對於毫米波固態放大器而言，提高系統輸出功率的最有效方法就是製作出低損耗的功率合成/分波器，本論文提出適用於Ka頻段的五埠E平面Y型分岔導波管功率分波器，設計出操作頻段在32~36 GHz，反射損耗與隔離度皆大於20 dB，插入損耗介於0.2 dB的功率分波器。在設計本論文的功率分波器之前，先進行微波與毫米波功率合成/分波技術的探討，接著探討與本論文設計相關的E平面分岔導波管功率分波器的演進與設計，作為設計與改進的方向。在設計過程中，結構上將考慮金屬加工與組裝造成的影響，依序設計出柴比雪夫阻抗轉換器、導波管彎角、並找出合適的電阻膜值，將其組合成三埠E平面Y型分岔導波管功率分波器後，再推廣到本論文五埠功率分波器。
本論文將以有限元素法為基礎的模擬軟體HFSS來執行相關的模擬，並以實作與量測進行驗證。而有別於其他類似設計結構，本論文使用10 mil基板與減少阻抗轉換器數目的設計，大幅降低組裝難度、金屬加工錯誤機率，利於降低成本與元件的製作。
未來可將此設計推廣至多埠的功率分波器，應用在固態放大器的製作上。

For solid-state amplifier in millimeter-wave, the most useful method to enhance output power is to design a low loss power combiner/divider. In this thesis, we present a Five-Port E-Plane Y-Structure Bifurcated Waveguide Power Divider in Ka-band. The specifications of the proposed power divider operate at the range from 32 GHz to 36 GHz, the return loss at each port and the isolation between from output ports are required to be greater than 20 dB, the insertion loss need to be less than 0.2 dB. Before design power divider in this thesis, we make a discussion on micro-wave and millimeter-wave power combing/dividing technology, to understand how to combine power divider, then to study the evolution and design of E-Plane Bifurcated Waveguide Power Divider which related to our structure, so we can refer and improve it in our design. Finally, we present our design. In the procession of designing, it considers the effects of fabrication and assembly in our structure, and then follows the steps to design Chebyshev matching transformer, radial waveguide, and suitable value of resistive film. After that, they combine to a Three-Port E-Plane Y-Structure Bifurcated Waveguide Power Divider, and then it extends to Five-Port Power Divider of this thesis.
A finite element method based commercial CAD package, HFSS, is chosen to conduct the required simulations, and the results are verified experimentally, it is shown that the proposed design can match the measurement successfully. In this thesis, the design differs from other similar structures; we use the 10 mil substrate and reduce the numbers of impedance transformer, it is shown that the proposed design have advantages on assembly, fabrications, and low cost, so it is very suitable for fabrication.
The design in this thesis can be extend to multi-port power divider, and it will be used in solid-state amplifier in the future.

中文摘要 i
英文摘要 ii
誌謝 iv
目錄 v
圖目錄 vii
表目錄 xi
第一章 序論 1
1.1 研究背景 1
1.2 研究動機 1
1.3 論文架構 3
第二章 不同形式之微波和毫米波功率合成/分波技術 5
2.1 微波和毫米波功率合成/分波技術概述 5
2.2 各種微波和毫米波功率合成/分波技術介紹 6
2.2.1 晶片功率合成 7
2.2.2 電路功率合成 8
2.2.3 空間功率合成 12
2.2.4 其他功率合成 13
第三章 E平面分岔導波管功率分波器 14
3.1 E平面分岔導波管功率分波器概述 14
3.2 平面傳輸線式威爾金森功率分波器 14
3.3 T接面功率分波器 18
3.4 分岔導波管功率分波器 20
3.5 三埠E平面分岔導波管功率分波器 26
3.6 總結 30
第四章 五埠E平面Y型分岔導波管功率分波器 31
4.1 五埠E平面Y型分岔導波管功率分波器概述 31
4.2 基板與電阻膜 31
4.2.1 基板 32
4.2.2 電阻膜 32
4.3 五埠E平面Y型分岔導波管功率分波器設計 34
4.3.1 基板厚度 34
4.3.2 阻抗轉換器設計 35
4.3.3 E平面導波管彎角設計 40
4.3.4 三埠E平面Y型分岔導波管功率分波器設計 42
4.3.5 五埠E平面Y型分岔導波管功率分波器設計 48
4.4 實作與量測 51
第五章 結論 68
參考文獻 69

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