Study on the dependence of digital filter performances on sampling frequency for amplitude measurements
Creators
- 1. Dept of Engineering Physics, Tsinghua University, Key Laboratory of Particle and Radiation Imaging (Tsinghua University), Ministry of Education, Beijing (China)
Description
Based on commonly applied digital signal processing circuit in nuclear electronics, the dependence of digital filtering performance on ADC sampling frequency has been analyzed. Derive analytically the amplitude measurement performance on the sampling frequency, and then obtain the optimum signal-to-noise ratio under certain sampling frequency as well as noise index of digital trapezoidal filter. The dependence of amplitude measurement fluctuation on the sampling frequency is demonstrated by the numerical simulation and measurements with digital oscilloscope sampling. The dependence of the noise of ORTEC 142AH charge sensitive pre amplifier on the sampling frequency is consistent with the theoretical results. This study offers a theoretical criterion for sampling frequency selection in digital amplitude measurements. (authors)
Additional details
Publishing Information
- Journal Title
- Nuclear Electronics and Detection Technology
- Journal Volume
- 32
- Journal Issue
- 9
- Journal Page Range
- p. 1007-1011
- ISSN
- 0258-0934
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 49053895
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- AMPLIFIERS; AMPLITUDES; ANALOG-TO-DIGITAL CONVERTERS; COMPUTERIZED SIMULATION; DATA PROCESSING; DIGITAL FILTERS; FILTERS; FLUCTUATIONS; FREQUENCY SELECTION; NOISE; PERFORMANCE; SAMPLING; SIGNALS; SIGNAL-TO-NOISE RATIO
- Descriptors DEC
- DIMENSIONLESS NUMBERS; ELECTRONIC EQUIPMENT; EQUIPMENT; PROCESSING; SIMULATION; TUNING; VARIATIONS
Optional Information
- Notes
- 9 figs., 5 refs.