A Design of Calibration Circuit Based on Adjustable-Phase and Adjustable-Amplitude Synchronous Dual-Channel DDS Technology

摘要：

The design of a calibration circuit for dualfrequency induction tool is introduced.We put the calibration circuit into calibration signal generation circuit and processing circuit. The former one is based on dual-channel reconfigurable and synchronous DDS technology with adjustable phase difference and adjustable amplitude radio. The latter one is composed of channel selection switch,cascade amplifier,mixer and active band-pass-filter. The experiment result shows that this system can produce stable calibration signal with good signal noise ratio and common-mode rejection ratio to accomplish the scale job.

关键词： dual frequency induction tool synchronous dual channel DDS calibrationt.

作者: Huang He Shi YiBing Li YanJun

作者单位: Department of Automation Engineering,University of Electronic Science and Technology of China Cheng Du,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 636-640

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）