【正文】 射頻濾波器，主要用于電子設備、頻率高工作更大的衰減高頻電子設備產生的干擾信號。射頻濾波器是最基本射頻設備。 由實踐可知，很多射頻系統(tǒng)中的元件不存在準確頻率選擇性，因此往往需要添加濾波器，用來極其準確地完成設定的選擇特性，所以對射頻濾波器的設計有重要的意義。 在設計模擬電路時，需要對高頻信號在特定頻率或頻段內的頻率分量做放大或衰減處理。 關鍵詞： 射頻，微波濾波器，微帶線， workbench ,Advanced Design System； The design and simulation of radio frequency filters ABSTRACT Rf filter, mainly used in electronic devices, high frequency work greater interference signal attenuation of high frequency electronic device. Rf filter is the most basic radio frequency devices. Can consist of microstrip line, also can by resistance, capacitance, etc. The practice shows that a lot of rf ponents do not exist in the system accurate frequency selective, so often need to add the filter, used extremely accurately plete set of selected features, so the design of rf filter has an important significance. Between active rf circuit at all levels can use filter to segregate, choice or rearrange the rf signal. In analog circuit design, the need for high frequency signal at a particular frequency or frequency ponent in the spectrum for amplification or decay process. It is very important task, so this article will focus on how to design and implement the task of rf circuit, rf filter. Keywords: Rf, Microwave filter, Microstrip line, The workbench。 目 錄 第一章 緒論 ......................................................................................1 課題研究的背景及意義 ................................................................................. 1 國內外濾波器的研究現(xiàn)狀及發(fā)展趨勢 ......................................................... 2 國內外濾波器的發(fā)展現(xiàn)狀 .................................................................. 2 論文組織 ......................................................................................................... 3 第二章 射頻濾波器 ................................................................................................ 4 濾波器的分類 ................................................................................................. 4 濾波器的主要參數(shù) ......................................................................................... 4 濾波器 的綜合設計和分析方法 ..................................................................... 6 綜合設計方法 ...................................................................................... 6 分析方法 .............................................................................................. 7 常見的射頻濾波器 ......................................................................................... 7 第三章 worhbench 設計與仿真 .......................................................................... 9 workbench 軟件介紹 ...................................................................................... 9 模擬帶通濾波器設計 ..................................................................................... 9 設計目的 .............................................................................................. 9 設計要求 .............................................................................................. 9 濾波器的設計原理及組件選擇 ...................................................................... 9 濾波器介紹 .......................................................................................... 9 有源濾波器的設計 ............................................................................ 10 濾波器類型的選擇分析 .................................................................... 10 741 運算放大器 ............................................................................... 12 電路仿真設計 ............................................................................ 13 仿真電路圖： .................................................................................... 13 第四章 微帶濾波器的設計與仿真 ...................................................................16 微帶線 ........................................................................................................... 16 微帶線傳輸?shù)闹髂?............................................................................ 16 微帶線的特性參量 ............................................................................ 16 耦合微帶線 ................................................................................................... 16 微波諧振器 ................................................................................................... 18 微波諧振器的基本參量 .................................................................... 18 諧振腔的等效電路 ............................................................................ 20 基本阻抗匹配理論 ....................................................................................... 20 匹配電路的概念和意義 ..........................................................