本論文提出一款二維訊號回溯/反射陣列。此陣列之設計概念是接收來自未知特定方向之訊號之後，除了將此訊號導向固定平面做線性掃描外，更能將此訊號導至空間中的特定節點，使該陣列作為中繼點角色並能進行二維方向掃描，提升其原本只能於一維掃描之能力。又本論文提出兩種架構，經過方程式運算及實際架構驗證，該兩種架構之成果皆能與設計概念相吻合。
為驗證此二維訊號回溯/反射掃描陣列，吾人從前人提出之線性訊號回溯/反射陣列開始，以矩陣整理陣列因子探討其接收與反射訊號之間的關係整理歸納成式。觀察此式發現，可以兩種架構實現之，是為二維回溯式波束掃描陣列與二維反射式波束掃描陣列，並使用額外增加兩個維度的額外相移項來達成平面掃描並初步以數值計算軟體Matlab驗證之。
本實驗驗證結合可調式相移器、增益放大器、天線收發對等核心元件，又為增加切換狀態時之便利性而導入的Arduino控制板，透過撰寫程式達到切換兩維度的相移項，增加實驗驗證的效率。而兩種架構的實際驗證也均與模擬相吻合，驗證此二維波束掃描陣列可在已知特定入射角度下，將接收訊號回傳至空間中特定方向。

A signal retro-/reflecto- scanning planar array is proposed in this thesis. The concept of this array is to receive the signal which is incident from unknown and not only re-transmit it to scan linear arbitrary direction, but also scan in the space. Two different configurations, retro-directive and reflect, have been implemented. All of the calculated and measured results meet the design goals in both cases.
To realize the signal retro-/reflecto-scanning planar array, the basis of this study is start from linear structure of the signal retro-/reflecto-scanning array. Using matrix calculation, the general relationship between the received and re-transmitted signal is then derived. Two of the structure can be realized. To achieve beam-scanning capability, an extra progressive phase shift of two dimension is inserted in the connecting part in order to exchanging signal for retrodirection and reflection. Base on the general rules, two configuration are proposed as follows: retro-scanning planar array and reflecto-scanning planar array.
In the experiments, tunable phase shifter, gain amplifiers and transmitting/receiving antennas are combined. For the convenience of changing state for phase shift, an Arduino microcontroller is introduced and by coding, the phase shift in two dimension can be control as well.
Good agreement between the simulated and measured results in both configurations can be observed. For a given incident angle, the signal retro- or reflecto-scanning planar array can re-transmitt the received signal to an arbitrary in the whole plane pre-defined by the phase shifter.

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