本論文研究主題為「應用於X頻帶之可重構式全金屬反射陣列天線」，其創新之處在於移除介質體，僅藉由金屬構裝而成的陣列平面。相較於傳統全金屬式的反射陣列天線常出現的問題：單元反射相位可控範圍不廣，為了解決此問題，吾人提出一款以阿基米德螺線槽孔實現於全金屬架構之單元，以增加反射相位可控範圍。另一方面，吾人發現全金屬式反射陣列通常以一面完整的不鏽鋼金屬進行雷射切割，將所有電路單元一次性完整切割於該面板之上。經深入分析發覺此一作法有下列缺點：一次性面板雷射切割之成本甚高、面板施作後即無法更動修改以及面板重量可觀易凹陷不平整。為了克服以上缺點，吾人想出類似地磚排列之方式，先將具有各種反射相位響應的全金屬反射陣列單元一一以雷射切割完成，再植入預先設計好的3D列印框架，以完成反射陣列之單元電路布局。相較於傳統設計，此架構能夠有以下特徵：
1. 每金屬單元大量製造可降低總陣列成本。
2. 單一電路單元損壞不影響製作流程。
3. 單元可於框架內重新排列組合，輕易產生不同的波束指向。
4. 全金屬的設計可有效降低介質損耗的問題。
最終實現在中心頻率10 GHz，以820個單元組合而成直徑為16 λo的全金屬反射陣列，饋入天線僅11.36 dBi，總反射陣列天線增益達到29.64 dBi，孔徑效率為35.7%，並提供6.58%之1-dB頻寬。
本論文詳細闡述此研究主題，包含研究動機、文獻回顧、反射陣列單元設計及反射陣列系統設計，最後以四組不同波束指向之狀態分別進行模擬、實作與量測。基於可重構之特性，此設計為無線衛星通訊帶來嶄新的發展。

In this thesis: X-band Reconstructable Metal-Only Reflectarrays are proposed. Compared to conventional metal-only reflectarrays exciting the problem of limited reflection phase coverage, this design is applying Archimedean spiral slots in a unit cell to enhance the coverage of reflection phase. On the other hand, the conventional metal-only reflectarrays are usually made on a single metal plane and the distribution of unit cells are made by laser cutting at one time, after in-depth study, we found that there exist the following disadvantages: high cost of laser cutting on whole metal, can not do any modification after laser cutting is done, and the flatness of the metal plane may destroyed by its weighting. In order to overcome those illness, this thesis propose a brick-liked arrangement, by making single cell separately, and mounting into lattice made by 3D printer to construct the overall reflectarray. Compared to conventional reflectarrays, this novel design has the following characteristics:
1. Each cell is easy to manufacture at low cost.
2. Do not affect the process if a cell is broken
3. Changing the beam direction easily by rearranging the unit cells.
4. Dielectric loss can be effectively eliminated by metal-only design.
The reflectarrays with 16 λ in diameter are consist of 820 unit cells, operating frequency at 10 GHz are realized. The gain of feeding antenna is 11.36 dBi, while the gain of this design is 29.64 dBi. This design reaches aperture efficiency of 35.7%, also provides 1-dB bandwidth of 6.58%.

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