摘要随着电子与通信技术的迅猛发展，作为系统关键器件器件的微波滤波器得到了广泛而深入的研究。微波毫米波集成电路及系统正朝着低成本、高性能、小型化和高集成度方面快速发展。基片集成波导(SIW)是一种新的导波结构，它继承了波导和微带线的优点，诸如品质因数高、功率容量大、尺寸小、易加工等，使微波毫米波系统的集成化成为可能。

本文首先介绍了基片集成波导的产生背景及国内外研究现状，然后引入了传统滤波器的设计方法，分析了基片集成波导的结构及其传输特性，在此基础上介绍了耦合谐振带通滤波器的电路结构及SIW的实现。考虑到传统滤波器设计优化方法的不足，本文采用了一种新的优化方法，即渐进空间映射算法（ASM）。并结合实例给出了应用这种方法的设计优化过程。仿真的结果符合了设计要求。66660

毕业论文关键词  微波滤波器  基片集成波导  带通滤波器   渐进空间映射

毕业设计说明书（论文）外文摘要

Title   Filter Design and Optimization Based on Integratd Waveguide                                                  

Abstract

With the rapid progress in modern wireless communication technology，the microwave filters，as one of the most important components，are widely and deeply researched.Microwave and millimeter wave integrated circuits    and related systems are moving toward low cost, high performance, miniaturization and high integration fast.Substrate integrated waveguide (SIW)was proposed as a new guide wave structure，which combines  the advantages of waveguide and microstrip，such as high Q，high power capability，compact size，and easily fabricated,thus, it is possible to package microwave and millimeter wave systems and integrate them on chip.         This paper firstly introduces the research background and research status at home and aboard of substrate integrated waveguide，the traditional filter design method and the analysis of substrate integrated waveguide structure and transmission characteristics. On the basis of presentation of the coupled resonator bandpass filter circuit structure and the realization of SIW. Considering traditional filter design optimization method deficiencies, a new optimization method, aggressive space mapping (ASM) is adopted in this paper. And an example is given to the design and optimization process of the application of this method. The simulation results accord with the design requirements.

Keywords  Microwave filters  SIW  Bandpass filter   ASM

目   次

1  绪论 1

1．1  基片集成波导的产生与研究背景 1

1．2  基片集成波导的结构特性与研究现状 1

1．3  本文的结构安排 2

2  微波滤波器设计的基本理论 3

2．1  滤波器的参数 3

2．2  传统滤波器设计理论 4

2.2.1  滤波器分类 4

2.2.2  常用的逼近函数 5

2. 3  耦合谐振器带通滤波器 8

2.3.1 耦合谐振电路的结构 8

2.3.2 耦合系数和外部品质因数 11

3  基片集成波导理论