A kind of low dielectric constant dielectric material for single-cavity filter and preparation method thereof

A technology of low dielectric constant and dielectric material, applied in the direction of waveguide type devices, circuits, electrical components, etc., can solve the problems of complex preparation method, inability to meet application requirements, quality factor and flexural strength of low dielectric constant dielectric materials, etc. , to achieve the effects of microscopic uniformity, good dimensional consistency control, and improved system stability

Active Publication Date: 2021-12-21
GUANGDONG KANGRONG HIGH TECH NEW MATERIAL CO LTD
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Problems solved by technology

[0004] However, the preparation methods in the prior art are complicated, and the quality factor and flexural strength of the obtained low dielectric constant dielectric materials cannot meet the application requirements.

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  • A kind of low dielectric constant dielectric material for single-cavity filter and preparation method thereof

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Embodiment 1-5

[0043] A low dielectric constant dielectric material for single-cavity filters, according to the mole fraction, accurately weigh 1 part of titanium dioxide, (x / 2) part of calcium carbonate, (2 / 6-x / 6) part of lanthanide oxide material, 40 parts of deionized water, added to a ball mill, and ground to D50=0.5μm, D90=1.0μm to obtain ball abrasive, which was spray-dried, then kept at 1120±30°C for 6±2h, and cooled naturally get Ca （x / 2） ln (2 / 3-x / 3) TiO 3 Crystal phase, weigh (2-z) parts of magnesium hydroxide, 1 part of anhydrous silicic acid, z parts of transition metal hydroxides, y parts of tin dioxide, m parts of Ca （x / 2） ln (2 / 3-x / 3) TiO 3 crystal phase, to obtain the batching mixture, wherein, the x, y, z, m values ​​are shown in the following table, and the batching mixture, the deionized water of 2 times the weight of the batching mixture, and the dispersant of 0.5% of the batching mixture weight are mixed at a high speed by sand milling. Evenly dispersed, the speed i...

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Abstract

The invention discloses a low-permittivity dielectric material for a single-cavity filter and a preparation method thereof. The structure of the low-permittivity dielectric material of the single-cavity filter is (1-z / 2)Mg 2 SiO 4 -(z / 2)M 2 SiO 4 -mCa （x / 2） ln (2 / 3‑x / 3) TiO 3 ‑ySnO 2 ‑(0.05~0.15)wt%AF. Preparation method of low dielectric constant dielectric material for single cavity filter, including Ca （x / 2） ln (2 / 3‑x / 3) TiO 3 Pre-preparation of crystalline phases, batching, primary grinding, spray drying, sintering, secondary grinding and spray granulation. According to the above content, the present invention proposes a low-permittivity dielectric material for a single-cavity filter and a preparation method thereof, one of the purposes of which is to provide a low-permittivity dielectric material with high quality factor and high flexural strength; The second is to provide a preparation method with simple preparation, easy-to-obtain raw materials, large-scale production and cost disclosure.

Description

technical field [0001] The invention relates to the technical field of low dielectric constant dielectric materials, in particular to a low dielectric constant dielectric material used for single-cavity filters and a preparation method thereof. Background technique [0002] With the urgent demand for ceramic filters in 5G communication, research on microwave dielectric materials has become a hot topic in recent years. Microwave dielectric ceramics refer to ceramics that are used as dielectric materials in microwave frequency circuits and perform one or more functions. They are mainly used as microwave components such as resonators, filters, dielectric antennas, and dielectric waveguide circuits. They can be used in Mobile communication, satellite communication and military radar etc. [0003] At present, there are three main systems of low-dielectric microwave dielectric ceramic materials: glass-ceramic system: using glass-ceramic or amorphous glass, such as: CaO-B 2 o 3 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C04B35/20C04B35/626C04B35/64H01B3/08H01P1/20
CPCC04B35/20C04B35/6261C04B35/62675C04B35/64H01B3/087H01P1/2002C04B2235/3234C04B2235/3293C04B2235/96C04B2235/442C04B2235/3224C04B2235/3206C04B2235/3418C04B2235/3284C04B2235/3262C04B2235/3275C04B2235/3279C04B2235/3281C04B2235/3227C04B2235/445
Inventor 谢义鹏薛伟志林小冬符仁敏
Owner GUANGDONG KANGRONG HIGH TECH NEW MATERIAL CO LTD
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