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A kind of microwave ceramic dielectric material, preparation method and application

A technology of microwave ceramics and dielectric materials, which is applied in waveguide-type devices, electrical components, connecting devices, etc., can solve the problems that restrict the development of microwave ceramic dielectric materials, poor signal-to-noise ratio in microwave frequency bands, and large power consumption, and achieve superior microwave performance. , high quality factor, high Q value effect

Active Publication Date: 2018-02-09
XIAMEN WANMING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the microwave ceramic dielectric materials developed and applied in China generally have low performance. The main performance is that the devices made of this microwave ceramic material have poor signal-to-noise ratio in the microwave frequency band and high power consumption. The existence of these problems seriously restricts domestic Development of Microwave Ceramic Dielectric Material Industry

Method used

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  • A kind of microwave ceramic dielectric material, preparation method and application
  • A kind of microwave ceramic dielectric material, preparation method and application
  • A kind of microwave ceramic dielectric material, preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Preparation of microwave ceramic dielectric material

[0021] Raw materials: see Table 1

[0022] Preparation method: the steps are as follows:

[0023] Step 1: Synthesis of the main crystal phase: BaCO 3 , MgO, ZrO 2 and SnO 2 Be raw material, when x=0.82, when y=0.47, according to structural formula (Ba 0.82 Mg 0.18 )(Zr 0.47 sn 0.53 )O 3 The composition of the composition is carried out batching, and the prepared mixed material is put into the ball mill jar that zirconia ball is equipped with in advance, adds deionized water, ball mills for 15 hours, and after the discharge is dried, it is pre-calcined at 1300°C for 4 hours to obtain the (Ba 0.82 Mg 0.18 )(Zr 0.47 sn 0.53 )O 3 main crystalline material.

[0024] Step 2: In the above (Ba 0.82 Mg 0.18 )(Zr 0.47 sn 0.53 )O 3 The modified dopants shown in Table 1 were added to the main crystal phase, and zirconia balls and deionized water were used as milling media for ball milling for 20 ...

Embodiment 2

[0033] Embodiment 2: Preparation of microwave ceramic dielectric material

[0034] Raw material: see table 3

[0035] Preparation method: the steps are as follows:

[0036] Step 1: Synthesis of the main crystal phase: BaCO 3 , MgO, ZrO 2 and SnO 2 Prepare ingredients for the raw materials, see Table 3 for the specific formula composition, put the prepared mixture into a ball mill tank pre-installed with zirconia balls, add deionized water, ball mill for 15 hours, and pre-calcine at 1300°C for 4 hours to obtain the main crystal phase material.

[0037] Step 2: Add the modified dopant with the same composition as shown in Table 3 to the above-mentioned main crystal phase, and use zirconia balls and deionized water as the grinding medium, and ball mill for 20 hours.

[0038] Step 3: The ball-milled slurry in step 2 is discharged and dried, then added with a PVA binder to granulate, and molded under a pressure of 20 MPa to obtain a green body.

[0039] Step 4: Set the green ...

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Abstract

The present invention discloses a microwave ceramic dielectric material, a preparation method and uses thereof. The microwave ceramic dielectric material comprises 90-99 wt% of a main crystal phase and 1-10 wt% of a modified dopant, wherein the structure formula of the main crystal phase is (BaxMg1-x)(ZrySn1-y)O3, x is more than or equal to 0.82 and is less than or equal to 0.91, y is more than or equal to 0.35 and is less than or equal to 0.55, and the modified dopant is one or a plurality of materials selected from Ta2O5, Co3O4, Al2O3, MnO2 and SiO2. According to the present invention, the microwave ceramic dielectric material has characteristics of uniform particle distribution, high quality factor, near-zero frequency temperature coefficient, and excellent microwave performance, can be used for microwave devices, and provides high-performance domestic microwave ceramic material so as to effectively reduce the dependence on the import material; and the signal-to-noise ratio of the microwave device at the microwave frequency band can be effectively improved, and the heat generation probability of the device can be reduced so as to reduce the power consumption.

Description

technical field [0001] The invention relates to the field of ceramic dielectric materials, in particular to a microwave ceramic dielectric material, a preparation method and an application. Background technique [0002] Microwave ceramic dielectric materials are the key materials of microwave devices. They are widely used in the manufacture of filters, microwave resonators, microwave antennas and duplexers. They are widely used in mobile communications, satellite communications, global satellite positioning systems (GPS), wireless Access, and Bluetooth technology and other modern microwave communication technologies have very important applications. With the development of microwave devices in the direction of miniaturization, integration, and low cost, microwave dielectric materials have attracted increasing attention, and a series of materials for various microwave frequency bands have been widely used. At present, the microwave ceramic dielectric materials developed and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/457C04B35/622H01P5/00H01P7/10H01P1/20
Inventor 黄景林黄景明
Owner XIAMEN WANMING ELECTRONICS
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