摘要大功率微波管广泛应用于雷达、航天测控，卫星通讯等领域，是国防工业和军事电子装备的关键部件。作为大功率微波管的核心，行波管放大器的增益却存在功率波动过大，功率谱畸变，功率低的特性。而在实际的使用中，行波管放大器的增益需要趋于一致，则有必要在行波管输入端或输出端加均衡网络吸收多余的微波能量。在用具体电路来实现均衡网络时，需要考虑到线性发射机要求有更大的功率输出，更宽的带宽，更高的效率，更轻的重量，更高的可靠性。因此，用微带电路来实现宽带的功率均衡网络成为发展趋势。实验发现基于微带结构的电阻加载的枝节谐振器级联能够应用于宽带功率均衡网络的设计。本课题就是用这种方法进行设计2~8GHz宽带功率均衡器。67502

毕业论文关键词：均衡器  微波功率均衡器  宽带功率均衡器  电阻加载的宽带均衡器

毕业设计说明书（论文）外文摘要

Title   C-band broadband power equalizer design   

Abstract

High-power microwave tubes are widely used in radar, aerospace monitoring, satellite communications and other fields, the defense industry and military electronic equipment, key parts. As the core of high-power microwave tube, traveling wave tube amplifier gain but there is power fluctuation is too large, the power spectrum distortion, low power features. In practice, a traveling wave tube amplifier gain needs converge, it is necessary traveling wave tube input or output added balanced network absorb the excess microwave energy. In a specific circuit to achieve a balanced network, you need to take into account the linear transmitter requires a greater power output, wider bandwidth, higher efficiency, lighter weight and higher reliability. Therefore, the use of broadband microstrip circuit to achieve power equalization network become a trend. It was found that the resistance of the structure based on microstrip resonators loaded minor cascade power equalization can be applied to broadband network design. This topic is to use this approach to design broadband power equalizer.

Keywords   Equalizer  Microwave Power Equalizer  Broadband power equalizer   Resistive load broadband equalizer 

目   次

1  引言 1

1.1  课题研究背景和意义 1

1.2  本文所做的工作 2

2  微带的基本概念 2

2.1  微带的基本概念 2

2.2  微带的特性阻抗 3

2.3  微带的衰减和Q值 4

3  微波功率均衡器的设计 6

3.1  功率均衡器的基本概念 6

3.1.1  功率均衡器的基本概念 6

3.1.2  功率均衡器的分类 7

3.2  功率均衡器的理论分析 9

3.2.1  功率均衡器设计的网络分析方法 9

3.2.2  计算机优化设计方法 13

3.3  微波功率均衡器的设计与实现 13

3.3.1  “I”型微带谐振器的分析 14

3.3.2  发卡式微带均衡器的设计 18

4  C波段宽带均衡器设计