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博碩士論文 etd-0822111-163935 詳細資訊
Title page for etd-0822111-163935
論文名稱
Title
設計與評估用於聲波感測器應用的可程式化頻率產生特殊應用晶片
On the design and evaluation of a programmable frequency generator ASIC for acoustic-wave sensor application
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
108
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2011-07-28
繳交日期
Date of Submission
2011-08-22
關鍵字
Keywords
壓電晶體、共振頻率、可程式化頻率產生器、振幅偵測器、栓鎖比較器
piezoelectric crystal, programmable frequency generator, resonance frequency, amplitude detector, latch comparator
統計
Statistics
本論文已被瀏覽 5644 次,被下載 621
The thesis/dissertation has been browsed 5644 times, has been downloaded 621 times.
中文摘要
近年來因為半導體技術的進步,成熟的積體電路設計,使得複雜的訊號處理設備都可以由積體電路型式取代龐大的硬體設施。
本文介紹了一種用於共振器量測的可程式化頻率發生器的應用,目的是取代現有的複雜訊號處理設備並使用它來尋找共振器的共振頻率及兩個不同的共振器的共振頻率的差異。它具有靈活的調整中心頻率及數位解析度。整個系統採用數位的方法來控制上升頻率。它使用差動的方法檢測兩個不同的共振器,利用這種方法可以抵消一些環境因素對共振器的影響(如:溫度,壓力)。
本電路使用Synopsys 的 HSPICE 與 Cadence 的 Spectre 做電路模擬 及使用 National Instruments 的 LABVIEW 做輸出結果的紀錄工作並利用MATLAB來做輸出結果的分析,此電路利用台灣積體電路股份公司所提供的0.35μm 2-poly 4-metal CMOS 製程技術完成,最後探討量測與相關的模擬結果。
Abstract
In recent years, due to advances in semiconductor technology and mature integrated circuit design, complex signal processing equipment is beginning to be replaced by the integrated circuit.
This paper presents an integrated circuit programmable frequency generator for open-loop resonator application and its evaluation. It can eventually replace the conventional discrete component system and be used to find the resonance frequency shift for the readout of micro-balances or similar devices. The oscillator provides an analog tuning input to set the coarse center frequency and bit resolution, and uses a digital input to control the frequency sweep. Calculating the resonance frequency difference between the active balance and a passive reference can mitigate some environmental effects on the resonator (e.g. temperature).
The generator circuit is designed using Synopsys’ HSPICE and Cadence's Spectre to perform circuit simulation. The circuit is implemented by Taiwan Semiconductor Manufacturing Company in 0.35 μm 2-poly 4-metal CMOS process technology. The potential detection precision of a micro-balance using the forward generator is assessed by connecting test chips to an evaluation PCB with commercial piezo crystals providing a known resonance frequency for testing. National Instruments’ LABVIEW is used to record the data output, and MATLAB to analyze the results. A minimum detection accuracy of 1 kHz is demonstrated with this setup.
目次 Table of Contents
Contents
誌謝 i
摘要 ii
Abstract iii
Contents iv
List of figure vii
List of table xiii
Chapter 1 Introduction 1
1.1 Basic concept 1
1.2 Thesis organization 4
Chapter 2: Measurement of the frequency shift 6
2.1 Biosensor 6
2.2 Quartz crystal unit 8
2.3 Quartz crystal equivalent circuit 9
2.4 Detection system structure 11
2.4.1 Single resonance frequency detector system design 12
2.4.2 Single resonance frequency detector system equivalent circuit 13
2.4.3 Resonance frequency difference detector system design 19
2.4.4 Labview program 20
2.5 Measurement result and setting 22
Chapter 3 Integrated resonance frequency generator and detector circuit design 32
3.1 System design 32
3.2 Programmable frequency generator design 33
3.2.1 Square wave oscillator design 33
3.2.2 Digitally programmable current generator 36
3.2.3 8-bit up-down counter 39
3.2.4 Simulation results 44
3.2.5 Output buffer 45
3.2.6 Layout of frequency generator 47
3.3 Amplitude detector 48
3.3.1 Introduction 48
3.3.2 Block diagram 49
3.3.4 Simulation result 52
3.3.5 Layout of amplitude detector 53
3.4 Latched Comparator 54
3.4.1 Introduction 54
3.4.2 Block diagram 54
3.4.3 Circuit diagram 55
3.4.4 Simulation result 56
3.4.5 Layout of the latch comparator 58
3.5 Output data processing 58
Chapter 4 Chip measurement and the variable frequency generator application for resonator 61
4.1 Chip measured results 61
4.2 Resonance frequency shift system measurement 67
4.2.1 Single crystal resonance frequency detection 68
4.2.2 Two-crystal measurement: resonance frequency difference measurement 75
4.2.3 Measurement results: Two nominally identical crystals 77
4.2.4 Measurement results: Two crystals with different nominal resonant frequencies 81
Chapter 5 Conclusions and future work 88
5.1 Conclusions 88
5.2 Future work 89
References 90

參考文獻 References
References
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