超寬頻負回授低雜訊放大器
  ‧ 專利名稱 負迴授式高寬頻信號放大器電路
  ‧ 專利證書號 I418140
US 7,622,995 B2
  ‧ 專利權人 國立臺灣大學
  ‧ 專利國家
    (申請日)
中華民國 (2008/01/21)
美國 (2008/06/19)
  ‧ 發明人 李偉暘, 江簡富 ,
 
技術摘要:
一種負回授式超寬頻信號放大器電路,其可應用於整合至一超寬頻(ultra-wide band,UWB)之電路系統,用來對超寬頻之電子信號提供一低雜訊之增益放大功能;且其電路架構的特點包括:於輸入端設置一雙階式濾波電路單元、於電晶體放大電路架構中設置電阻式之回授電路單元、以及於輸出端設置一共源極式之電晶體放大電路。此些特點可令輸入信號之放大功能具有平坦之增益、較低之耗電量、較低之雜訊因數、以及較高之操作穩定性。
A negative-feedback type ultra-wideband signal amplification circuit is proposed, which is designed for integration to an ultra-wideband (UWB) signal processing circuit system for providing a low-noise amplification function to UWB signals. The proposed circuit architecture is characterized by the provision of a dual-step filter circuit on the input side, the provision of a resistive-type feedback circuit in the transistor-based amplification circuitry, and the provision of a common-source transistor-based amplification circuit on the output side. These features allow the proposed signal amplification circuit to have flat power gain, lower power consumption, low noise figure, and higher operational stability.




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