A low dielectric constant temperature stable microwave medium and its preparation method

A temperature-stable, low-dielectric-constant technology, applied in the field of low-dielectric constant, microwave dielectric ceramics with near-zero frequency temperature coefficient and its preparation, low-dielectric constant temperature-stable microwave media and its preparation, can solve the problem of resonance Negative frequency temperature coefficient cannot meet application requirements, change dielectric constant, affect practical applications, etc.

Active Publication Date: 2020-11-24
无锡鑫圣慧龙纳米陶瓷技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mg 2 SiO 4 , Qf=73760GHz, εr=7.4, τf=-60ppm / ℃, its resonant frequency temperature coefficient is too negative to meet the application requirements
If the compound adjustment is made with a material with a relatively positive temperature coefficient of the resonant frequency, its dielectric constant will be greatly changed, and its practical application will also be affected.

Method used

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  • A low dielectric constant temperature stable microwave medium and its preparation method
  • A low dielectric constant temperature stable microwave medium and its preparation method
  • A low dielectric constant temperature stable microwave medium and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The raw material MgO and SiO with a purity of 99.9% 2 And ZrO 2 According to the molar ratio of Mg:Si:Zr as 2:1:0 ingredients, where x=0; after mixing, it is fully ball milled at 200r / min for 4h, dried at 120°C, passed through a 60-mesh sieve, and placed in a corundum crucible. Then keep it at 1050℃ for 4h to get Mg 2 SiO 4 , Its performance test is shown in Table 1.

Embodiment 2

[0032] The raw material MgO and SiO with a purity of 99.9% 2 And ZrO 2 According to the molar ratio of Mg:Si:Zr as 1.96:1:0.02 ingredients, where x=0.02; after mixing, it is fully ball milled at 200r / min for 4h. After ball milling, it is dried at 120°C, passed through a 60-mesh sieve, and placed in a corundum crucible. Then keep it at 1050℃ for 4h to get Mg 1.96 Zr 0.02 SiO 4 , Its performance test is shown in Table 1.

Embodiment 3

[0034] The raw material MgO and SiO with a purity of 99.9% 2 And ZrO 2 According to the molar ratio of Mg:Si:Zr is 1.92:1:0.04, x=0.04; after mixing, it is fully ball milled at 200r / min for 4h, dried at 120°C, passed through a 60 mesh sieve, and placed in a corundum crucible. Then keep it at 1050℃ for 4h to get Mg 1.92 Zr 0.04 SiO 4 , Its performance test is shown in Table 1.

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Abstract

The invention relates to a low dielectric constant temperature stable type microwave dielectric and a preparation method thereof, and belongs to the technical field of electronic information materials. The preparation method of the low dielectric constant temperature stable type microwave dielectric comprises the steps that firstly, Mg2-2xZrxSiO4 is prepared, wherein x is greater than or equal tozero and less than or equal to 0.1; and then Ca0.61Nd0.26TiO3 is added and sufficiently mixed, sintering is conducted, and the product of microwave dielectric ceramic with low dielectric constant, stable temperature and low loss is obtained. The temperature coefficient of resonance frequency of the material can be adjusted to be approximately zero under the premise that the dielectric constant ofthe microwave dielectric is not influenced.

Description

Technical field [0001] The invention relates to a low dielectric constant temperature stable microwave medium and a preparation method thereof, in particular to a microwave dielectric ceramic with a low dielectric constant and a frequency temperature coefficient close to zero and a preparation method thereof, belonging to the technical field of electronic information materials. Background technique [0002] With the rapid development of microwave communication and radar technology, the research of microwave dielectric resonator materials is also developing towards the high-end direction of microwave. The research of microwave dielectric resonator materials with low dielectric constant, high value and near-zero temperature coefficient of resonance frequency has attracted more and more attention. At the same time, in the field of microwave dielectric materials, exploring the mechanism of material dielectric loss and obtaining materials with high value and low loss has always been a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/20
CPCC04B35/20C04B2235/3224C04B2235/3236C04B2235/3244C04B2235/77C04B2235/96
Inventor 王丹吉岸王晓慧
Owner 无锡鑫圣慧龙纳米陶瓷技术有限公司
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