本論文著眼於毫米波段之倍頻器和濾波器研製。倍頻器部分，包括一個單晶二倍頻器(42.5-to-85 GHz)，兩個單晶三倍頻器(14-to-42 GHz和31-to-94 GHz)，以及一個單晶四倍頻器(19-to-76 GHz)。濾波器部分，主要設計為了點對多點分佈式服務系統，包括接收端27.35~28.35 GHz和發射端31~31.3 GHz兩個頻段。
毫米波段之倍頻器採用單晶微波積體電路(microwave/millimeter-wave monolithic integrated circuit, MMIC)之架構。兩倍頻及三倍頻器採用0.1 微米閘極長之高電子移動度場效電晶體製程，在砷化鎵基材上，使用微帶線設計，而製程則透過國科會晶片中心取得美國TRW之代工服務。
四倍頻則採用0.15微米閘極長之高電子移動度場效電晶體。為了證明平衡式架構可利用相位關係抑制兩倍頻的訊號，我們成功地在FR4電路版上製作了一個混成型(hybrid)平衡式四倍頻器。
濾波器採用微帶線設計，於氧化鋁基板上製作。封裝效應對濾波器頻率響應的影響藉由實際製作與量測亦被驗證。因此封裝效應必須在濾波器開始設計時先行考慮。至於濾波器模擬與量測結果的一致性，可提供準確的設計。

This thesis describes the HEMT frequency multiplier design and filter design at millimeter-wave frequency. HEMT frequency multipliers include a monolithic 42-to-84 GHz doubler, a monolithic 14-to-42 GHz tripler, a monolithic 31-to-94 GHz balanced tripler, and a monolithic 19-to-76 GHz balanced quadrupler. Filters are designed for a local multi-point distributed service (LMDS) system. The 27.35~28.35 GHz filter is used at receiver-end and the 31~31.3 GHz filter is used at transmitter-end.
For the millimeter-wave frequency band, monolithic microwave integrated circuit frequency multipliers are designed with microstrip line configuration. The MMIC frequency doubler and triplers are fabricated on 4-mil-thick GaAs substrates using 0.1-μm InGaAs/AlGaAs/GaAs PHEMT technology provided by commercially available foundry service, which is accessed through the Chip Implementation Center of National Science Council of Taiwan.
The MMIC balanced frequency quadrupler is fabricated on 4-mil-thick GaAs substrates using 0.15-μm InGaAs/AlGaAs/GaAs PHEMT technology. In order to prove the balanced configuration that can suppress the second harmonic signal by phase cancellation nature, a hybrid circuit was implemented on FR4 substrates using PHEMT devices, respectively.
The filters for a LMDS system are manufactured on Al2O3 substrates with microstrip coupled line configuration. The box resonance are observed by the measurement of both receiver-end and transmitter-end filter with different box height. Hence, housing effect should be considered in the beginning of filter design. Besides, the simulated results of both Rx and Tx filters are close to measurement.

Chapter 1: Introduction----------------------------------------1
1.1 Introduction 1
1.2 Chapter Outline 1
Chapter 2: Design Methodology of Active Multiplier---------4
2.1 Introduction 4
2.2 Bias condition 5
2.2.1 Class A 5
2.2.2 Class B 7
2.3 Active Multiplier Design 10
2.3.1 Single-ended and Balanced Configurations 10
2.3.2 Input and Output Matching Network Configurations 11
Chapter 3: Monolithic HEMT Frequency Doubler and Tripler------13
3.1 Overview 13
3.2 MMIC Foundry Description 14
3.3 42.5-to-85 GHz HEMT Frequency Doubler 15
3.3.1 Device Selection 15
3.3.2 Circuit Design 15
3.3.3 Simulated Results 16
3.4 14-to-42 GHz HEMT Frequency Tripler 20
3.4.1 Circuit Design 20
3.4.2 Simulated Results 20
3.5 W-band Balanced HEMT Frequency Tripler 25
3.5.1 Circuit Design 25
3.5.2 Simulated Results 26
Chapter 4: Balanced HEMT Frequency Quadrupler-----------------32
4.1 Overview 32
4.2 Hybrid Balanced HEMT Frequency Quadrupler 34
4.2.1 Device Description 34
4.2.2 Circuit Design 38
4.2.3 Measured Results 43
4.3 MMIC Balanced HEMT Frequency Quadrupler 46
4.3.1 Overview 46
4.3.2 MMIC Foundry Description 46
4.3.3 Circuit Design 47
4.3.4 Simulated Results 51
4.4 Conclusion 55
Chapter5: 27-31 GHz Filter Design-----------------------------57
5.1 Principle of Filter Design 58
5.1.1 Lumped-element filter 58
5.1.1.1 The Classification of Filter 58
5.1.1.2 Design Method 59
5.1.1.3 Low-pass Filter to Bnad-pass Filter Transformation 60
5.1.2 Distributed Band-pass Filter 63
5.1.2.1 Transmission Line Resonator 63
5.1.2.2 Impedance and Admittance Inverters 64
5.1.3 Coupled Line Band-pass Filter 66
5.1.4 Band-pass Filter Using Capacitively Coupled Resonators 68
5.2 Housing Effect 70
5.3 Filter Design for LMDS 74
5.3.1 Receiver-end Filter Design 78
5.3.2 Transmitter-end Filter Design 88
Chapter6: Summary---------------------------------------------94
Reference-----------------------------------------------------96

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