紧凑型波导功分器的研究

发布时间：2018-07-03 01:32

本文选题：波导功分器 + Ku波段　；参考：《电子科技大学》2017年硕士论文

【摘要】：伴随着这些年微波技术的发展,波导功分器作为可以分配以及合成功率的微波组件,在雷达阵列以及国防武器等领域有着必不可少的地位,在构建卫星通信系统以及环境遥感领域中,都扮演着不可或缺的地位,尤其是在需要大功率的通讯系统中用波导功分器进行功率合成,直接关系到整个系统的所能达到的最大功率,波导功分器的隔离度、相位一致性、插损等指标,直接关系到了大功率系统的功率合成效果。并且在频段很高,甚至是到了毫米波波段的时候,选择用波导来制作功分器是我们的首要选择。虽然现在的微波电路在向着易于集成的趋势发展,但是波导功分器的高功率、低插损、高频段,起着用其它结构所制作而成的功分器不能替代的作用,因此研究波导功分器有着非常重要的意义。随着许许多多的学者对波导功分器的研究,使其有了长足的发展,但同时也存在一些问题,如隔离度不好,因立体结构而不宜加工等,所以本论文的目的是在保证各项指标性能优越的情况下,设计结构紧凑易于加工的波导功分器。本论文的主要工作如下:第一,首先介绍了国内外各类功分器的发展现状与发展进程,分析了其中存在的一些问题,其次分析了一些常应用实际工程中的三端口功分器以及四端口功分器的工作原理以及特性。第二,设计了一款E面波导功分器:利用波导宽边没有电流流过的特性,把它设计成以宽边对称的结构使其可以沿宽进行抛开,在一定的程度上可以减小设计与加工的误差。第三,设计并加工了一款Ku波段四端口功分器:利用了阶梯结构匹配,使其能在全带宽内指标性能都优越,并做成了准平面结构使其结构更加紧凑以及易加工。
[Abstract]:With the development of microwave technology in recent years, waveguide power divider, as a microwave module that can distribute and synthesize power, plays an essential role in the fields of radar array and defense weapon. It plays an indispensable role in the field of building satellite communication system and environmental remote sensing, especially in the communication system which needs high power. It is directly related to the maximum power of the whole system, the isolation degree of the waveguide power divider, the phase consistency, the insertion loss and so on, which is directly related to the power combination effect of the high power system. Moreover, in the high frequency band, even in millimeter wave band, the choice of waveguide to fabricate power divider is our first choice. Although the current microwave circuits are developing towards easy integration, the high power, low insertion loss and high frequency band of waveguide splitters play an irreplaceable role in the power dividers made from other structures. So it is very important to study waveguide divider. Along with the research of waveguide power divider by many scholars, it has made great progress, but at the same time, there are some problems, such as poor isolation degree and unsuitable processing due to three-dimensional structure, etc. Therefore, the purpose of this paper is to design a waveguide splitter with compact structure and easy processing under the condition of superior performance. The main work of this paper is as follows: firstly, the development status and progress of all kinds of power dividers at home and abroad are introduced, and some problems are analyzed. Secondly, the working principle and characteristics of three-port power divider and four-port power divider which are often used in practical engineering are analyzed. Secondly, an E-plane waveguide power divider is designed: by using the characteristic that there is no current flowing through the wide edge of the waveguide, it is designed to be symmetrical with a wide edge so that it can be discarded along the width, and the error of design and fabrication can be reduced to a certain extent. Thirdly, a Ku-band four-port power divider is designed and fabricated: the step structure matching is used to make it have superior performance in the full bandwidth, and the quasi-planar structure is made to make the structure more compact and easy to process.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN626

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