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Microstrip antenna composite substrate material and its preparation method

A composite substrate and microstrip antenna technology, applied in the field of composite substrate materials and their preparation, can solve the problems of low cut-off frequency and inability to use antenna substrates, and achieve the effects of reducing weight and volume, increasing bandwidth, and expanding antenna bandwidth.

Inactive Publication Date: 2012-04-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, there is a relatively prominent problem in these previously reported isomagnetic materials, that is, their magnetic permeability and permittivity are relatively high. According to the law, the higher the magnetic permeability, the lower the cutoff frequency. Therefore, the cutoff frequency of the previously reported isomagnetic materials is below 300MHz, and some are even only suitable for applications in the frequency band below 100MHz, and cannot be used for antennas above 300MHz. on the substrate

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  • Microstrip antenna composite substrate material and its preparation method
  • Microstrip antenna composite substrate material and its preparation method

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Embodiment Construction

[0025] A microstrip antenna composite substrate material is compounded by 80 parts by mass of a main phase material and 20 parts by mass of an 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 24 o 41 ; The auxiliary phase material is polypropylene resin (commercially available brand: Dushanzi Petrochemical EPS30R).

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

[0027] Step 1: Fe 2 o 3 、BaCO 3 , SrCO 3 and Co 2 o 3 As the raw material, convert the mass percentage of various oxides according to the ratio of metal elements in the above ferrite formula molecular formula. After accurate weighing, ball mill in a planetary ball mill for 4 hours at a time. After ball milling, the material is placed in an oven at 100 Dry at ℃.

[0028] Step 2: After sieving the dried material obtained in Step 1, compact ...

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Abstract

Belonging to the technical field of electronic materials, the invention relates to a microstrip antenna composite substrate material and its preparation method. The composite substrate material is formed by compounding 70-90 parts by mass of a main phase material and 10-30 parts by mass of an auxiliary phase material, wherein, the main phase material is a Co2Z hexagonal ferrite which has a molecular formula of Ba3-xSrxCo2Fe24O41 (with x located in the range of 0-1.5), and the auxiliary phase material is polypropylene resin. The preparation method consists of: 1) material weighing, mixing, first ball milling and drying; 2) presintering; 3) secondary ball milling and drying; 4) sintering; 5) tertiary ball milling and drying; 6) compounding and granulation; 7) thermoforming, etc. The composite substrate material has an isomagnetic dielectric property and low loss in a frequency scope of 300MHz-3GHz, and has certain flexibility at the same time. The preparation method in the invention is simple and easy to operate, and convenient for mastering and popularization. Employment of the composite substrate material as a microstrip antenna substrate is conducive to reduce microstrip antenna weight and volume, and is in favor of enhancing the bandwidth and radiation efficiency of microstrip antennas.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and relates to a composite substrate material suitable for 300MHz-3GHz microstrip antenna application and a preparation method thereof. Background technique [0002] The 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. 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 wavelength of the electromagnetic fie...

Claims

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Application Information

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IPC IPC(8): C04B26/04C04B35/26C04B35/63
Inventor 唐晓莉苏桦张怀武荆玉兰钟智勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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