為了實現寬頻的槽線至矩形波導轉接，本篇論文採用具有寬頻特性的有限長度之領結式天線，來實現X-band (8.2-12.4 GHz)全頻帶的槽線到矩形波導轉接、其分析、設計與量測結果皆在本文中有詳細的探討。經過適切的設計，這個轉接可以達成寬頻、緊緻和構造簡單的目標。在整個X-band的範圍內，單一個轉接的模擬插入損耗皆小於 0.1 dB，反射損耗皆大於 15 dB，可謂一個相當寬頻的轉接。
為了驗證這個結果，我們製作了一組背對背的轉接結構，在整個X-band的範圍內，其模擬和量測的結果大致上還吻合；其模擬和量測的插入損耗分別小於 0.25 dB和 0.4 dB，其模擬和量測的反射損耗分別大於 13 dB和 15 dB，可謂相當的不錯一個設計。
另外，我們使用設計好的槽線至矩形波導轉接，結合共面波導至槽線的轉接，完成一個寬頻的共面波導至矩形波導轉接。在整個X-band的範圍內，其模擬的反射損耗皆在 14 dB以上，其穿透損耗皆小於 0.2 dB，亦可謂一個相當寬頻的轉接。

In order to realize a broadband slotline-to-rectangular waveguide transition, we adopt a truncated bow-tie antenna, which possess a broadband characteristic. This transition is designed in X-band (8.2-12.4 GHz) to make the insertion loss as small as possible and the return loss as large as possible in the full band of X-band. A complete analysis, design procedure, and measurement verification are discussed in the following contents of this thesis. Through proper design, the simulation results show a wideband response for a single transition with a insertion loss smaller than 0.1 dB and a return loss larger than 15 dB.
In order to verify our results, we fabricate a back to back transition composing of two single transitions connected back to back. The simulation and measurement results of the back to back transition agree well in the full band of X-band. The simulation and measurement insertion losses are smaller than 0.25 dB and 0.4 dB in the full band of X-band, respectively and the simulation and measurement return losses are larger than 13 dB and 15 dB, respectively.
While the wideband slotline-to-rectangular waveguide transition is accomplished, it is used to implement a wideband CPW-to-rectangular waveguide transition by integrating it with a CPW-to-slotline transition. The simulation results show that the return loss is larger than 14 dB and the insertion loss is smaller than 0.2 dB over the entire X-band, which means that a wideband performance could be easily achieved by this structure, also.

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