臺灣博碩士論文加值系統

在論文中，我們主要分三個部份來討論表面聲波諧振器模擬分析與其應用。第一部份探討如何利用等效電路模型(equivalent circuit model)來模擬表面聲波元件，並使用軟體Microwave Office作為模擬工具，而部份等效電路參數我們將利用耦合模態模型(COM)來進得粹取，最後模擬指叉換能器(IDT)以及柵狀反射器(grating)作為驗證。第二部份探討單埠表面聲波諧振器(one port SAWR)原理與其設計方法，最後我們將給予設計流程並利用等效電路模型模擬一個400MHz的單埠表面聲波諧振器作為驗證。第三部份探討表面聲波振盪器並利用它去設計一個418MHz時脈產生器；在此部份我們將說明為何選用單埠表面聲波諧振器作振盪電路，並探討其水平抖動(jitter)來源以及減少水平抖動的方法，最後對設計低水平抖動時脈產生器我們給了一些設計準則與建議。

The simulation, design and application of surface acoustic wave (SAW) resonators are performed systematically.
First, the equivalent circuit model simulating SAW devices utilizing the commercial simulation software, the Microwave Office was discussed. Some of the parameters of equivalent circuit model will be extracted from the coupling-of-mode (COM) model. Finally, the correction of simulation of the interdigital transducer (IDT) and grating will be verified by comparing with existing results by other researchers. Subsequently, the discussion focuses on the theory and analysis method of one port surface acoustic wave resonator. The design flow will be proposed and verified by using the equivalent circuit model and a 400MHz one port SAWR design example will be given to show its validity. Finally, the design of a low jitter clock generator will be discussed and a 418MHz SAW based clock generator is presented as an example to show the validity of the feedback oscillator analysis method. From the simulation-design-application sequence, some useful information may be derived for designing an ultra-low jitter clock generator.

第一章 緒論 ……………………………………………... 1
第二章 表面聲波元件概論
2-1壓電理論 ………….………………………………….…..… 4
2-2指叉狀換能器 ………………………………………...….… 5
2-3柵狀反射器 ….………………………………….………...... 7
2-4基板選擇 ……..…….……………………………………… 8
2-5表面聲波濾波器種類 ……………………………………… 10
第三章 表面聲波元件模擬與分析
3-1表面聲波元件模型簡介 ……………………….…………... 18
3-2等效電路模型 ……………………………………………… 18
3-3柵狀反射器模擬與分析 ………………………………....… 21
3-4指叉換能器模擬與分析 ……………………………..…...... 22
第四章 單埠表面聲波諧振器之模擬分析與設計
4-1諧振原理概述 ……………………………….…….……….. 31
4-2單埠表面聲波諧振器重要參數介紹 …………...….……… 31
4-3 One Port SAWR 工作原理 ……………………...………... 34
4-4寄生模態 ………………………………….………………... 35
4-5 400MHz One Port SAWR 設計分析與模擬 …………….. 37
第五章 表面聲波式脈波產生器
5-1時脈產生器之雜訊分析 …………………..………………. 50
5-2振盪器基本原理與分析方法 ……………………..………. 52
5-3表面聲波振盪器種類 …………………………..….……… 54
5-4表面聲波時脈產生器分析與設計 …………………..……. 55
5-4-1表面聲波振盪器 ……………………………….……. 56
5-4-2弦波轉方波電路 ……………………………….……. 58
5-4-3表面聲波式時脈產生器 ……………………….……. 58
5-5 設計低水平抖動時脈產生器的建議 ……………….…….. 58
第六章　結論 ……………………………………………….. 73

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