本論文提出一款向量和相移器系統，該創新設計為利用可重置合成傳輸線開關與耦合器作為交叉跨線，成為本系統之基礎單元，並結合單刀雙擲開關(SPDT)，以及利用由左手傳輸線與右手傳輸線構成之反向器等，整合形成向量和相移器系統。與傳統的Blass矩陣、Nolen矩陣，以及Butler矩陣等波束切換陣列利用離散方式相比，吾人所提出向量和相移器之架構，可實現連續掃描之應用。向量和相移器可經由適當配置，與相位可調合成傳輸線整合，組成向量調變器，實現相位及振幅可調之功能。
為了實現向量和相移器，本論文利用可重置合成傳輸線開關與耦合器作為交叉跨線，藉由調控變容器之偏壓改變電容值，造成交叉跨線輸出相位之改變，此為達成相位連續可調之關鍵因素。該向量和相移器尚須整合威爾金森功率結合器及由左手傳輸線與右手傳輸線構成之180度反向器，以實現其360度相移功能。
再者，為了實現向量調變器，吾人利用左手T型與右手π型集總電路實現相位可調合成傳輸線，並利用耦合器兩輸出埠相位差之特性，可使輸出訊號於電路傳遞時，透過調整相位可調合成傳輸線之變容器偏壓，造成其訊號產生振幅疊加或衰減之功能。吾人所提出之向量和相移器與向量調變器皆具有結構簡單與低成本之優點，可用於取代現有之微波電路系統中的相移器。
本論文詳盡討論此系統架構之設計概念、電路佈局，及模擬與量測比較結果，並進行適當分析討論。

This paper proposes a vector sum phase shifter system. The innovative design uses reconfigurable synthesized transmission lines and couplers as crossovers to form the building block. By combining with single-pole double-throw switches and phase inverter composed of left-handed/right-handed transmission lines, a vector sum phase shifter is integrated and realized. Compared with traditional beam switching arrays such as Blass, Nolen, and Butler matrices with discrete tuning steps, the proposed structure can achieve continuous phase tuning and may find applications in beam scanning arrays. In addition, the vector sum phase shifter can be properly configured and integrated with phase tunable synthesized transmission lines to form a vector modulator with quadrature amplitude modulation (QAM).
To realize the vector sum phase shifter, switches based on reconfigurable synthesized transmission lines and a pair of couplers are integrated together as a crossover. By adjusting the bias of the varactors to change the capacitance value, the output phase delay of the crossover can be manipulated, and becomes a key factor to achieve continuous phase tunability. A Wilkinson power combiner and a 180-degree phase inverter composed of the left-/right-handed transmission line are also used to complete the phase shifter with 360-degree phase tuning range.
Furthermore, in order to fulfill a vector modulator, left-handed T-type and right-handed π-type lumped circuits are used to realize phase tunable synthesized transmission line. By incorporated with the phase difference between the two output ports of the crossover, the amplitude of the output signal can be constructively or destructively interfered, thereby fulfilling quadrature amplitude modulation with simultaneously control of the amplitude and phase. The proposed vector sum phase shifter and vector modulator have the advantages of simple structure and low cost, and can be used to replace the existing phase shifter in the microwave circuit system.
This thesis introduces the design concept, circuit layout, simulation and measurement results of the system architecture, together with analysis and discussion.

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