Design of  Ka band gyro-TWT high purity input structure

He Youhui; Hu Peng; Chen Hongbin

doi:10.11884/HPLPB202335.220287

Volume 35 Issue 8

Jul. 2023

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2023 > 35(8): 083002

He Xiaozhong, Pang Jian, Zhao Liangchao, et al. A preliminary design of a permanent magnet focused IH type drift tube linac cavity[J]. High Power Laser and Particle Beams, 2015, 27: 075104. doi: 10.11884/HPLPB201527.075104

Citation:

He Youhui, Hu Peng, Chen Hongbin. Design of Ka band gyro-TWT high purity input structure[J]. High Power Laser and Particle Beams, 2023, 35: 083002. doi: 10.11884/HPLPB202335.220287

Citation:

He Youhui, Hu Peng, Chen Hongbin. Design of Ka band gyro-TWT high purity input structure[J]. High Power Laser and Particle Beams, 2023, 35: 083002. doi: 10.11884/HPLPB202335.220287

PDF( 18068 KB)

Design of Ka band gyro-TWT high purity input structure

doi: 10.11884/HPLPB202335.220287

He Youhui^{1, 2
,},
Hu Peng²,
Chen Hongbin^{2
,
,}

1.
Graduate School of China Academy of Engineering Physics, Mianyang 621900, China
2.
Institute of Applied Electronics, CAEP, Mianyang 621900, China

Received Date: 2022-09-09
Accepted Date: 2023-04-01
Rev Recd Date: 2023-05-04

Available Online: 2023-05-16

Publish Date: 2023-08-15

Abstract

Abstract

To realize the high-purity TE₀₁ mode input of the Ka-band cyclotron traveling wave tube, the two-stage power divider TE₀₁ input coupler is improved by adding a filter structure at the output port, and the transmission efficiency of the spurious mode is reduced from the original average of 7% to less than 2%. The main body of the structure is a cascading two-stage Y-type power divider network, which can efficiently realize the conversion of rectangular waveguide TE₁₀ mode to circular waveguide TE₀₁ mode. Based on the theoretical analysis of transmission performance of power divider network based on transmission line theory, and with the help of 3D electromagnetic simulation software, several optimization iterations are carried out, and finally a wideband TE₀₁ input coupler with mode conversion efficiency greater than 99% near the frequency of 31 GHz is obtained, the input coupling structure has a −0.1 dB insertion loss bandwidth of 5 GHz, and the average mode conversion efficiency in the effective frequency band is as high as 98.6%, the mode purity is 99% and the return loss is less than −15 dB. Back-to-back cold test experiments were carried out on the device using vector network analyzer, and the results show that the in-band attenuation is about 0.5 dB, which deviates little from the simulation calculation result, which meets the actual engineering requirements.
- gyro-TWT,
- power distribution network,
- input coupling structure,
- broadband,
- filter structure,
- mode conversion

FullText(HTML)

References(12)

