Manufacturing method of communication base station waveguide filter

A technology of a waveguide filter and a manufacturing method, which is applied to waveguide-type devices, resonators, electrical components, etc., to achieve the effects of steep frequency characteristics, good temperature characteristics, and high Q value

Active Publication Date: 2016-08-17
江苏灿勤科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional cavity filters or dielectric cavity filters use aluminum materials such as AL6061 as the material of the cavity, which makes the realization of the dielectric cavity filter, due to the fact that aluminum is used as a metal part and a dielectric material There are serious reliability problems when soldering resonators

Method used

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  • Manufacturing method of communication base station waveguide filter
  • Manufacturing method of communication base station waveguide filter
  • Manufacturing method of communication base station waveguide filter

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Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0030] Embodiment 1~3: a kind of manufacturing method of communication base station waveguide filter, comprises cavity 1 and dielectric resonator 2, and described dielectric resonator is cylinder 4 with through hole 3; Described dielectric resonator 2 is made of following The component composition of mass percentage content is as shown in table 1:

[0031] Table 1

[0032]

[0033] One end of the dielectric resonator 2 is plated with a silver layer 5, and the other end of the dielectric resonator 2 is welded in the cavity 1;

[0034] The cavity 1 is composed of the following components in mass percentage as shown in Table 2:

[0035] Table 2

[0036]

[0037] The relative permittivity of the cavity 1 is 9.5.

[0038] The above-mentioned dielectric resonator 2 is composed of the following components in mass percentage:

[0039] 30.5% calcium carbonate with a purity of 97.5%,

[0040] Alumina 10% with a purity of 97.5%,

[0041] 23% neodymium oxide with a purity of 9...

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Abstract

The invention discloses a method for manufacturing a communication base station waveguide filter, which comprises the following steps: step 1, uniformly mixing aluminum oxide, calcium carbonate, lanthanum oxide, and samarium oxide to obtain mixed powder; step 2, mixing the mixed powder in step 1 , water and balls are mixed according to the ratio of 1:1.2:2, and after the automatic mixer is continuously stirred for 3~5 hours to mix evenly, the dried powder is obtained in the oven; step 3, the dried powder is dried in the granulation tower Powder, glue, release agent and dispersant are granulated according to the weight ratio of 100:10:2:0.7 to obtain powder particles; step 4, fully stir the powder particles, filter out the stirring balls, and set the temperature at 100°C The dried powder particles are obtained in the oven; Step 5, after the mixed powder is sprayed and granulated, it is formed into a green body with a density of 2.25~2.32g / cm³ by a hydraulic press. The invention has high Q value, small volume, adjustable temperature coefficient, high reliability of product structure, and good consistency of thermal expansion coefficient between cavity body and dielectric resonator.

Description

technical field [0001] The invention relates to a method for manufacturing a filter, belonging to the field of reciprocal microwave devices. Background technique [0002] As a frequency selection device, filters are widely used in the field of communication, especially in the field of radio frequency communication. In the base station where the communication system completes signal transmission and reception, the filter is used to select the communication signal and filter out the clutter or interference signal outside the frequency of the communication signal. In existing mobile communication base station systems, cavity filters are commonly used to select frequencies for signals transmitted and received by antennas. Traditional cavity filters or dielectric cavity filters use aluminum materials such as AL6061 as the material of the cavity, which makes the realization of the dielectric cavity filter, due to the fact that aluminum is used as a metal part and a dielectric mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P11/00H01P1/208H01P7/10
Inventor 朱田中
Owner 江苏灿勤科技股份有限公司
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