Design of S-band bi-phase modulator with high speed and accuracy
-
摘要:
倒相开关是能量倍增器法（SLED）脉冲压缩系统中的关键器件，它的倒相精度和开关速度对脉冲压缩系统的性能有重要影响。设计了一种工作在S波段的精度可调、响应迅速的微带反射式倒相开关，并对其进行了理论分析，电路结构设计和仿真研究。对倒相开关的反射终端进行了改进设计，利用一个变容二极管来代替传统的并联枝节电路，通过调节变容二极管的偏置电压改变反射终端的反射系数，从而实现对倒相相位的精确调节。仿真结果表明，倒相开关响应时间约4 ns，且通过调节变容二极管偏置电压可以在一定范围内调节倒相精度。
Abstract:Bi-phase modulator is one important component in SLAC energy doubler (SLED) pulse compression systems. Performance parameters such as precision and speed of phase shift have significant impact on SLED. In this paper, an S-band bi-phase modulator with fast speed and adjustable accuracy is presented. Precision of the phase shifter is related to two parallel varactors, controlled by bias voltage. The simulated results show that the proposed bi-phase modulator has a fast switching speed of 4 ns and a high phase shift accuracy.
-
Key words:
- bi-phase modulator /
- SLAC energy doubler /
- pulse compression /
- adjustable accuracy /
- phase shift speed
-
图 5 9 ns时经过倒相和不经过倒相的信号对比
Figure 5. Simulation results of signal at 9 ns with and without phase shift
-
[1] 周传明, 刘国治, 刘永贵, 等. 高功率微波源[M]. 北京: 原子能出版社, 2007.Zhou Chuanming, Liu Guozhi, Liu Yonggui, et al. High-power microwave sources[M]. Beijing: Atomic Energy Press, 2007 [2] Vikharev A L, Petelin M I, Pavelyev V G, et al. High power microwave pulse compressors[C]//4th IEEE International Conference on Vacuum Electronics. 2003: 53. [3] Yushkov Y G, Artemenko S N, Novikov S N, et al. Development of microwave pulse compressors[C]//9th Russian-Korean International Symposium on Science and Technology. 2005: 838-842. [4] Brown P, Syratchev I. 3 GHz barrel open cavity (BOC) RF pulse compressor for CTF3[C]//IEEE MTT-S International Microwave Symposium. 2004: 1009-1012. [5] Artemenko S N, Igumnov V S, Shlapakovsky A S, et al. Compact active S-band microwave compressors for producing rectangular pulses of up to 100ns[J]. IEEE Trans Microwave Theory and Techniques, 2019, 67(2): 597-605. doi: 10.1109/TMTT.2018.2886850 [6] 熊正锋, 宁辉, 陈怀璧, 等. 一种耦合度可调节的微波脉冲压缩装置设计及实验[J]. 强激光与粒子束, 2018, 30:073001. (Xiong Zhengfeng, Ning Hui, Chen Huaibi, et al. Design and experiment of microwave pulse compressor with adjustable coupling coefficient[J]. High Power Laser and Particle Beams, 2018, 30: 073001 doi: 10.11884/HPLPB201830.170469 [7] Xiong Z F, Cheng C, Yu J. Switching speed effect of phase shifter keying in SLED for generating high power microwaves[J]. Chinese Physics C, 2016, 40(1): 1-5. [8] Farkas Z D, Hogg H A. SLED: A method of doubling SLAC’s energy[R]. SLAC-PUB-1453. [9] 沈旭明, 张鹏, 和天慧, 等. 能量倍增器法微波脉冲压缩[J]. 强激光与粒子束, 2010, 22(4):849-852. (Shen Xuming, Zhang Peng, He Tianhui, et al. High power microwave pulse compression of energy doubles[J]. High Power Laser and Particle Beams, 2010, 22(4): 849-852 doi: 10.3788/HPLPB20102204.0849 [10] Pei S L, Li X P, Xiao O Z. Error and jitter effect studies on the SLED for the BEPCⅡ-linac[J]. Chinese Physics C, 2012, 36(5): 456-463. doi: 10.1088/1674-1137/36/5/014 [11] Sherman V, Setter N, Tagantsev A, et al. Digital reflection-type phase shifter based on a ferroeletric planar capacitor[J]. IEEE Microwave and Wireless Components Letters, 2001, 11(10): 407-409. doi: 10.1109/7260.959311 [12] Glance B. A fast low-loss microstrip p-i-n phase shifter[J]. IEEE Trans Microwave Theory and Techniques, 1979, 27(1): 14-16. doi: 10.1109/TMTT.1979.1129551 [13] Glance B, Amitay N. A fast-switching low-loss 12-GHz microstrip 4-PSK path length modulator[J]. IEEE Trans Communications, 1980, 28(10): 1824-1828. doi: 10.1109/TCOM.1980.1094599 [14] Chongcheawchamnan M, Bunnjaweht S, Kpogla D. Microwave I-Q vector modulator using a simple technique for compensation of FET parasitics[J]. IEEE Trans Microwave Theory and Techniques, 2002, 50(6): 1642-1646. doi: 10.1109/TMTT.2002.1006428 [15] Pierret R F. 半导体器件基础[M]. 北京: 电子工业出版社, 2004: 232-244.Pierret R F. Semiconductor device fundamentals[M]. Beijing: Publishing House of Electronics Industry, 2004: 232-244 -
下载:
点击查看大图
计量
- 文章访问数: 1239
- HTML全文浏览量: 404
- PDF下载量: 34
- 被引次数: 0
