Microwave ferrite material for third-order intermodulation circulator and preparation method thereof

A ferrite material, third-order intermodulation technology, which is applied in the manufacture of inductors/transformers/magnets, magnetic materials, inorganic materials, etc. It can solve the problems of deterioration of communication system performance, affecting network coverage and capacity, and reducing Loss of the device, optimized sintering process, good repeatability

Pending Publication Date: 2022-02-11
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Intermodulation interference is one of the typical interference phenomena, which will lead to the deterioration of the performance of the communication system and seriously affect the coverage and capacity of the network

Method used

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  • Microwave ferrite material for third-order intermodulation circulator and preparation method thereof
  • Microwave ferrite material for third-order intermodulation circulator and preparation method thereof
  • Microwave ferrite material for third-order intermodulation circulator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] This embodiment provides a microwave ferrite material for a third-order intermodulation circulator and a preparation method thereof, and the preparation method includes the following steps:

[0086] (1) Weighing: According to the composition chemical formula of microwave ferrite material is Y 3-a Ca a sn a In b mn c Fe 5-a-b-c o 12 (a=0.27, b=0.01, c=0.05) Weigh the corresponding raw materials, where Y 2 o 3 The purity is 99.95%, CaCO 3 The purity is 99.5%, SnO 2 The purity is 99.5%, In 2 o 3 The purity is 99.99%, MnCO 3 The purity is 99%, Fe 2 o 3 The purity is 99.5%;

[0087] (2) One-time ball milling: Pour the raw materials weighed in step (1) into a ball mill tank and mix them with a ball mill. According to the mass ratio, raw materials: deionized water: zirconia balls = 1:1:6, and add acetone as a dispersion dispersant, the rotating speed of ball milling is 60rpm, the time is 35h, and the first slurry is obtained after ball milling; the mass proporti...

Embodiment 2

[0094] This embodiment provides a microwave ferrite material for a third-order intermodulation circulator and a preparation method thereof, except that the composition chemical formula of the microwave ferrite material is Y 3-a Ca a sn a In b mn c Fe 5-a-b-c o 12 (a=0.26, b=0.01, c=0.02), and change the concentration of co-solvent in step (4) in the second slurry to 100ppm in the preparation method, and the rest of the conditions are the same as in Example 1, so in I won't go into details here.

Embodiment 3

[0096]This embodiment provides a microwave ferrite material for a third-order intermodulation circulator and its preparation method, except that the temperature of the third sintering in step (6) in the preparation method is changed to 1510°C, and the other conditions are the same as those in Embodiment 1. are the same, so I won’t repeat them here.

[0097] The sintered crystal image of the microwave ferrite material obtained in this embodiment is shown in figure 2 .

[0098] Depend on figure 2 It can be seen that compared with Example 1, the third sintering temperature of this example is too high, resulting in more defects on the crystal surface of the obtained microwave ferrite material.

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Abstract

The invention provides a microwave ferrite material for a third-order intermodulation circulator and a preparation method thereof, the chemical formula of the microwave ferrite material is Y3-aCaaSnaInbMncFe5-a-b-cO12, 0.1 < = a < = 0.3, 0.01 < = b < = 0.1, and 0.001 < = c < = 0.1. The preparation method comprises the following steps: (1) weighing; (2) primary ball milling; (3) drying and preheating; (4) secondary ball milling; (5) granulating; and (6) post-treatment. According to the microwave ferrite material provided by the invention, intermodulation interference between combined signals is reduced, the performance of a communication system and the coverage capability and capacity of a network are further improved, meanwhile, the stability and repeatability of a preparation process are maintained at a good level, and the microwave ferrite material is suitable for large-scale production and application.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials and relates to a microwave ferrite material, in particular to a microwave ferrite material for a third-order intermodulation circulator and a preparation method thereof. Background technique [0002] In the deployment process of the communication network, in order to save costs, a large number of different operators may share the base station network system. Since operators use different communication technologies and the system has non-linear factors, there will be interference between combined signals. Intermodulation interference is one of the typical interference phenomena, which will lead to the deterioration of communication system performance and seriously affect the coverage and capacity of the network. There are many factors that affect intermodulation interference. In addition to improving the indicators of active and passive equipment on the original basis, it is also necess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622H01F1/03H01F1/34H01F41/02H01P1/38
CPCC04B35/2633C04B35/2641C04B35/622H01F1/0315H01F1/344H01P1/38H01F41/02C04B2235/3225C04B2235/3208C04B2235/3286C04B2235/3293C04B2235/3262C04B2235/608C04B2235/6562C04B2235/6565C04B2235/6583C04B2235/77
Inventor 吕飞雨王媛珍张利康
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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