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A New Highly Reliable Microwave Circulator for Aerospace

A circulator, a reliable technology, applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problems of unfavorable circulator design and processing, deterioration of circulator performance, and increased difficulty of assembly, so as to achieve low processing cost, avoid heat generation and breakage, The effect of increasing reliability

Active Publication Date: 2021-12-07
CHINA AEROSPACE TIMES ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a small air gap between the groove and the surface of the ferrite to avoid squeezing the ferrite, once the ferrite falls off the cavity, the performance of the circulator will deteriorate sharply or even fail to work normally
And it is necessary to strictly control the tolerance of the grooves at both ends of the medium and the assembly accuracy, resulting in increased processing costs and increased assembly difficulty, which is not conducive to the design and processing of the circulator

Method used

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  • A New Highly Reliable Microwave Circulator for Aerospace
  • A New Highly Reliable Microwave Circulator for Aerospace
  • A New Highly Reliable Microwave Circulator for Aerospace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like figure 1 , 2 As shown, a new high-reliability microwave circulator for aerospace is composed of an upper shell 1 and a lower shell 2 connected to form a circulator shell. There is a matching structure 3 on one end surface of the upper casing 1 for adjusting microwave performance. The matching structure 3 includes a Y-shaped boss and a cylindrical boss, which are integrally formed with the upper casing 1 and used for adjusting microwave parameters. The top-spinning ferrite 4 is fixed on the cylindrical boss of the matching structure 3 by using an adhesive acetal glue. The lower casing 2 and the down-spin ferrite 5 perform the same operation.

[0030] Place the lower housing 2 on the platform, and the dielectric ring 6 is set on the cylindrical boss of the matching structure 3 and the periphery of the down-spin ferrite 5. The inner radius of the dielectric ring 6 is determined by the cylindrical matching structure and the radius of the ferrite. It is 0.03mm-0.05m...

Embodiment 2

[0034] like image 3 , 4 As shown, the boss of the matching structure 3 is a triangular boss with tuning posts for adjusting microwave performance. The dielectric ring 6 is sleeved on the periphery of the ferrite, and is fixed on the triangular boss by extrusion when one end of the installation matching structure 3 of the upper shell 1 and the lower shell 2 is fixedly connected.

Embodiment 3

[0036] like Figure 5 As shown, after the upper shell 1 and the lower shell 2 are connected by screws, a permanent magnet fixing part 9 is installed outside. The permanent magnet fixing part 9 is a U-shaped structure, and is connected with the housing by screws. The permanent magnet fixing part 9 is made of electromagnetic pure iron material, has good magnetic permeability, and forms a closed magnetic circuit with the permanent magnet 8, which can reduce the magnetic leakage of the circulator and reduce the impact on surrounding devices.

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Abstract

The utility model relates to a high-reliability novel microwave circulator for aerospace, which belongs to the technical field of microwave isolators. The invention includes an upper shell, a lower shell, a matching structure, an up-rotating ferrite, a down-rotating ferrite, a medium ring, a medium spring and a permanent magnet. The matching structure is fixed on the inner side of the upper shell and the lower shell; the upper-spin ferrite and the lower-spin ferrite are respectively fixed on the matching structure of the upper shell and the lower shell with adhesives; the dielectric ring is installed on the upper-spin On the ferrite and the matching structure; the medium spring is located in the medium ring, between the two rotating ferrites; the permanent magnet is installed above the ferrite at the other end of the upper shell and the lower shell. The microwave circulator of the present invention has good microwave performance, and the withstand power can reach the kW level. At the same time, the dielectric ring can assist in positioning the up-rotating ferrite and the down-rotating ferrite, and the dielectric spring supports the up-rotating ferrite and the down-rotating ferrite. The structure is stable and reliable, and the difficulty of processing and assembly is low.

Description

technical field [0001] The invention relates to a microwave and radio frequency component, in particular to a novel high-reliability microwave circulator for aerospace, belonging to the technical field of microwave isolators. Background technique [0002] Microwave circulator is an anisotropic element, which has very important applications in microwave and radio frequency fields. The circulator can be connected behind the power source to protect the power source by using its unidirectional transmission characteristics, and can also be used as a transceiver switch to effectively isolate the transceiver path and ensure the normal operation of the link. The circulators used in the aerospace environment are required to be able to withstand high power and ensure reliability. [0003] Adding an insulating medium in the cavity of the circulator can hinder the movement of electrons, reduce the number of secondary electrons, suppress the occurrence of micro-discharge, and improve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/38
Inventor 李心怡蔡立兵张军傲相东苌群峰李刚
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP