近年來無線通訊蓬勃發展，無線電收發機佔有相當重要的地位，無線電收發機之射頻部分有許多重要的區塊，像是低雜訊放大器、功率放大器、混波器、頻率合成器以及天線與射頻電路連接電路。本論文設計技巧應用於無線收發機之的低雜訊放大器、功率放大器及SPDT（Single Pole Double Throw）發射接收開關電路，分別依照理論研究設計並且實現驗證。
第一部分將運用E-PHEMT場效電晶體，設計一個低雜訊放大器，此低雜訊放大器符合2.6GHz全球互通微波存取(WiMAX)802.16e規範及2.4GHz無線區域網路802.11b/g規範。
第二部份將運用GaAs場效電晶體，設計一個單級極功率放大器及一個平衡式功率放大器，它們遵守2.6GHz全球互通微波存取(WiMAX)802.16e規範。以及GaAs電晶體偏壓電路之設計方法。
第三部份將運用PIN二極體，設計前端放大器連接至天線的開關電路，此單刀雙擲（SPDT）開關電路遵守2.6GHz(WiMAX)802.16e規範。

Due to the recent development of wireless communication, transceivers play important roles in it. A wireless transceiver includes a low noise amplifier (LNA), power amplifier (PA), mixer, frequency synchronizer and connection circuit between the antenna and the radio frequency (RF) circuit. This thesis addresses the LNA, PA and Single-Pole Double Throw (SPDT) switching circuit which are applied in wireless transceiver. They are all designed according to the theory and verified with experiments.

The first part is to design a LNA by employing an E-PHEMT FET. The LNA meets the specifications of both 2.6GHz Worldwide Interoperability for Microwave Access (WiMAX) 802.16e and 2.4GHz wireless LAN 802.11b/g.

The second part is to design both a single stage PA and a balanced PA by using GaAs FETs. They comply with the specification of the 2.6GHz Worldwide Interoperability for Microwave Access (WiMAX) 802.16e. We also discuss the design method of the bias circuit for GaAs FETs.

The third part is to design the switching circuit between the front-end amplifiers and antenna. The SPDT switching circuit also meets the specification of the 2.6GHz WiMAX 802.16e.

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