A new IQ detection method for LLRF
文献类型：期刊论文
| 作者 | Qiu F(邱丰); Gao J(高杰) ; Lin HY(林海英); Qiu, F; Gao, J; Lin, HY; Liu, R; Ma, XP; Sha, P; Sun, Y
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| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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| 出版日期 | 2012 |
| 卷号 | 675页码:139-143 |
| 关键词 | LLRF IQ detection IIR filter RLC circuit DDS |
| 英文摘要 | Digital LLRF technology has been widely used in new generation particle accelerators. IF quadrature sampling is a common method for amplitude and phase detection. Many strategies, which obey the same rule of f(sample) = (M/N)f(IF) (M/N is a rational number), have been proposed to reduce the effects of spectrum aliasing. However, we found that M/N does not need to be a rational number according to Shannon's theorem. Therefore, we propose a new IQ detection method in this paper. This method is based on a special IIR filter which is derived from an RLC circuit. The unique characteristic of the method is that the value of f(IF) is independent of the value of, f(sample). We have set up an experimental platform to verify our method. A 122.88 MHz sampling clock is used to sample a 3 MHz IF signal. The DOS and PI control techniques are used to realize the closed-loop control. Results show that the stability of the system is within +/- 0.05% (peak to peak) for the amplitude, and with +/- 0.03 degrees (peak to peak) for the phase in 5 h. (C) 2012 Elsevier B.V. All rights reserved. |
| 学科主题 | Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy |
| 收录类别 | SCI |
| WOS记录号 | WOS:000302973600021 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/223865]  |
| 专题 | 高能物理研究所_加速器中心 |
| 推荐引用方式 GB/T 7714 | Qiu F,Gao J,Lin HY,et al. A new IQ detection method for LLRF[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2012,675:139-143. |
| APA | 邱丰.,高杰.,林海英.,Qiu, F.,Gao, J.,...&徐波.(2012).A new IQ detection method for LLRF.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,675,139-143. |
| MLA | 邱丰,et al."A new IQ detection method for LLRF".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 675(2012):139-143. |
入库方式： OAI收割
来源：高能物理研究所
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