Preparation method of magnetic dielectric composite material dielectric resonator and miniaturized antenna

A technology of dielectric resonators and composite materials, applied in resonators, antenna grounding switch structure connection, circuits, etc., can solve the problems of antenna efficiency reduction, gain reduction, high magnetic and dielectric loss, etc., to improve performance, expand bandwidth, The effect of reducing the size of the antenna

Active Publication Date: 2022-02-25
XIAN UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

However, due to the high magnetic and dielectric loss of traditional hexagonal ferrite, the efficiency of the antenna is reduced, the gain is reduced, and it is difficult to be widely used in a wide frequency range.
At present, non-magnetic media are often combined with hexagonal ferrite to reduce the dielectric loss of the material, but this method often sacrifices the magnetic permeability of the material, which seriously affects the performance of the antenna.

Method used

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  • Preparation method of magnetic dielectric composite material dielectric resonator and miniaturized antenna
  • Preparation method of magnetic dielectric composite material dielectric resonator and miniaturized antenna
  • Preparation method of magnetic dielectric composite material dielectric resonator and miniaturized antenna

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Embodiment

[0053] A method for preparing a dielectric resonator made of magnetic and dielectric composite materials according to the present invention is specifically implemented according to the following steps:

[0054] Step 1, adopt solid-phase method to prepare Ba 3 co 2 Fe 24 o 41 Powder; specifically:

[0055] Step 1.1, will analyze the pure grade 99% BaCO 3 powder, CoO powder, Fe 2 o 3 The powder is put into a polytetrafluoroethylene ball mill jar, and absolute ethanol and zirconia beads are added to the polytetrafluoroethylene ball mill jar for ball milling. The ball milling time is 4h to 8h, and then dried at 80°C to obtain a solid mixture;

[0056] Step 1.2, sintering the solid mixture obtained after step 1.1 to obtain a sintered powder;

[0057] The sintering process is as follows: first raise the temperature to 1000°C at a rate of 5°C / min for 2 hours, then raise the temperature to 1250°C at a rate of 3°C / min and hold for 4 hours, then cool to room temperature;

[0058...

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Abstract

The invention discloses a preparation method of a magnetic dielectric composite material dielectric resonator and a miniaturized antenna, the dielectric resonator is formed by mixing spinel ferrite and hexagonal ferrite materials, the mass fraction of the spinel ferrite is 10-40%, the mass fraction of the hexagonal ferrite is 60-90%, and the sum of the mass percentages of the components is 100%. The dielectric resonator prepared by the method can be applied to a miniaturized antenna, the structure of the antenna comprises an antenna dielectric substrate, the surface of the antenna dielectric substrate is covered with a metal copper sheet, the center of the surface, connected with the metal copper sheet, of the antenna dielectric substrate is provided with a gap feed structure, and the dielectric resonator is adhered to the center of the metal copper sheet;' the miniaturized antenna is smaller in size and larger in bandwidth, and the performance of the antenna is improved.

Description

technical field [0001] The invention belongs to the technical field of antenna equipment, in particular to a method for preparing a dielectric resonator of magnetic and dielectric composite materials, and also relates to a miniaturized antenna using the dielectric resonator. Background technique [0002] With the rapid development of modern wireless communication, the research trend of wireless communication equipment tends to be miniaturized and highly integrated. Antennas play a key role in sending and receiving radio signals, directly affecting the performance and efficiency of the entire system. Therefore, the miniaturization, broadbandization and low loss of the antenna are of great significance to the whole wireless communication. Traditional metal antennas (such as microstrip patches, dipole and monopole antennas, etc.) have severe conduction loss in the millimeter wave frequency range. [0003] In recent years, novel dielectric resonant antennas (DRA) have received...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P11/00H01P7/10H01Q1/38H01Q1/50
CPCH01P11/008H01P7/10H01Q1/38H01Q1/50Y02D30/70
Inventor 何立范萍萍王颢宇席晓莉
Owner XIAN UNIV OF TECH
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