Metal filter of 5G communication technology

Abstract

The invention discloses a metal filter of a 5G communication technology. The metal filter comprises a cavity, a tuning cover plate, a resonance rod, an adjusting screw rod and a nut. The cavity is a cuboid; the resonance rod is cylindrical, and the resonance rod is arranged in a center in the cavity and is integrated with the cavity; and a cylinder is arranged at a lower end of the adjusting screwrod, and a diameter of the cylinder is greater than that of the resonance rod. The filter has advantages that 1, the diameter of the resonance rod can be very small so that an occupied space is verysmall; 2, compared with a traditional implementation mode, by using the filter of the invention, a Q value is higher, and insertion loss performance is better; 3, an operation space is larger, and operation efficiency is higher; 4, weight is lighter than that of a traditional mode; 5, die-casting realizability is high, and defects are fewer; 6, the filter is suitable for a 5G communication technology; and 7, the structure is simple, production is easy, and production cost is low.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a metal filter for 5G communication technology. Background technique [0002] The filter has always played an extremely important role in the processing of electronic signals. It has the function of allowing useful signals to pass through as much as possible without attenuation, and attenuating useless signals as much as possible. Filters are widely used in radio frequency, microwave and other communication fields, among which 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 size and weight of the filter. Traditional 3G or 4G filter implementations will not meet the size a...

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional filter adopts the method of installing metal resonant rods such as image 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, and its density is much higher than that of aluminum, so the weight is higher; 3. The Q value of the single cavity is relatively low. Low, large insertion loss; 4. For a filter with a small single cavity, the parts for assembling the filter are not easy to operate and the efficiency is low

Another way to realize the integration of resonant rods is as follows: Figure 4 As shown, there are the following disadvantages: 1. The diameter of the resonant rod is large, so it will affect the Q value of the single cavity, and the insertion loss performance is not good enough; 2. The diameter of the resonant rod is large, and the frequency is not easy to achieve for a filter with a small single cavity; 3. The top of the resonant rod is a ring structure, which is prone to defects such as lack of material during die-casting

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