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Microstrip antenna organic composite substrate material and preparation method thereof

A composite substrate and microstrip antenna technology, which is applied in the field of inorganic/organic composite magnetic dielectric substrate materials and their preparation, can solve the problems of unusable antenna substrates, low cut-off frequency, poor flexibility, etc., so as to shorten preparation time, reduce weight and Good volume and mechanical impact resistance

Active Publication Date: 2014-12-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, these previously reported magnetic dielectric materials have a prominent problem, that is, their magnetic permeability and permittivity are relatively high. Although they can reduce the size of the antenna to a large extent, according to the Snooker's law that magnetic materials follow , the higher the magnetic permeability, the lower the cut-off frequency. Therefore, the applicable frequency of the previously reported magnetic dielectric materials is below 300MHz, and some are even only suitable for applications in the frequency band below 100MHz, and cannot be used on antenna substrates above 300MHz.
And the substrate material is made of pure ceramics with poor flexibility
For this reason, the Chinese invention patent "a microstrip antenna composite substrate material and its preparation method (ZL201110235563.5)" applied by Tang Xiaoli and Su Hua of the University of Electronic Science and Technology of China in 2011 has improved this. Oxygen is compounded with polypropylene resin to obtain a magnetic dielectric substrate material applied above 300MHz, but this method is complicated to operate and increases the cost of industrial application

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  • Microstrip antenna organic composite substrate material and preparation method thereof

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Embodiment Construction

[0025] An organic composite substrate material for a microstrip antenna, which is composed of a main phase material and an auxiliary phase material in a mass percentage ratio of 100:100. The main phase material is Co 2 Z-type hexagonal ferrite, its formula molecular formula is (Ba 0.5 Sr 0.5 ) 3 co 2 Fe 24 o 41 ; The auxiliary phase material is polytetrafluoroethylene resin.

[0026] The preparation method of the above-mentioned microstrip antenna organic composite substrate material is as follows:

[0027] Step 1: Fe 2 o 3 、BaCO 3 , SrCO 3 and Co 2 o 3 As a raw material, according to the above ferrite formula molecular formula (Ba 0.5 Sr 0.5 ) 3 co 2 Fe 24 o 41 The proportion of metal elements in the mixture is converted to the mass percentage of various oxides. After accurate weighing, it is ball milled in a planetary ball mill for 6 hours at a time. After ball milling, the material is dried in an oven at a temperature of 100°C.

[0028] Step 2: After siev...

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Abstract

The invention provides a microstrip antenna organic composite substrate material and a preparation method thereof, and belongs to the technical field of electronic materials. The organic composite substrate material is compounded from a principal phase material and an auxiliary phase material in mass percent ratio of 100:(80-120); the principal phase material is Co2Z type hexagonal ferrite with a formula molecular formula of (Ba(1-x)Srx)3Co2Fe24O41, wherein x ranges from 0 to 0.5; and the auxiliary phase material is polytetrafluoroethylene resin. The preparation method for the microstrip antenna organic composite substrate material comprises the following steps: (1) weighing, mixing and drying after carrying out primary ball-milling; (2) carrying out pre-sintering; (3) carrying out secondary ball-milling and drying; (4), compounding and drying; and (5) thermally pressing and molding. The method is simple and convenient to operate, and low in cost; the obtained composite substrate material has relatively high magnetic conductivity and a dielectric constant within a frequency range of 100 MHz-1000MHz, relatively low magnetic loss and dielectric loss; and the obtained substrate has relatively good softness and uniformity.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and relates to an inorganic / organic composite magnetic substrate material suitable for 100MHz-1GHz microstrip antenna application and a preparation method thereof. Background technique [0002] Microstrip antenna is a new type of antenna that appeared in the early 1970s. It has the advantages of small size, light weight, low profile, easy to conform to the carrier, good compatibility with integrated circuits, and easy to achieve dual-band and dual-polarization work advantages. Conventional microstrip antennas have relatively high application frequencies. In recent years, with the development of mobile communication technology, microstrip antennas in lower frequency bands (such as UHF, L, and S bands) have gradually been applied and developed. However, according to the structural design calculation formula of the microstrip antenna, the size of the substrate is proportional to the wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/18C04B35/26C04B35/622
Inventor 苏桦张天水唐晓莉张怀武荆玉兰李元勋
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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