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Mediated high-Q microwave medium material for mobile communication and preparation method of mediated high-Q microwave medium material

A microwave dielectric material and mobile communication technology, applied in the field of electronic ceramic materials, can solve the problems of high price, high sintering temperature, and unstable price of rare earth raw materials

Inactive Publication Date: 2015-01-07
武汉凡谷陶瓷材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the microwave dielectric materials that can meet the requirements of practical applications and have been commercialized mainly include LnAlO 3 -CaTiO 3 system, ZrTiO 4 -ZnNb 2 o 6 Department, Ba(Mg 1 / 3 Ta 2 / 3 )O 3 (BMT), Ba(Zn 1 / 3 Ta 2 / 3 )O 3 (BZT) and Zr-Ti-Sn-O series, etc., among these materials, LnAlO 3 -CaTiO 3 Although the sintering temperature of the series is low, the Q f The value cannot fully meet the development needs of the industry, and the price of some rare earth raw materials is unstable; Zr-Ti-Sn-O series and ZrTiO 4 -ZnNb 2 o 6 Department of Q f Although high, the dielectric constant is small; the Q of BMT and BZT f Although higher, the raw material Ta used 2 o 5 Expensive, high sintering temperature

Method used

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  • Mediated high-Q microwave medium material for mobile communication and preparation method of mediated high-Q microwave medium material
  • Mediated high-Q microwave medium material for mobile communication and preparation method of mediated high-Q microwave medium material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Accurately weigh CaCO with a purity greater than 99.95% 3 0.11mol, BaCO 3 0.008mol, La 2 o 3 0.19mol, Sm 2 o 3 0.012mol and TiO 2 0.42mol, pour it into a resin ball mill tank, add deionized water and zirconium balls; the weight ratio of the three is: material: balls: deionized water = 1:2:1.5; ball mill in a ball mill for 24 hours to ensure uniform mixing ;After discharging, put the slurry into the oven, and dry it at 120°C to obtain the dried powder;

[0033] (2) Pass the dried powder through a 40-mesh sieve, then calcinate at 1200°C for 3 hours, and cool with the furnace to obtain a ceramic powder;

[0034] (3) Dissolve 1wt / % chemically pure magnesium alkoxide (Mg) and 1.5wt / % chemically pure zinc alkoxide (Zn) in dehydrated ethanol, add an appropriate amount of diethanolamine and mix well, then add deionized water , through hydrolysis, polycondensation reaction, and then forming a gel to prepare nano-scale liquid-phase Mg additives and Zn additives with a ...

Embodiment 2

[0038] CaCO 3 0.108mol, SrCO3 0.008mol, La 2 o 3 0.192mol, Sm 2 o 3 0.0102mol, Dy 2 o 3 0.008mol, TiO 2 0.418 mol, 2 wt / % magnesium alkoxide (Mg) and 1 wt / % nickel alkoxide (Ni). The preparation method is the same as that of Example 1, and microwave dielectric material 2 is obtained.

Embodiment 3

[0040] CaCO 3 0.118mol, La 2 o 3 0.194mol, Eu 2 o 3 0.0122mol, TiO 2 0.420 mol, 1.5 wt / % magnesium alkoxide (Mg) and 1 wt / % tin alkoxide (Sn). The preparation method is the same as that of Example 1, and microwave dielectric material 3 is obtained.

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Abstract

The invention provides a mediated high-Q microwave medium material for mobile communication. The mediated high-Q microwave medium material comprises x MO-y Ln2O3-z TiO2 and a nano-sized metal additive, wherein M comprises Ca, and one or two of Ba or Sr; Ln comprises La, and one or more of Sm, Dy, Nd, Er or Eu; the nano-sized metal additive comprises Mg, and one or more of Zr, Sn, Zn, Ni, Co or W; and x+y+z is equal to 1. The invention also provides a preparation method of the microwave medium material. The microwave medium material disclosed by the invention has a dielectric constant being 44-46, and simultaneously has a relatively high quality factor being 40,000-52,000GHz; and the temperature coefficient of resonance frequency is adjustable within the range of -12ppm / DEG C to +12ppm / DEG C.

Description

technical field [0001] The invention relates to the field of special electronic ceramic materials, in particular to an intermediate high-Q microwave dielectric material for mobile communication and a preparation method thereof. Background technique [0002] With the rapid development of the microwave communication industry, the research work of microwave dielectric materials has been paid more and more attention. In order to meet the requirements that microwave resonators and filters used in 3G and 4G base stations must have good frequency selection characteristics, bandwidth, miniaturization and low cost, the corresponding microwave dielectric ceramic materials must also have (1) a suitable dielectric Constant (30-60), (2) high quality factor (Q f ≥40000GHz), (3) nearly zero adjustable resonant frequency temperature coefficient, (4) low production cost and easy mass production. [0003] At present, the microwave dielectric materials that can meet the requirements of pract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/50C04B35/622
Inventor 李儒钟伟刚
Owner 武汉凡谷陶瓷材料有限公司
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