaxial single cavity two, 3-coaxial single cavity three, 4-coaxial single cavity four, 5-coaxial single cavity five, 6-coaxial single cavity six, 7-coaxial single cavity seven, 8-coaxial single cavity eight, 9-coaxial single cavity nine, 10-coaxial single cavity ten, A-zero point one, B-zero point two, C-zero point three, 11-flying rod, 12-first tap, 13-first connector, 14-cover plate, 15-adjusting rod, 16-positioning hole, 17-second connector, 19-groove, 20-cavity, 21-resonance column. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application 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 application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meanings of "several" and "multiple" are two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] See also Figure 1-3 A 2.3G dedicated filter is specifically implemented, including a cavity 20, in which a resonant column 21, a coaxial single cavity 1, a coaxial single cavity 2, a coaxial single cavity 3, a coaxial single cavity 4, a coaxial single cavity 5, a coaxial single cavity 6, a coaxial single cavity 7, a coaxial single cavity 8, a coaxial single cavity 9 and a coaxial single cavity 10 are arranged; the utility model adopts a coaxial cavity structure design to meet the characteristics of low loss, high suppression, high power and low intermodulation of the product.

[0022] Coaxial single cavity two 2, coaxial single cavity three 3 and coaxial single cavity four 4 form zero point one A and zero point two B, coaxial single cavity seven 7, coaxial single cavity eight 8 and coaxial single cavity nine 9 form zero point three C, zero point one A, zero point two B and zero point three C are all capacitive zero points, and a flying rod 11 is installed on the capacitive zero point, and the high suppression requirement of the product is achieved by installing the flying rod 11;

[0023] A first tap 12 is provided in the coaxial single cavity 1, and a first connector 13 is provided at the input end of the cavity 20. The first connector 13 is connected to the first tap 12. A cover plate 14 for covering the first connector 13 is provided on the top surface of the cavity 20. When the cover plate 14 is connected to the cavity 20, sealing treatment is required. A plurality of adjustment rods 15 and positioning holes 16 are provided on the cover plate 14. The cover plate 14 is used for signal shielding and is also the adjustment surface of the tuning screw.

[0024] A second tap is provided in the tenth single cavity, and a second connector 17 and a low-pass are provided at the output end of the cavity 20. A coaxial cavity design is adopted in the structural design. At the same time, a low-pass is added to the output port of the product to meet the high suppression requirements; one end of the second tap is connected to the low-pass, and the two ends of the low-pass are respectively connected to the cavity 20 and the second tap with welding points to ensure the stability of the product and improve the far-end suppression index of the present invention; the other end of the second tap is connected to the resonant column 21.

[0025] The first connector 13 is connected to the first tap 12, the second tap is located on the coaxial single cavity 10, one end of the second tap is welded on the resonant column 21, and the other end of the second tap is welded on the low pass. The first tap 12 and the second tap are connected to realize the transmission of the signal in the present invention.

[0026] Specifically, the surface of the cavity 20 and the surface of the cover plate 14 are both provided with a silver-plated layer, which improves the conductivity of the cavity 20 and the cover plate 14 and the product performance.

[0027] In this embodiment, the resonant column 21 is made of alloy material, and the resonant column 21 can be made of specific alloy material such as aluminum, copper, iron, etc. according to the temperature compensation; the cover plate 14 is made of aluminum alloy material.

[0028] In this embodiment, the cavity 20 is formed by CNC machining. The cavity 20 can also be die-cast and then CNC machined.

[0029] In this embodiment, a groove 19 for placing the flying rod 11 is provided in the cavity 20 .

[0030] In this embodiment, the first connector 13 is composed of an SMP connector, and the fixing method of the SMP connector is crimping. The SMP connector is crimped to the side of the cavity 20. The second connector 17 is composed of an N-type connector. The second connector 17 is connected to the cavity 20 through fasteners, and the fasteners are screws and other parts with fastening functions.

[0031] In this embodiment, the first tap 12 is a sheet-like structure. One end of the first tap 12 is fixed to the cavity 20 by a screw, and the other end is welded to the first connector 13.

[0032] In this embodiment, the adjustment rod 15 is composed of an adjustment screw, and the positioning hole 16 is a fastening screw hole. The frequency and other indicators of the product are adjusted by assembling the tuning screw on the cover plate 14, thereby ensuring the debuggability of the product indicators.

[0033] In this embodiment, the upper end of the resonance column 21 is a cylindrical structure, the lower end of the resonance column 21 is integrated with the cavity 20, and the resonance column 21 is split into upper and lower parts to ensure the stability of the present invention.

[0034] The above contents are further detailed descriptions of the present invention in combination with specific further embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as the protection scope of the present invention.

[0035] The resonant column is a split structure. To ensure the stability of the present invention, the resonant column adopts a split structure design. All resonant column structures of the present invention are split into upper and lower parts. The lower part of the resonant column is integrated with the cavity and the upper part is a cylindrical structure. The material can be aluminum, copper, iron and other alloy materials according to temperature compensation.

Claims

1. A 2.3G dedicated filter, comprising a cavity, characterized in that: A resonant column, coaxial single cavity one, coaxial single cavity two, coaxial single cavity three, coaxial single cavity four, coaxial single cavity five, coaxial single cavity six, coaxial single cavity seven, coaxial single cavity eight, coaxial single cavity nine and coaxial single cavity ten are arranged in the cavity; coaxial single cavity two, coaxial single cavity three and coaxial single cavity four form zero point one and zero point two, coaxial single cavity seven, coaxial single cavity eight and coaxial single cavity nine form zero point three, zero point one, zero point two and zero point three are all capacitive zero points, and a flying rod is installed on the capacitive zero point, a first tap is arranged in the coaxial single cavity one, a first connector is arranged at the input end of the cavity, the first connector is connected to the first tap, a cover plate for covering the first connector is arranged on the top surface of the cavity, a plurality of adjusting rods and positioning holes are arranged on the cover plate, a second tap is arranged in the tenth single cavity, a second connector and a low pass are arranged at the output end of the cavity, one end of the second tap is connected to the low pass, and the other end of the second tap is connected to the resonant column.

2. A 2.3G dedicated filter according to claim 1, characterized in that: The surface of the cavity and the surface of the cover plate are both provided with a silver-plated layer.

3. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: The resonant column is made of alloy material, and the cover plate is made of aluminum alloy material.

4. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: The cavity is formed by CNC machining.

5. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: A groove for placing the flying rod is provided in the cavity.

6. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: The first connector is composed of an SMP connector, the second connector is composed of an N-type connector, and the second connector is connected to the cavity through a fastener.

7. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: The first tap is a sheet-like structure.

8. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: The adjusting rod is composed of an adjusting screw, and the positioning hole is a fastening screw hole.

9. A 2.3G dedicated filter according to claim 1 or 2, characterized in that: The upper end of the resonance column is a cylindrical structure, and the lower end of the resonance column is integrated with the cavity.

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