Garnet ferrite material applied to high-power phase shifter and preparing method thereof

A technology of ferrite material and phase shifter, which is applied in the field of garnet ferrite material and its preparation, can solve the problems of increased insertion loss and large loss of phase shifter, and reduce the operating distance of phased array radar, etc., to achieve The effect of small effective line width, small porosity and high density

Inactive Publication Date: 2016-01-27
南京国睿微波器件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The loss is too large, and the insertion loss is generally around 0.8dB at room temperature
[0006] 2. The lithium ferrite material is easy to absorb moisture. In the case of high humidity, the insertion loss of the phase shifter increases, which reduces the operating distance of the phased array radar

Method used

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  • Garnet ferrite material applied to high-power phase shifter and preparing method thereof
  • Garnet ferrite material applied to high-power phase shifter and preparing method thereof
  • Garnet ferrite material applied to high-power phase shifter and preparing method thereof

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Embodiment 1

[0034] A garnet ferrite material applied to a high-power phase shifter, the ferrite material is made of ingredients in the following weight ratios:

[0035]

Embodiment 2

[0037] A method for preparing a garnet ferrite material applied to a high-power phase shifter,

[0038] 1) Weigh the ingredients according to the following weight:

[0039]

[0040] The total weight is 3019 grams.

[0041] 2) One-time ball milling: add 3019 grams of ingredients weighed in step 1) into 1800ml of distilled water and 1800ml of alcohol and put them into a ball mill for 24 hours, at a speed of 75 rpm to mix the ingredients evenly, material (g): distilled water (m1): The ratio of alcohol (m1):ball (g) is 1:0.6:0.6:2.

[0042] 3) drying: drying the ball-milled ingredients in step 2) at 95°C.

[0043] 4) Sieving: Pass the dried powder in step 3) through a 30-mesh sieve.

[0044] 5) Pre-burning: the powder obtained in step 4) is pressed figure 1 According to the pre-burning curve, heat up and keep warm, uniformly heat up from room temperature to 200°C within 2 hours, from 200°C to 1200°C within 8 hours, keep at 1200°C for 5 hours, and then cool naturally with th...

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Abstract

The invention relates to a garnet ferrite material applied to a high-power phase shifter and a preparing method thereof. The garnet ferrite material is prepared from, by weight, 35-37% of Y2O3, 13-15% of Gd2O3, 1-3% of Al2O3, 1-3% of Mn2CO3 and 45-47% of Fe2O3; the method comprises the steps of weighing and mixing according to the weight ratio, primary ball milling, drying, screening, presintering, secondary ball milling, drying, pelletizing, pressing forming and sintering. Compared with a lithium ferrite material, the garnet ferrite material prepared by utilizing the method has the advantages of being high in density, small in porosity and small in effective line width and the like.

Description

technical field [0001] The invention relates to the field of microwave ferrite materials, in particular to a garnet ferrite material applied to an S-band high-power phase shifter and a preparation method thereof. Background technique [0002] Ferrite is a metal oxide with ferromagnetic properties. In terms of electrical properties, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and it also has higher dielectric properties. The magnetic properties of ferrite are also shown to have higher magnetic permeability at high frequencies. Therefore, ferrite has become a widely used non-metallic magnetic material in the field of high frequency and weak current. Gyromagnetic ferrite refers to a ferrite material with gyromagnetic properties. The gyromagnetism of magnetic materials refers to the phenomenon that, under the action of two mutually perpendicular DC magnetic fields and electromagnetic wave magnetic fields, when a plane-polarized e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622
Inventor 翁兆平
Owner 南京国睿微波器件有限公司
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