多工器是無線系統內重要元件之一，此計畫共提出五個多工器電路: 使用均勻阻抗共振器之多工器、使用步階阻抗共振器之多工器、使用四分之一波長阻抗共振器之多工器、寬頻多工器設計與可調式多工器設計。計畫預計使用PIN 二極體作為切換與微調的元件，並利用微帶線技術實現電路，電路架構與特性已由初步的模擬結果獲得驗證。計畫所提出的架構之特點有微小化、高隔離度、成本低、寬通帶與具可調性，這些特性將使所提出的架構於民生應用上具競爭性。Multiplexer is an important component in wireless systems. This project is going to proposed five multiplexers. They are multiplexer using uniform resonator, multiplexer using stepped-impedance resonator, multiplexer using quarter-wave resonator, wide-band multiplexer and reconfigurable multiplexer. These circuits will be fabricated with PIN diodes by using microstrip technology. Initial simulated results have shown the possibility of the proposed circuits. The features of the proposed circuits include compactness, high isolation, low cost, wide bandwidth and flexibility. All of these advantages make the proposed circuits attractive in civil applications. 研究期間：10008 ~ 10107
