Low-temperature co-fired ceramic material for millimeter wave antenna module and preparation method of low-temperature co-fired ceramic material

A low-temperature co-fired ceramic and millimeter-wave antenna technology, applied in the field of electronic ceramic materials and their manufacturing, can solve the problems of limited production and application, high process sintering temperature, large dielectric loss, etc., to ensure low temperature performance and operability. , Solve the effect of high sintering temperature and slightly poor compactness

Active Publication Date: 2022-07-01
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As disclosed in Chinese patent CN105347781A, the main crystal phase Mg 2 SiO 4 and doped phase silicate glass, Al 2 o 3 , ZnO, La 2 o 3 The material is sintered at 1300°C through ball milling, pre-calcination, dry pressing and other processes to make a magnetic density of 2.8g / cm 3 1. Ceramic materials with a dielectric constant of about 6.9, although their dielectric constant meets the general application requirements; however, the sintering temperature of the entire process is too high, and it cannot be co-fired with silver paste, which limits the actual production and application
Another example is the high-frequency low-loss LTCC material synthesized in Chinese patent CN11170741A, which consists of La 2 o 3 -B 2 o 3 -CaO glass-ceramics and LaBO 3 The composition is obtained after sintering at 950°C for 2 hours. The dielectric constant of the obtained material is about 9, and the dielectric loss is 2.91×10 -3 , the quality factor is around 6000; although the performance of the product has been optimized, the sintering temperature of the process is high, and it cannot be co-fired with silver paste, and the dielectric loss is still relatively large

Method used

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  • Low-temperature co-fired ceramic material for millimeter wave antenna module and preparation method of low-temperature co-fired ceramic material
  • Low-temperature co-fired ceramic material for millimeter wave antenna module and preparation method of low-temperature co-fired ceramic material
  • Low-temperature co-fired ceramic material for millimeter wave antenna module and preparation method of low-temperature co-fired ceramic material

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preparation example

[0048] In the following examples of the present invention, the types of low K value and low melting point glass powder involved, the content range value and actual addition amount of each raw material component in the glass powder are shown in Table 1 below.

[0049] According to the mass percentages recorded in the following table 1, the ingredients of the selected ingredients are respectively mixed, and the selected raw materials are blended, melted at high temperature into glass melt, and rolled into sheet glass after cooling, and then rolled into coarse glass through ceramics. Glass, and then through dry pulverization and jet pulverization, the coarse glass is made into low K value and low melting point glass powder of the required components, and is ready for use.

[0050] Components, mass percentages and properties of glass powders described in Table 1

[0051]

Embodiment 1

[0053] The method for preparing a low-temperature co-fired ceramic substrate for a millimeter-wave antenna module described in this embodiment includes the following steps:

[0054] (1) According to Mg 2 SiO 4 The content ratio of 80wt% and low K value and low melting point glass powder of 20wt%, take the Mg 2 SiO 4 and ZnO-SiO 2 -Al 2 O 3 The glass powder (A) is mixed, and water and zirconia balls are added in the ratio of the mass ratio of water: zirconia balls to 1:1.5:3, the diameter of the zirconia balls is controlled to be 1.5mm, and the ball milling speed is controlled to be 300r / min, carry out ball milling for 5 hours, and then dry at 180°C for 3 hours to complete drying, then sieve with an 80-mesh sieve to obtain formula powder, which is for later use;

[0055] (2) The obtained formula powder is made into slurry, and the slurry is made into a green ceramic tape by casting, and then the green ceramic tape is controlled to a heating rate of 3° C. / min in an air a...

Embodiment 2

[0057] The method for preparing a low-temperature co-fired ceramic substrate for a millimeter-wave antenna module described in this embodiment includes the following steps:

[0058] (1) According to Mg 2 SiO 4 The content ratio of 80wt% and low K value and low melting point glass powder of 20wt%, take the Mg 2 SiO 4 and BaO-ZnO-Al 2 O 3 -CaO(B) is mixed, and water and zirconia balls are added in the ratio of the mass ratio of water: zirconia balls to 1:1.5:3, the diameter of the zirconia balls is controlled to be 1.5mm, and the ball milling speed is controlled to be 320r / min, perform ball milling for 4 hours, and then dry at 150°C for 6 hours to complete drying, then sieve with an 80-mesh sieve to obtain formula powder for use;

[0059] (2) The obtained formula powder is made into slurry, and the slurry is made into a green ceramic tape by casting, and then the green ceramic tape is controlled to a heating rate of 3° C. / min in an air atmosphere, and the temperature is r...

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Abstract

The invention relates to the technical field of electronic ceramic materials and manufacturing thereof, in particular to a low-temperature co-fired ceramic material for a millimeter wave antenna module and further discloses a preparation method of the low-temperature co-fired ceramic material. According to the low-temperature co-fired ceramic material for the millimeter wave antenna module, Mg2SiO4 serves as a base material, low-K-value and low-melting-point glass powder is added to form the low-temperature co-fired ceramic material for the millimeter wave antenna module, the dielectric constant of a formed and sintered diaphragm is 7 +/-0.2 and the dielectric loss lt at the room temperature and the testing frequency of 20 GHz through an SPDR testing method; 4 * 10 <-3 >; the temperature drift is within +/-10ppm/DEG C within the temperature range of-40 DEG C to 110 DEG C and under the test frequency of 20GHz; in addition, the bending strength of the low-temperature co-fired ceramic material is gt; and the millimeter wave antenna module can be used as a millimeter wave antenna module in 5G communication.

Description

technical field [0001] The invention relates to the technical field of electronic ceramic materials and their manufacture, in particular to a low-temperature co-fired ceramic material for a millimeter-wave antenna module, and further discloses a preparation method thereof. Background technique [0002] In recent years, driven by the rapid development of semiconductor technology, electronic components continue to develop in the direction of miniaturization, integration and high frequency. Selecting appropriate ceramics that can co-fire with conductive materials such as silver at a low temperature of not more than 900 °C, so as to make multi-layer components or bury passive devices in multi-layer circuit substrates, has become an inevitable requirement of the above trend. Low-temperature co-fired ceramics, which are the main dielectric materials of source integrated components, have also become an important development trend. Low Temperature Co-fired Ceramic (LTCC) materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/20
CPCC04B35/20C04B2235/36C04B2235/96C04B2235/6567C04B2235/6562
Inventor 朱恒闫鑫升艾辽东刘振锋奚洪亮宋锡滨
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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