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Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same

A microwave cavity and optimization method technology, applied in the field of radio frequency microwave, can solve problems affecting circuit design, circuit layout changes, restrictions, etc., to achieve the effects of optimizing performance, convenient and flexible use, and improving component stability

Inactive Publication Date: 2016-03-30
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Method 1 and method 2 can well realize the optimal design of component stability, but the change of cavity structure will change the layout of the internal circuit of the component, which will affect the circuit design
In the design of miniaturized components with strict structural dimensions and compact circuit layout, the use of methods 1 and 2 is limited
Method 3 can optimize the stability of microwave components to a certain extent, but it can only weaken but it is difficult to fundamentally solve the influence of cavity effect on component stability

Method used

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  • Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same
  • Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same
  • Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] see image 3 Furthermore, a rectangular boss 3 is provided under the cover plate 2. The planar size of the boss 3 is 23mm*8mm, and the thickness is 5mm. The distance between them is 8mm, and the distance between 6.5mm and 6.5mm is greater than 0.1mm. The distance between the boss 3 and the bottom surface of the cavity is 3 mm, ensuring that the distance between the bottom surface of the boss 3 and the top surface of the components in the box body 1 is not less than 0.1 mm. The boss is placed for the purpose of destroying figure 2 The field distribution of the resonant mode shown.

[0069] will have image 3 The shown rectangular microwave cavity of the boss 3 cover is modeled and simulated in HFSS to obtain its resonance mode. The simulation results show that the resonant frequency points are all outside the working frequency band, and the closest resonant points to the working frequency band are f=12.17GHz and f=7.95GHz, which ensures that there is no resonant mod...

Embodiment 2

[0077] see Figure 7 , further speaking, two longitudinally parallel square bosses 3 are provided under the cover plate 2 . The size of the boss 3 is 6mm*6mm, and the thickness is 8mm. As shown in the figure, the distance between the side of each boss 3 and the inner wall of the adjacent box body 1 is not less than 0.1mm. The distance between the bottom surface of the boss 3 and the top surface of the components in the box body 1 is not less than 0.1 mm. The distance between the bosses 3 is not less than 0.1mm. The microwave cavity with the cover plate of this structure is modeled and simulated in HFSS, and the resonance points closest to the working frequency band can be obtained as f=13.35GHz and f=8.69GHz. Because the increase of the boss changes the effective values ​​of a, b, and d, which destroys the field distribution inside the cavity, and there is no resonance frequency point in the X-band range.

[0078] see Figure 8 ,Will Figure 7The thickness of the upper bo...

Embodiment 3

[0084] see Figure 13 , further speaking, three bosses 3 are provided under the cover plate 2 . Two cylindrical bosses with a diameter of 3mm and a thickness of 7mm and a rectangular boss of 10mm*5.5mm and a thickness of 7mm. The position of the boss is as Figure 13 As shown, the distance between the side of each boss 3 and the inner wall of the adjacent box body 1 is not less than 0.1 mm. The distance between the bottom surface of the boss 3 and the top surface of the components in the box body 1 is not less than 0.1mm. The distance between the bosses 3 is not less than 0.1mm.

[0085] The microwave cavity with the cover plate of this structure is modeled and simulated in HFSS, and the resonance points closest to the working frequency band are f=12.38GHz and f=6.7GHz, and there is no resonance point in the working frequency band, which achieves the expected effect.

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Abstract

The invention provides a microwave cavity stability optimization method independent of a circuit and a miniaturization microwave assembly obtained based on the same. The microwave cavity stability optimization method is independent of the structural form and layout of the internal circuit of the microwave cavity; and the stability of the microwave cavity is improved by optimizing the resonance mode of the cavity. In addition, the miniaturization microwave assembly obtained based on the microwave cavity stability optimization method comprises a box body and a cover plate; and a boss is arranged below the cover plate. The length, width, and height of the cavity of the box body are a, b, and c and the length, width, and height of the boss are at, bt, and ct, wherein the at / a is larger than 0 and is smaller than 1, the bt / b is larger than 0 and is smaller than 1, the ct / c is larger than 0 and is smaller than 1. The microwave cavity stability optimization method and the miniaturization microwave assembly have the following beneficial effects: on the basis of the designed cover plate structural form, the Q value of the cavity is reduced and the resonant frequency of the cavity is beyond the working band; the cavity mode optimization is realized by uing the cavity space fully; and the assembly stability is improved.

Description

technical field [0001] The invention belongs to the field of radio-frequency microwave technology, and in particular relates to a method for optimizing the stability of a microwave cavity independent of a circuit and a miniaturized microwave component obtained based on the method. Background technique [0002] Phased array radar is widely used because of its advantages of phase scanning, flexible beam pointing, high data rate, simultaneous formation of multiple independent beams, and tasks such as search, tracking, guidance, identification, and passive detection. With the continuous development of science and technology and the diversified needs of modern warfare, the requirements for phased array radar indicators are becoming more and more stringent. Microwave components are the core components of active phased array radar, and their volume, weight, stability and other indicators directly affect the corresponding overall indicators of the radar. Miniaturized and high-stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/06
Inventor 鲁加国吴贻伟吕春明
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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