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

Novel C-waveband miniaturized microwave isolator and application

An isolator and microwave dielectric technology, which is applied to waveguide-type devices, electrical components, circuits, etc., can solve the limitation of the miniaturization design of isolators, the inability to miniaturize microwave isolation devices, and the inability to meet the development needs of miniaturization of microwave isolators, etc. problem, to achieve the effect of solving the problem of miniaturization and high dielectric constant

Active Publication Date: 2014-04-09
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microwave circulators or isolators are mainly based on the non-reciprocity of ferrite materials under the combined action of DC bias magnetic field and microwave magnetic field, and the dielectric constant εr of microwave ferrite materials is generally between 12-15 Among them, due to the anticorrelation between the electrical size of the microwave device and the dielectric constant εr of the microwave dielectric material, its small dielectric constant severely limits the miniaturization design of the isolator, and the existing ferrite materials cannot be used for microwave isolation devices. Further miniaturization cannot meet the development needs of microwave isolator miniaturization

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
  • Novel C-waveband miniaturized microwave isolator and application
  • Novel C-waveband miniaturized microwave isolator and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Preparation of a novel ferromagnetic / ferroelectric composite material

[0028] According to the conditions in Table 2, the ferrite YAlIG-16A and modified bismuth ferrite BLFTO powder were mixed uniformly, and solid-phase sintered. Among them, YAlIG-16A ferrite was purchased from Mianyang Ximag Technology Co., Ltd., and the modified bismuth ferrite (Bi 0.87 La 0.13 )(Fe 0.92 Ti 0.08 )O 3 , Prepared by solid phase sintering method, as follows:

[0029] Raw material Bi 2 O 3 , Fe 2 O 3 , La 2 O 3 And TiO 2 According to the molar ratio, the ratio is 0.87:0.92:0.13:0.16. Calculate, weigh, crush and mix for 2 hours, dry for 1 day, press tablets, pre-fire at 680°C for 5 hours, crush and mix again, press and sinter, sinter at 880°C, hold time for 2 hours, and polish the surface.

[0030] Table 2 Sintering conditions

[0031]

Material 1

Material 2

Material 3

YAlIG-BLFTO (v / v)

1:0.8

1:1

1:1.2

Sintering temperature

920℃

920℃

920℃

Sintering time

3 hours

3 ho...

Embodiment 2

[0035] Example 2 Preparation of C-band miniaturized microwave isolator

[0036] Select the composite material in Example 1, according to the design theory of CEFay and RLComstock circulator, and design the frequency based on the electromagnetic parameters of the new composite material YAlIG-BLFTO and ferrite YAlIG-16A at room temperature 300K shown in Table 1 and Table 3. The normal temperature stripline Y-junction circulator with the range of 4.5GHz~5.5GHz, the dimensions are shown in Table 4:

[0037] Table 4 Dimensions of Y knot circulator

[0038]

Material 1

Material 2

Material 3

YAlIG-16A

Y junction strip line center conductor circle diameter

4.5mm

5mm

5.5mm

8.2mm

Microwave medium diameter

8mm

9mm

9.9mm

14.7mm

[0039] The structural diagram of the normal temperature stripline Y-junction circulator made of the above composite material is as follows figure 1 Said includes Y-junction ribbon line 1, microwave medium 2, base 3, gasket 4 and isolator port 4. Wh...

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
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a ferromagnetism / ferroelectricity composite material which comprises ferrite YA1IG-16A and modified bismuth ferrite BLFTO, and the molecular formula of the modified bismuth ferrite BLFTO is (Bi0.87La0.13) (Fe0.92Ti0.08) O3, wherein the volume ratio of the YA1IG-16A and the modified bismuth ferrite BLFTO is 1:(0.8-1.2). The invention further provides a preparation method of the ferromagnetism / ferroelectricity composite material and a C-waveband miniaturized microwave isolator manufactured through the ferromagnetism / ferroelectricity composite material. The ferromagnetism / ferroelectricity composite material can be used for aerospace, microwave communication and radar receiver systems. The bottleneck of miniaturization of microwave isolators is broken through, the novel ferromagnetism / ferroelectricity composite material has high dielectric constant, the miniaturization problem of microwave isolators can be fundamentally solved, and the ferromagnetism / ferroelectricity composite material is the key technology of miniaturization of microwave isolators.

Description

Technical field [0001] The invention belongs to the field of wireless communication, in particular to a C-band miniaturized microwave isolator based on a novel ferromagnetic / ferroelectric composite material and its application in aerospace, microwave communication and radar receiver systems. Background technique [0002] Microwave circulators or isolators made by microwave ferrite exhibiting gyromagnetic effect under the combined action of DC magnetic field and microwave radio frequency field play an important role in the inter-stage isolation and antenna sharing of the radar system, and become the key to the radar system Device. With the rapid development of 3G, 4G wireless communication technology, aerospace technology, satellite communication technology, and military radar technology, the system is also moving towards integration and miniaturization; at the same time, microwave communication systems and radar receiver systems are also moving towards multi-beam The development...

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
IPC IPC(8): H01P1/36
Inventor 刘洁于剑张林林单文磊
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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