Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ceramic material, preparation method thereof, resonator, filter, and radio remote equipment

A cavity filter and ceramic powder technology, which is applied in the field of dielectric resonators, can solve the problems of poor dielectric properties and uneven density of microwave dielectric ceramics, and achieve the effects of good dielectric properties, stability and high dimensional accuracy.

Active Publication Date: 2016-07-06
ANHUI TATFOOK TECH CO LTD
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The embodiment of the present invention provides a kind of BaTi 4 o 9 A microwave-based dielectric ceramic material resonator and a preparation method thereof, to solve the problem of uneven density of microwave dielectric ceramics produced by dry pressing in the prior art, resulting in poor dielectric properties of resonators made of the microwave dielectric ceramics technical problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ceramic material, preparation method thereof, resonator, filter, and radio remote equipment
  • Ceramic material, preparation method thereof, resonator, filter, and radio remote equipment
  • Ceramic material, preparation method thereof, resonator, filter, and radio remote equipment

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] see figure 2 , figure 2 It is BaTi of the present invention 4 o 9 A schematic flow diagram of a preferred embodiment of a preparation method of a microwave-based dielectric ceramic material; the preparation method includes but is not limited to the following steps:

[0049] Step S100, preparing a mixture. The mixture contains at least BaTi 4 o 9 Base ceramic powder and organic binder.

[0050] In this example, the BaTi 4 o 9 The base ceramic powder and organic binder are mixed on a mixer until they are evenly mixed. The preferred mixing time is 4 to 8 hours to obtain an injection molding mixture. The content of different components in the mixture is related to the particle size, shape, and density of the powder. Relevant, so its mixture formula of different powders is different; For BaTi in the present invention 4 o 9 Base dielectric ceramics, in injection molding compounds, BaTi 4 o 9 The weight percentage of the base ceramic powder is preferably 76-85%, ...

Embodiment 1

[0066] The present embodiment main material formula adopts chemical formula: BaTi 4 o 9 +0.5mol%MoO 3 For the chemical composition, compare the properties of the dielectric resonators prepared by the dry pressing method and the injection molding method respectively. The dielectric properties of the main material itself in this embodiment are relative dielectric constant ε r is 37, the quality factor (Q×f) is 45000GHz, and the resonant frequency temperature coefficient τ f It is +5ppm / ℃. Preparation of BaTi by Injection Molding Process 4 o 9 The base dielectric resonator is realized through the following process steps:

[0067] (1) Mixing ceramic powder and organic binder: BaTi 4 o 9 The base ceramic powder and organic binder are evenly mixed to obtain an injection molding mixture. The content of different components in the mixture is related to the particle size, shape and density of the powder, so different powders have different mixture formulas; for BaTi 4 o 9 base...

Embodiment 2

[0078] The present embodiment main material formula adopts chemical formula: BaTi 4 o 9 +5mol%MoO 3 For the chemical composition, compare the properties of the dielectric resonators prepared by the dry pressing method and the injection molding method respectively. The dielectric properties of the main material itself in this embodiment are relative dielectric constant ε r is 36.4, the quality factor (Q×f) value is 53050GHz, and the resonant frequency temperature coefficient τ f It is +2ppm / ℃. Preparation of BaTi by Injection Molding Process 4 o 9 The base dielectric resonator is realized through the following process steps:

[0079] (1) Mixing ceramic powder and organic binder: in the injection molding mixture of this embodiment, BaTi 4 o 9 The weight percentage of the base ceramic powder is 76%, the weight percentage of the organic binder is 24%; the weight percentage of each component in the organic binder is 80% of the binder; 5% of the surfactant ; Low-melting poin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality factoraaaaaaaaaa
resonant frequency temperature coefficientaaaaaaaaaa
quality factoraaaaaaaaaa
Login to View More

Abstract

The invention provides a BaTi4O9 base microwave medium ceramic material, a preparation method thereof, a resonator, a filter, and radio remote equipment. The preparation method of the medium ceramic material comprises the following steps: preparing a mixed material, which at least comprises BaTi4O9 base ceramic powder and an organic adhesive; subjecting the mixed material to an injection moulding treatment to obtain a blank; subjecting the blank to non-polar solvent extraction degreasing and thermal degreasing in sequence; and after thermal degreasing, sintering the blank to obtain the BaTi4O9 base microwave medium ceramic. According to the preparation method, an injection moulding technology is used to obtain the medium ceramic material, which has the advantages of uniform density and size distribution, and high size precision after sintering, moreover, the material cost is low, and the preparation technology is simple. Compared with the resonator prepared through a dry pressing technology, the provided resonator has a higher quality factor (Q*f) value and more stable property.

Description

technical field [0001] The invention relates to the technical field of dielectric resonators, in particular to a microwave dielectric ceramic material and a preparation method thereof, a resonator, a cavity filter and radio remote equipment. Background technique [0002] Dielectric resonators are the most basic microwave components. Dielectric resonators can be used to form microwave circuits such as filters, oscillators and antennas. They are widely used in mobile communications, satellite communications, military radars, global positioning systems, Bluetooth technology, wireless local area networks, etc. In modern communication, it is the key basic device of modern communication technology. Dielectric resonators used in microwave circuits, in addition to the necessary mechanical strength, also need to meet the following dielectric performance requirements: (1) have a relatively high dielectric constant ε at microwave frequencies r , the general requirement ε r >20, in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468
CPCC04B35/468C04B2235/3208C04B2235/3213C04B2235/3244C04B2235/3251C04B2235/3256C04B2235/3258C04B2235/3267C04B2235/3284C04B2235/3293C04B2235/3296C04B2235/3409
Inventor 庄后荣陆正武
Owner ANHUI TATFOOK TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com