臺灣博碩士論文加值系統

中文摘要
本論文主要是設計一個11.492GHz的本地震盪器(local oscillator)，本文所描述的電路包含了幾個主要的部份TCXO IC、RF synthesizer IC、Frequency control IC、loop filter、VCO(voltage control oscillator) IC、feedback loop、multiple、micro-strip band-pass filter、amplifier、micro-strip low-pass filter.
本地震盪器在射頻/微波系統中是一個重要元件。它在傳輸器跟接收器中是作為標準的訊號產生器，本地震盪器通常是跟混波器一起使用將射頻訊號轉換到中頻。震盪訊號通常也能當成載波，它能調變低頻訊號轉換成上行轉換器（up-converter）或下行轉換器（down-converter）。震盪器被使用在射頻收發機中通常是被使用在一個同步環境中以便達到一個準確的輸出頻率。然而同步設計在射頻電路中仍是一項挑戰，因為它必須是符合非常嚴苛的需求。
近幾年來由於IC設計產業的蓬勃發展使得我們在設計上得以能直接使用現有的IC來做電路設計。

Abstract
In this thesis we design a 11.492GHz local oscillator circuit. This text was described a circuit which includes several important parts TCXO IC, RF synthesizer IC, Frequency control IC, loop filter, VCO(voltage control oscillator) IC, feedback loop, multiple, micro-strip band-pass filter, amplifier, and micro-strip low-pass filter.
The local oscillator is a very important component in the RF/microwave system. It serves as the signal generator in a transmitter and in a receiver, and the local oscillator is used together with a mixer to convert the received RF signal to an IF signal. The oscillator signal also can serve as a carrier, and the modulating low frequency signal to be transmitted like up-converter or down-converter.
The oscillators used in RF transceivers are usually embedded in a synthesizer environment so as to achieve a precise definition of the output frequency. Nevertheless synthesizer design still remains one of the challenging tasks in RF systems because it must meet very stringent requirement.
The flourish development designing the industry IC in recent years makes us be able to use existing IC directly in the circuit design.

封面內頁…………………………………………………….……………..i
簽名頁……………………………………………………………….…….ii
授權頁…………………………………….………………………………iii
誌謝…………………………………….…………………………………vi
中文摘要…………………….……….…………………………………..vii
Abstract……………………………………………………..…..….…….viii
Content…………………………………....………………………...…….ix
List of Figures………………………………………………...………..…xi
Introduction……………………………………………………..…………1
Research Motivation……………………………………………..………..3
Chapter 1 Phase lock loop…………………………………………..…….4
1.1 Basic PLL………………………………………………………..4
1.2 Phase detector……………………………………………………9
1.3 PLL basic loop filter design…………………………………….10
1.4 VCO…………………………………………………………….15
Chapter 2 attenuator circuit………………………………………………17
2.1 Attenuator………………………………………………………..17
2.2 πtype attenuator…………………………………….………….17
2.3 T type attenuator……………………………………….………..20
Chapter 3 Harmonic………………………………………..……….……..22
3.1 harmonic…………………………………………….……………22
3.2 Time varying frequency term……………………………….…....24
3.3 Analysis of a wave in a non-linear circuit………………….….…24
Chapter 4 Micro-strip line…………………………….…………………...27
Chapter 5 Hairpin line band pass filter…………………………………….30
Chapter 6 11.492GHz LO design step……………………………………..34
Chapter 7 Conclusion and future work…………………………………….52
Program flowchart………………………………………………….………51
Reference………………………………………………………….……….52

Reference
[1] Behzad Razavi “ RF MICROELECTRONICS ” pp1-11,pp206-297.1998.
[2] D. K. Jeong et al., “Design of PLL-Based Clock Generation Circuits,”
IEEE Journal, pp.255-261,April 1987.
[3] F. M. Gardner, “Charge-Pump Phase-Locked Loops,” IEEE Trans. Comm.,pp.1849-1858,1980.
[4] J. Crawford, “The Phase/Frequency Detector,” RF Design, pp.46-57,1985.
[5] W. F. Egan,Phase-lock Basic.New York:Wiley Inter-science,1998.
[6] 高頻通訊電路設計,袁帝文/王岳華/謝孟瀚/王弘毅 編著 第三章衰減電路pp78-81第七章微帶線電路pp295-305 高立圖書.
[7] 無線電高頻電路 袁杰編著 第三章傳輸線原理及運用pp3-1~3-41
[8] MICROWAVE COMMUNICATIONS ,EDHAR HUND ,1989 ,pp204-210.
[9] Microstrip filters for RF/Microwave applications JIA-SHENG.HONG；M.J.LANCASTER. pp77；pp109-158.
[10] Schneider, M. B., ”Microstrip dispersion”,Proc.IEEE, pp144-146 January 1972
[11] G. Mattaei L. Young,and E.M.T.Jones,Microwave Filters,Impedance-Matching Network,and Coupling Structures, Aetech House, Norwood,MA,1980
[12] E. G. Cristal and S. Frankel, “Design of hairpin-Line and hybrid hairpin-parallel-coupled-line filters,”IEEE MTT-S,Digest, 1971.