WiMAX應用之高功率高線性單埠雙通開關設計

High Power, High Linearity SPDT Switch Design for WiMAX Application

蔡宜玲(I-Ling Tsai)

指導教授 ： 黃建彰

元智大學/電機通訊學院/通訊工程學系/碩士(2007年)

摘要

本論文使用穩懋半導體所提供的GaAs pHEMT製程實現單埠雙通開關(SPDT SWIC)電路。論文中所討論之單埠雙通開關 (SPDT SWIC) 可應用於移動式WiMAX (802.16e) 系統及固定式WiMAX (802.16-2004) 系統，為實現WiMAX系統中所要求的高功率及高線性度的需求，於電路架構中使用多段FET架構、加入閘極-源極間和閘極-汲極間電容、以及增加電源輸入端至RF路徑上之電阻等方式，藉以改善單埠雙通開關 (SPDT SWIC) 在高功率及高線性度上的需求，此外，在操作電壓為+3V/0V且輸入功率為25dBm時，WiMAX調變訊號之誤差向量幅度特性 (EVM) 低於3%。

關鍵字

單埠雙通開關

並列摘要

A high power GaAs single-pole double-throw (SPDT) antenna switch with high linearity is proposed for WiMAX system applications. The circuit structure is adapted to handle high power operation by using the stacked configuration with the aids of capacitors and resistors to increase the FET dynamic range in OFF state. As WiMAX modulation signal is applied, the signal quality in error-vector-magnitude (EVM) is less than 3% for 25dBm input power with the controlled voltage in +3V/0V.

並列關鍵字

High Power ； High Linearity ； SPDT Switch ； WiMAX

參考文獻

[8] MICRO-ELECTRONICS 新電子科技子雜誌 2006/04 城邦文化事業股份有限公司

[9] MICRO-ELECTRONICS 新電子科技子雜誌 2007/03 城邦文化事業股份有限公司

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[2] Kang-Ho Lee, Zhejun Jin, and Kyung-Heon koo, “High Linearity SPDT Switch for Dual Band Wireless LAN Applications,” IEEE Proceedings, 2005

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