High-quality-factor microwave dielectric ceramic material and preparation method thereof

A technology of microwave dielectric ceramics and high quality factor, applied in the field of microwave dielectric materials, can solve the problems of high sintering cost and high sintering temperature, and achieve the effect of low sintering cost, low sintering temperature and simple production process

Active Publication Date: 2020-08-07
苏州威洁通讯科技有限公司
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  • Application Information

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Problems solved by technology

Chinese patent CN103641469 invented a kind of MgTiO3, CaTiO3 low-loss ceramics, the sintering temperature is 1320~1380℃, εr≈9~20 , Qf≈65000~85000GHz, τf≈±10ppm / ℃, high sintering temperature and high sintering cost

Method used

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  • High-quality-factor microwave dielectric ceramic material and preparation method thereof
  • High-quality-factor microwave dielectric ceramic material and preparation method thereof
  • High-quality-factor microwave dielectric ceramic material and preparation method thereof

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Embodiment

[0030] The microwave dielectric ceramic material with high quality factor is prepared, specifically through the following method.

[0031] The microwave dielectric ceramic material is raw material according to the following formula expression: (1-x)(Mg 1-y ,Zn)TiO 3 +xCaTiO 3 +awt%Mg 2 SiO 4 +bwt%MO;

[0032] Wherein, 0.03≤x≤0.08, 0.05≤y≤0.3, 0≤a≤15, 0≤b≤3; said a and b are respectively said Mg 2 SiO 4 and MO accounted for (1-x)(Mg 1-y ,Zn)TiO 3 +xCaTiO 3 The mass percentage; MO is a metal oxide, preferably a metal oxide MnO 2 、Al 2 o 3 , CeO 2 and Nb 2 o 5 one or more of.

[0033] The specific operation of the preparation process is as follows:

[0034] Step 1, synthesis of Mg 2 SiO 4 ; will analyze pure MgCO 3 and SiO 2 According to Mg 2 SiO 4 The stoichiometric ratio is batched to form the first batch, and according to the first batch: deionized water: zirconia ball weight ratio is 1: (2 ~ 3): (3 ~ 4) ratio, in the horizontal ball mill Mixed in the me...

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Abstract

The invention relates to the field of microwave dielectric materials, in particular to a high-quality-factor microwave dielectric ceramic material and a preparation method thereof. The microwave dielectric ceramic material comprises raw materials included in a formula expression, i.e., (1-x)(Mg<1-y>, Zn)TiO<3> + xCaTiO<3> + awt%Mg<2>SiO<4> + bwt% MO. The microwave dielectric ceramic material prepared by the method has an ultrahigh quality factor, wherein epsilon<r> is equal to 18-22, Qf is equal to 90000-100000 GHz, and tau<f> is equal to + / - 8ppm / DEG C. The microwave dielectric ceramic material disclosed by the invention is simple in preparation process, low in cost, good in reproducibility, easy for industrial production and excellent in performance, and can be widely applied to manufacturing of microwave frequency devices such as high-stability dielectric filters, duplexers, combiners and the like.

Description

technical field [0001] The invention relates to the field of microwave dielectric materials, in particular to a microwave dielectric ceramic material with high quality factor and a preparation method thereof. Background technique [0002] 5G, the fifth-generation mobile communication technology, is the development direction of the new generation of information technology and an important foundation of the digital economy. On June 6, 2019, the Ministry of Industry and Information Technology issued 5G commercial licenses to China Telecom, China Mobile, China Unicom and China Radio and Television, and my country officially entered the first year of 5G commercial use. The 5G technological change has brought about the rapid development of the RF front-end market, resulting in a substantial increase in the use of RF devices such as dielectric filters and array antennas. Compared with 4G networks, 5G has the advantages of low latency, high reliability, ultra-low power consumption,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/462C04B35/622C04B35/64
CPCC04B35/462C04B35/622C04B35/64C04B2235/3236C04B2235/3206C04B2235/3208C04B2235/3284C04B2235/3445C04B2235/3217C04B2235/3229C04B2235/3267C04B2235/3251C04B2235/656C04B2235/6567C04B2235/96Y02P40/60
Inventor 李凯李江峰王汝青
Owner 苏州威洁通讯科技有限公司
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