中文摘要
本論文說明如何為頻寬高達5 GHz之數位儲存示波器(Digital Storage Oscilloscope, DSO)設計其類比前端可調增益放大器，設計困難點在於DC到5 GHz的頻帶內，需要完成超寬頻及低失真設計，本論文採用Cherry-Hooper放大器架構，達成-2 dB到37 dB的可調增益範圍、頻寬內增益平坦度小於1 dB、及頻寬內二階與三階諧波失真小於40 dBc，此電路是利用TSMC 0.35 m SiGe製程加以設計實現。
Abstract
This paper presents the design of a variable gain amplifier for the front-end circuitry of 5-GHz high-speed digital storage oscilloscopes (DSO). The design challenge includes wide bandwidth and low distortion over the frequency range from DC to 5 GHz. The Cherry-Hooper amplifier configuration is used to tackle the issues. The designed variable gain covers the range from -2 to 37 dB. The gain flatness carries out ripples less than 1 dB. The circuits are implemented in TSMC 0.35 m SiGe technology.
關鍵詞(Key Words)
可調增益放大器(Variable Gain Amplifier ; VGA)
數位儲存示波器( Digital Storage Oscilloscopes : DSO)
回授放大器(Cherry-Hooper Amplifier)
相關檔案: 應用於數位儲存示波器之DC-to-5 GHz 可調增益放大器設計(全文)
