WiMAX射頻前端模組微小化技術之研究

Miniaturization of RF Front-End Module for WiMAX Applications

薛丁明(Ting-Ming Hsueh)

指導教授 ： 許恆通

元智大學/電機通訊學院/通訊工程學系/碩士(2009年)

摘要

本論文的研究目標是WiMAX應用的射頻前端模組微小化，透過WiMAX系統規格與選定適合的主動元件，將研究重點放在被動元件，即濾波器和天線的設計與實現，實現技術的選擇是以達到系統最大的整合度為目標。針對自行設計的被動元件作測試其結果與模擬大致上相符合。經由接收端與發射端鏈路的功能測試，可得到模組接收端訊號最大接收距離為1.9公里符合移動式WIMAX系統(IEEE 802.16e)對手持行動裝置要求。為達到整個模組微小化的目的，透過選用高介質常數基板與多層結構實現技術來完成模組，經過模擬整個模組面積至少可以縮小50%。

關鍵字

射頻前端 ； 微小化 ； 濾波器 ； 天線

並列摘要

The main objective of this thesis is the development of miniaturized RF front-end module for WiMAX applications. Active components (mainly in MMIC form) will be selected based on the system specifications. Main focus and contribution will be in the design and implementation of passive components including the antenna and bandpass filters. The main criterion for the determination of implementation technologies is to achieve the maximum level of integration for the front-end module. Functional tests and field tests of the Tx/Rx chains exhibited a transmission distance of about 1.9km over the air which complies with the standard of the WiMAX system for mobile terminals. Further miniaturization of the module can be achieved either by adopting substrates with higher dielectric constant or through 3-D multi-layer implementation techniques. The simulated results revealed that a reduction of at least 50% in area can be achieved.

並列關鍵字

WiMAX ； RF front-end ； Miniaturization ； antenna ； filter

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