A metal filter for 5G communication technology

Abstract

The present invention discloses a metal filter for 5G communication technology, comprising a cavity, a tuning cover, a resonance rod, an adjusting screw and a nut; the cavity is a rectangular parallelepiped; the resonance rod is cylindrical, and the resonance rod is in the center of the cavity and is integrated with the cavity; a cylinder is provided at the lower end of the adjusting screw, and the diameter of the cylinder is larger than the diameter of the resonance rod; the beneficial effects of the present invention are: first, the diameter of the resonance rod can be made very small, so the space occupied is very small; second, the Q value is higher than that of the traditional implementation method, and the insertion loss performance is better; third, a larger operating space and higher operating efficiency; fourth, lighter weight than the traditional method; fifth, high feasibility of die casting and fewer defects; sixth, applicable to 5G communication technology; seventh, simple structure, easy production and low production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment, and in particular to a metal filter for 5G communication technology. Background Art

[0002] Filters have always played an extremely important role in the processing of electronic signals. They have the function of allowing useful signals to pass as smoothly as possible and attenuating useless signals as much as possible. Filters are widely used in RF, microwave and other communication fields. Among them, the traditional metal coaxial cavity filter has mature technology and is the most widely used. With the gradual and widespread application of 5G Massive MIMO technology, each 5G base station will contain about 64 filters. Considering the transportation, installation and maintenance of the base station, very high requirements are placed on the volume and weight of the filter. The traditional 3G or 4G filter implementation method will not be able to meet the volume and weight requirements. At the same time, due to the simultaneous operation of multiple channels, the energy consumption and heat dissipation pressure of the 5G base station will be very large, so the insertion loss requirements of the filter are also very high. There is an urgent need for new implementation solutions to meet these requirements of 5G filters.

[0003] At present, the traditional filter adopts the method of installing metal resonant rods, such as Figure 3 As shown, there are the following disadvantages: 1. The resonant rod needs to be installed separately, so the cost is high; 2. The material of the resonant rod is generally iron or steel, which has a much higher density than aluminum, so it is heavier; 3. The single cavity Q value is low and the insertion loss is large; 4. For filters with very small single cavities, it is difficult to assemble the filter components and the efficiency is low. Another way to achieve this is to use a resonant rod as a whole, such as Figure 4 As shown, there are the following disadvantages: 1. The diameter of the resonant rod is large, so it will affect the single-cavity Q value and the insertion loss performance is not good enough; 2. The diameter of the resonant rod is large, and for filters with very small single cavities, the frequency is not easy to achieve; 3. The top of the resonant rod is a circular ring structure, and defects such as material shortage are prone to occur during die-casting. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a filter with a rotationally tuned self-locking structure, the diameter of the resonance rod of which can be very small, so it occupies very little space; it has a higher Q value and better insertion loss performance than traditional implementation methods, and is suitable for 5G communication technology.

[0005] In order to solve the above problems, the present invention provides a metal filter for 5G communication technology, including a cavity, a tuning cover, a resonance rod, an adjusting screw and a nut; the cavity is a rectangular parallelepiped; the resonance rod is cylindrical, and the resonance rod is in the center of the cavity and is integrated with the cavity; a cylinder is provided at the lower end of the adjusting screw, and the diameter of the cylinder is larger than the diameter of the resonance rod; the tuning cover is installed on the mouth of the cavity, the adjusting screw is installed in the center of the tuning cover, and the upper end of the resonance rod just extends into the cylinder, and the nut is installed on the upper part of the adjusting screw.

[0006] Furthermore, the resonant rod is a solid cylinder.

[0007] Furthermore, the resonant rod may be configured as a separate cylinder and installed in the center of the cavity.

[0008] The present invention discloses a metal filter for 5G communication technology, comprising a cavity, a tuning cover, a resonance rod, an adjusting screw and a nut; the cavity is a rectangular parallelepiped; the resonance rod is cylindrical, and the resonance rod is in the center of the cavity and is integrated with the cavity; a cylinder is provided at the lower end of the adjusting screw, and the diameter of the cylinder is larger than the diameter of the resonance rod; the beneficial effects of the present invention are: first, the diameter of the resonance rod can be made very small, so the space occupied is very small; second, the Q value is higher than that of the traditional implementation method, and the insertion loss performance is better; third, a larger operating space and higher operating efficiency; fourth, lighter weight than the traditional method; fifth, high feasibility of die casting and fewer defects; sixth, applicable to 5G communication technology; seventh, simple structure, easy production and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the description are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0011] Figure 2 It is a structural diagram of embodiment 2 of the present invention.

[0012] Figure 3 It is a schematic diagram of the structure of a filter installed in the metal resonant rod mode.

[0013] Figure 4 It is a schematic diagram of the structure of the filter using a resonant rod integrated implementation method.

[0014] The following is a further description of the implementation, functional features and advantages of the present invention with reference to the embodiments and accompanying drawings. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Embodiment 1:

[0017] See attached Figure 1 As shown, a metal filter of 5G communication technology includes a cavity 1, a tuning cover 2, a resonance rod 3, an adjusting screw 4, and a nut 5; the cavity 1 is a rectangular parallelepiped; the resonance rod 3 is cylindrical, and the resonance rod 3 is in the center of the cavity 1 and is integrated with the cavity 1; a cylinder 41 is provided at the lower end of the adjusting screw 4, and the diameter of the cylinder 41 is larger than the diameter of the resonance rod 3; the tuning cover 2 is installed on the mouth of the cavity 1, the adjusting screw 4 is installed in the center of the tuning cover 2, and the upper end of the resonance rod 3 just extends into the cylinder 41, and the nut 5 is installed on the upper part of the adjusting screw 4.

[0018] See attached Figure 1 As shown, the resonant rod 3 is a solid cylinder.

[0019] Embodiment 2:

[0020] See attached Figure 2 As shown, the resonant rod 3 can also be set as a separate cylinder and installed in the center of the cavity 1.

[0021] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal filter for 5G communication technology, comprising a cavity (1), a tuning cover plate (2), a resonant rod (3), an adjusting screw (4), and a nut (5); characterized in that: The cavity (1) is a rectangular parallelepiped; the resonant rod (3) is cylindrical, and the resonant rod (3) is located at the center of the cavity (1) and is integrated with the cavity (1); a cylinder (41) is provided at the lower end of the adjusting screw (4), and the diameter of the cylinder (41) is larger than the diameter of the resonant rod (3); the tuning cover (2) is mounted on the opening of the cavity (1), the adjusting screw (4) is mounted at the center of the tuning cover (2), and the upper end of the resonant rod (3) just extends into the cylinder (41), and the nut (5) is mounted on the upper part of the adjusting screw (4); the resonant rod (3) is a solid cylinder.

2. According to claim 1, a metal filter for 5G communication technology, characterized in that: The resonant rod (3) may also be configured as a separate cylinder, mounted in the center of the cavity (1).

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