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Microwave window quick optimum design method based on NSGA-II

An optimized design and microwave window technology, which is applied in design optimization/simulation, calculation, instrumentation, etc., can solve the problems of high computer resource consumption and long time consumption, and achieve the effect of fast optimal design

Active Publication Date: 2017-03-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0011] In order to solve the time-consuming and high computer resource consumption of using pure numerical electromagnetic simulation software in the microwave window design process, and the combination of the pattern matching metho

Method used

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  • Microwave window quick optimum design method based on NSGA-II
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  • Microwave window quick optimum design method based on NSGA-II

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The example is to optimize the design of a membrane-loaded rectangular waveguide window.

[0048] Structural illustration of a membrane-loaded rectangular waveguide window figure 2 , the ceramic window 1 is introduced into the rectangular waveguide to achieve vacuum isolation, and the metal matching diaphragm 2 is introduced on both sides of the ceramic window to further widen the bandwidth. The design of the diaphragm-loaded rectangular waveguide window is mainly based on the given center frequency f 0 , rectangular waveguide (including wide side dimension a and narrow side dimension b) and ceramic window (including window material and window thickness t), optimal design of the distance L between the ceramic window and the metal matching diaphragm, diaphragm thickness dt and the opening width d of the diaphragm make the microwave window meet th...

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Abstract

The invention belongs to the technical field of simulation design and optimization of microwave windows in the field of microwave electric vacuum, and particularly relates to a microwave window quick optimum design method based on an NSGA-II. A pattern matching method and the NSGA-II are combined, two specific reconcilable and coordinative target optimization functions are provided according to the performance requirements of the microwave windows, the mechanism of survival of the fittest of a GA algorithm is fully achieved, it is guaranteed that the algorithm is close to the globally optimal solution, and quick optimization design of all kinds of microwave windows can be achieved. The method has the advantages that quick optimization design of all kinds of microwave windows is achieved, the problems that due to the fact that pure numerical value electromagnetic simulation software is adopted in the microwave window design process, consumed time is long, and a large number of computer resources are consumed are solved, and the limit that due to the fact that the pattern matching method and a traditional single-object optimization GA algorithm are combined, the requirement of a microwave window broadband cannot be met is overcome. Meanwhile, the method is suitable for optimum design of other broadband microwave devices.

Description

technical field [0001] The invention belongs to the technical field of analog design and optimization of microwave windows in the microwave electric vacuum field, and in particular relates to a rapid optimization design method of microwave windows based on NSGA-II (Nondominated Sorting Genetic Algorithms II: Non-Dominated Sorting Genetic Algorithms II). Background technique [0002] The microwave window is an important part of the input and output system of microwave vacuum devices, which serves the purpose of vacuum sealing and low reflection transmission of microwave power. The performance of the microwave window directly affects the performance indicators such as the frequency band, power capacity, reliability, electrical parameters and life of the microwave vacuum device. In microwave vacuum devices, according to their bandwidth, power capacity and other requirements, different microwave window structures can be selected, such as coaxial windows with wide bandwidth, high...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 巩进杰朱小芳胡权胡玉禄李斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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