臺灣博碩士論文加值系統

本論文為設計與製作可增益控制寬頻功率放大器之單晶微波積體電路（Monolithic Microwave Integrated Circuit，MMIC），針對無線區域網路（Wireless Local Area Network，WLAN）的規格，以符合IEEE 802.11 b之標準及2.4 GHz（2.4 GHz∼2.4835 GHz） 工業科學醫學（Industrial、Scientific and Medical，ISM）頻帶、操作之直流電壓源為3 V，採用GCTC（Global Communication Technology Corporation）提供之InGaP/GaAs Power HBT、電阻、電容及電感模型，用Agilent ADS 2002（Advance Design System 2002）進行電路模擬、分析並以Cadence Virtuoso Layout Editor完成MMIC佈局的工作，設計具低電源、高線性度之A類射頻功率放大器。利用匹配理論設計寬頻功率放大器，並且在前端加入可變增益放大器，以達到功率增益控制之目的。
最後用表面黏著電路元件（Surface Mount Device，SMD）建構電路，和MMIC電路做一比較。本計畫完成後之可增益控制寬頻功率放大器之輸出功率大於20 dBm，工作頻寬大於800 MHz，增益控制範圍可達20 dB以上。

The thesis is to design and implement the Wide Band Power Amplifier with Gain Control in MMIC (Monolithic Microwave Integrated Circuit) which will satisfy the standard of IEEE 802.11 b in ISM（Industrial Scientific and Medical） band. The operating DC power supply is 3 V. We use simulation tool ADS 2002 （Advance Design System 2002） from Agilent corporation to simulate and analyze the circuits. The models of InGaP/GaAs Power HBT, resistor, capacitance, and inductance are given by GCTC（Global Communication Technology Corporation）. Layout software will use Cadence Virtuoso Layout Editor. A Class A low power supply and high linear RF PA will be designed. Further more, we will design a wide band PA by using network matching theory and also add a variable gain amplifier in the front of MMIC to control the gain.
Finally, we use surface mount devices （SMD） to implement the circuit and compare with MMIC. The wide band power amplifier with gain control will offer more than 20 dBm output power, 800 MHz operating bandwidth and more than 20 dB gain control.

第一章緒論
第二章基礎微波理論
第三章功率放大器之重要規格與設計
第四章可控制增益寬頻功率放大器MMIC設計與製作
第五章可控制增益寬頻功率放大器MIC設計與製作
第六章結論

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