| 基于FPGA的能量倍增器相位翻转系统的研制 |
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| 引用本文： | 刘勇涛, 黄贵荣, 尚雷, 等. 基于FPGA的能量倍增器相位翻转系统的研制[J]. 强激光与粒子束, 2015, 27: 085103. doi: 10.11884/HPLPB201527.085103 |
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| 作者姓名： | 刘勇涛 黄贵荣 尚雷 林宏翔 李超 赵周宇 杜百廷 |
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| 作者单位： | 1.中国科学技术大学 国家同步辐射实验室, 合肥 230029 |
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| 摘 要： | 介绍了基于可编程逻辑门阵列（FPGA）的能量倍增器（SLED）相位翻转系统。该系统主要由微波IQ调制器、FPGA和高速DAC组成。在FPGA的控制下,DAC输出两路双极性脉冲电平信号,加载于调制器的IQ端,将微波连续波输入信号转变为4 s脉冲输出信号,并且在3 s时刻微波相位发生180跳变。经测试,相位翻转精度为1802,翻转相位的长期稳定度优于0.5；相位翻转系统驱动的6台SLED的输出功率增益均超过7 dB,最高达到7.54 dB,增益的长期稳定度达到0.1 dB。
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| 关 键 词： | 直线加速器 能量倍增器 相位翻转 IQ调制器 FPGA |
| 收稿时间： | 2015-04-28 |
| 修稿时间： | 2015-06-16 |
SLED phase reverse system based on FPGA |
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| Liu Yongtao, Huang Guirong, Shang Lei, et al. SLED phase reverse system based on FPGA[J]. High Power Laser and Particle Beams, 2015, 27: 085103. doi: 10.11884/HPLPB201527.085103 |
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| Authors: | Liu Yongtao Huang Guirong Shang Lei Lin Hongxiang Li Chao Zhao Zhouyu Du Baiting |
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| Affiliation: | 1. National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China |
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| Abstract: | This paper introduces the phase reverse system designed for SLAC Energy Doubler (SLED) based on Field Programmable Gate Array (FPGA). The phase reverse system is composed of a microwave IQ vector modulator, a FPGA board with the high speed DAC unit. Modulated by the DAC output pulse signal, the IQ modulator transforms the RF CW input signal into 4 s pulse output signal, whose phase is reversed to 180 at the moment of 3 s. The test results show that the phase reversal accuracy is about 1802, and the stability is better than 0.5. The RF power gains of six SLEDs are more than 7 dB, the maximum 7.54 dB is achieved. The long-term variation of the power gain is 0.1 dB. |
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| Keywords: | linac SLED phase reverse IQ modulator FPGA |
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