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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/8369


    Title: 應用於凱氏天線X頻段之低雜訊放大器設計;The Study on the X-band Low Noise Amplifier Design for Cassegrain Antenna.
    Authors: 李忠穎;Chung-Ying Lee
    Contributors: 通訊工程研究所碩士在職專班
    Keywords: 低雜訊放大器;凱氏天線;X頻段;X band;Low Noise Amplifier;Cassegrain antenna
    Date: 2009-05-18
    Issue Date: 2009-09-22 11:23:52 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 此論文設計一個適用於凱氏衛星天線的低雜訊放大器(LNA),工作區域為X頻段7GHz ~ 9GHz,其中採用Agilant公司的ADS(Advanced Design System)軟體進行模擬。主要模擬的重點在於LNA放大電路優化及輸入輸出阻抗匹配、雜訊指數、功率增益等,藉由調整其中電路元件參數,來設計出系統最佳效能。由模擬結果顯示此LNA在全頻段具有至少13dB功率增益、雜訊指數小於3dB,輸出返回損失小於-17dB的低雜訊放大器。 A low noise amplifier(LNA) suitable for Cassegrain antenna applications is designed in this thesis. Which works in X band 7GHz ~ 9GHz. Here we adopt as Advanced Design System(ADS) published by Agilant corp. for simulation. The Main simulation points are LNA circuit optimization, input/output impedance matching, noise figure, power gain. Through adjusting the component parameter of the LNA circuit, the system optimization can be determined. Simulation results show that the LNA at X band is characterized by at least 13dB of power gain, less than 3dB of noise figure, and output return lose less than -17dB.
    Appears in Collections:[通訊工程學系碩士在職專班 ] 博碩士論文

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