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Ferrite-base composite magnetic dielectric antenna substrate material and preparation method thereof

An antenna substrate and ferrite technology, which is applied in the field of composite magnetic dielectric antenna substrate materials and their preparation, achieves the effects of wide bandwidth, easy mastery and promotion, and low magnetic permeability

Inactive Publication Date: 2014-08-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to provide a Co 2 Composite magnetic dielectric antenna substrate material and its preparation method with Z ferrite as the matrix, solving the problems existing in the miniaturization of existing antennas

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  • Ferrite-base composite magnetic dielectric antenna substrate material and preparation method thereof
  • Ferrite-base composite magnetic dielectric antenna substrate material and preparation method thereof

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Embodiment

[0027] a Co 2 The composite magnetic antenna substrate material with Z ferrite as the matrix is ​​composed of 90% by mass of the main phase material and 10% by mass of the auxiliary phase material. The main phase material is Co 2 Z-type hexagonal ferrite, its formula molecular formula is Ba 1.5 Sr 1.5 co 2 Fe 22 o 41 ; The auxiliary phase material is polyimide resin (manufactured by Huizhi Technology Co., Ltd., PI-031 polyimide resin).

[0028] The specific preparation method of the above-mentioned composite magnetic dielectric antenna substrate material is as follows:

[0029] Step 1: Fe 2 o 3 、BaCO 3 , SrCO 3 and Co 2 o 3 As raw material, according to Co 2 Molecular formula of Z-type ferrite formula Ba 3-x Sr x co 2 Fe 24-y o 41 The proportion of metal elements in the Fe 2 o 3 、BaCO 3 , SrCO 3 and Co 2 o 3 The mass percentage of mass percentage is weighed, mixed, and dried after a ball mill for 4 hours; wherein the value of x is 1.5, and the value of ...

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Abstract

The invention discloses a ferrite-based composite magnetic dielectric antenna substrate material and a preparation method thereof, which is composed of a main phase material with a mass ratio of 85% to 90% and an auxiliary phase material with a mass ratio of 15% to 10%; The main phase material is Co2Z type hexagonal ferrite, and its molecular formula is Ba3-xSrxCo2Fe24-yO41, wherein the value range of x is 0~1.5, and the value range of y is 0~4. The auxiliary phase material is polyimide resin. The magnetic-dielectric composite substrate material provided by the present invention has lower magnetic permeability and higher dielectric constant in the frequency range of 300 MHz to 3 GHz, higher miniaturization factor, and lower magnetic loss and dielectric loss at the same time ; Better resistance to mechanical shock than conventional ceramic substrate materials. It not only helps to reduce the weight and volume of the antenna, but also improves the bandwidth of the microstrip antenna and suppresses the generation of surface waves.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and relates to a composite magnetic dielectric antenna substrate material suitable for 300MHz-3GHz antenna application and a preparation method thereof, which uses a hexagonal ferrite material as a matrix. Background technique [0002] In recent years, with the rapid development of wireless communication technology, the miniaturization of communication equipment has become an inevitable development trend. How to reduce the characteristic size of the antenna without affecting its radiation performance has become the current development of miniaturization of wireless communication equipment. The main bottleneck problem faced. We know that using high-dielectric materials as the antenna substrate can effectively reduce the characteristic size of the antenna, but simply increasing the dielectric constant to reduce the characteristic size of the antenna will not only easily excite surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/10C04B35/26C04B35/63
Inventor 荆玉兰苏桦唐晓莉张怀武钟智勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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