毫米波三埠E平面分岔導波管功率分波器

Three-Port E-Plane Bifurcated Waveguide Power Divider at Millimeter-Wave Frequencies

劉晏伸(Yan-Shen Liu)

指導教授 ： 李士修 ； 孫卓勳 ； 賴柏洲 ； 胡樹一

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2012年)

https://doi.org/10.6841/NTUT.2012.00308

摘要

毫米波三埠E平面分岔導波管功率分波器為一用於連接其它元件的電路，目的在於分配功率，本論文所提出的功率分波器適用頻率為32~36 GHz，並設計出反射損耗及隔離度皆大於15 dB、插入損耗介小於0.1 dB之間的功率分波器，此功率分波器利用矩形導波管來傳遞訊號，有一個輸入埠與兩個輸出埠，輸入、輸出埠都是Ka頻段所使用的標準矩形導波管，其尺寸為280 mil × 140 mil。矩形導波管在傳遞訊號過程中，利用E平面分岔導波管的概念，將一路分成兩路，也利用電阻膜置於導波管中以增加整體功率分波器的特性，如反射損耗和隔離度。設計此功率分波器前，先進行了分岔導波管及柴比雪夫多級阻抗匹配網路結構的探討，並將這兩種結果應用於功率分波器的結構中，順利完成三埠E平面分岔導波管功率分波器的設計，且達到設計前所設定的目標。未來將利用此設計完成九埠的功率分波器，也就是一個輸入埠、八個輸出埠，將原本三埠功率分波器的兩個輸出埠連接一樣的三埠功率分波器，達到四個輸出埠，依此類推，希望能完成八個或是十六個輸出埠的功率分波器，並應用在陣列天線、功率放大器等系統上。

關鍵字

功率分波器 ； 功率合成器 ； 矩形導波管 ； E平面分岔導波管 ； 電阻膜 ； 柴比雪夫多級阻抗匹配網路

並列摘要

The function of power divider is to divide to power from one input port into the divided power at multiple output ports, or to combine the power from multiple ports into the combined power at one output port. The goal of this study is to design a millimeter-wave power divider operating 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 15 dB. The insertion loss need to be less than 0.1 dB. The concept of E-plane bifurcated waveguide is proposed to implement this millimeter-wave power divider because of the concerns about operation at high-frequencies and high-power handling, capacity. A resistive film is placed inside the bifurcated waveguide in order to meet the specifications of the proposed power divider. In addition, impedance transformation is employed at output ports to convert the output waveguide to standard waveguide.

並列關鍵字

power divider ； power combiner ； rectangular waveguide ； E-plane bifurcated waveguide ； resistive film ； Chebyshev matching transformer

參考文獻

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