References

[1]	刘盛纲. 电子回旋脉塞和回旋管的进展[M]. 成都: 四川教育出版社, 1988 Liu Shenggang. Progress of electronic cyclotron maser and cyclotron[M]. Chengdu: Sichuan Education Press, 1988
[2]	王丽, 鄢然, 蒲友雷, 等. 高功率毫米波回旋器件的需求及发展[J]. 真空电子技术, 2010(2):21-26 doi: 10.16540/j.cnki.cn11-2485/tn.2010.02.009 Wang Li, Yan Ran, Pu Youlei, et al. Requirement and development of high power millimeter-wave gyrotron device[J]. Vacuum Electronics, 2010(2): 21-26 doi: 10.16540/j.cnki.cn11-2485/tn.2010.02.009
[3]	Chu K R, Barnett L R, Lau W K, et al. A wide-band millimeter-wave gyrotron traveling-wave amplifier experiment[J]. IEEE Transactions on Electron Devices, 1990, 37(2): 1557-1560.
[4]	鄢然. 磁控注入电子枪低频振荡分析及Ka波段回旋行波管研究[D]. 成都: 电子科技大学, 2010 Yan Ran. The analysis of the low frequency oscillation in magnetic injection gun and research on Ka band gyrotron traveling wave tube[D]. Chengdu: University of Electronic Science and Technology of China, 2010
[5]	徐勇, 熊彩东, 罗勇, 等. Ka波段TE₀₁模回旋行波管宽带输入耦合器的设计[J]. 真空科学与技术学报, 2012, 32(3):208-213 doi: 10.3969/j.issn.1672-7126.2012.03.06 Xu Yong, Xiong Caidong, Luo Yong, et al. Design of broad-band input coupler of Ka-band TE₀₁ mode gyro-TWT[J]. Chinese Journal of Vacuum Science and Technology, 2012, 32(3): 208-213 doi: 10.3969/j.issn.1672-7126.2012.03.06
[6]	徐寿喜, 刘濮鲲, 张世昌. Ka波段二次谐波回旋速调管放大器输入耦合器的分析与模拟[J]. 强激光与粒子束, 2004, 16:477-480 Xu Shouxi, Liu Pukun, Zhang Shichang. Analysis and simulation of an input coupler for a Ka-band second harmonic gyroklystron amplifier[J]. High Power Laser and Particle Beams, 2004, 16: 477-480
[7]	乔益民, 兰峰. 220GHz TE10-TE01侧壁耦合模式转换器的研究[J]. 大众科技, 2013, 15(2):1-3 doi: 10.3969/j.issn.1008-1151.2013.02.002 Qiao Yimin, Lan Feng. Investigation of 220GHz TE01-TE10 sidewall coupling mode converter[J]. Popular Science & Technology, 2013, 15(2): 1-3 doi: 10.3969/j.issn.1008-1151.2013.02.002
[8]	Yu C F, Chang T H. High-performance circular TE₀₁-mode converter[J]. IEEE Transactions on Microwave Theory and Techniques, 2005, 53(12): 3794-3798. doi: 10.1109/TMTT.2005.859866
[9]	孙昊, 李浩, 王峨锋, 等. W波段回旋管宽带低损耗输入耦合系统[J]. 强激光与粒子束, 2015, 27:053004 doi: 10.11884/HPLPB201527.053004 Sun Hao, Li Hao, Wang Efeng, et al. Broad band low loss input coupling system in W-band gyrotron[J]. High Power Laser and Particle Beams, 2015, 27: 053004 doi: 10.11884/HPLPB201527.053004
[10]	张强, 袁成卫, 陈俊, 等. 圆波导TE₀₁模激励器设计及实验研究[J]. 强激光与粒子束, 2018, 30:063033 doi: 10.11884/HPLPB201830.170462 Zhang Qiang, Yuan Chengwei, Chen Jun, et al. Investigations on TE₀₁ circular waveguide mode transducer[J]. High Power Laser and Particle Beams, 2018, 30: 063033 doi: 10.11884/HPLPB201830.170462
[11]	Wu Zewei, Liao Xiaoyi, Wang Keqiang, et al. A circular TE₀₂ mode generator with high purity for gyro-TWT study[J]. IEEE Microwave and Wireless Components Letters, 2020, 30(2): 137-140. doi: 10.1109/LMWC.2020.2966071
[12]	朱敏, 罗积润, 栾远涛, 等. 采用矩形到同轴扇形渐变TE₁₀ ^□→TE₀₁ ^⊙模式变换器带宽特性的研究[J]. 电子与信息学报, 2007, 29(6):1508-1510 Zhu Min, Luo Jirun, Luan Yuantao, et al. Bandwidth property of the converter with sector taper from a rectangular guide TE₁₀ ^□ mode to a coaxial guide TE₀₁ ^⊙ mode[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1508-1510

Relative Articles

[1]	Tan Xiao, Deng Li, Zhang Lingyu, Li Rui, Fu Yuanguang, Shi Dunfu, Liu Peng, Yang Chao. Development and tests of functions of proton, low-energy photon and electron transport in JMCT3.0 Monte Carlo particle transport program[J]. High Power Laser and Particle Beams, 2024, 36(9): 096002. doi: 10.11884/HPLPB202436.240117
[2]	Xie Xiucui, Pu Yuehu, Zhao Zhentang. Cold test and beam commissioning of China’s first homemade alternating-phase-focused drift tube linac[J]. High Power Laser and Particle Beams, 2022, 34(8): 084007. doi: 10.11884/HPLPB202234.220014
[3]	Xue Yuanyuan, Wang Zujun, Liu Jing, He Baoping, Yao Zhibin, Liu Minbo, Sheng Jiangkun, Ma Wuying, Dong Guantao, Jin Junshan. Numerical calculation and analysis of proton radiation effects on CCD based on Monte Carlo method[J]. High Power Laser and Particle Beams, 2018, 30(4): 044001. doi: 10.11884/HPLPB201830.170248
[4]	Wang Yuanming, Guo Xiaoqiang, Luo Yinhong, Chen Wei, Wang Yanping, Guo Hongxia, Zhang Fengqi, Zhang Keying, Wang Zhongming, Ding Lili, Yan Yihua, Zhao Wen, Xiao Yao. Calculation of equivalence of proton and neutron displacement damage in silicon[J]. High Power Laser and Particle Beams, 2013, 25(07): 1803-1806. doi: 10.3788/HPLPB20132507.1803
[5]	Yan Fang, Li Zhihui, Tang Jingyu. Preliminary physics design of China Accelerator Driven Sub-critical System main linac[J]. High Power Laser and Particle Beams, 2013, 25(07): 1783-1787. doi: 10.3788/HPLPB20132507.1783
[6]	Chen Xiaoxu, Tang Cuiming, Hong Wei, Gu Yuqiu, He Yingling. Energy spectrum experiment on protons generated by interaction between femtosecond laser and 7 μm copper foil target[J]. High Power Laser and Particle Beams, 2012, 24(10): 2335-2337. doi: 10.3788/HPLPB20122410.2335
[7]	deng derong, zhou lin, shan lijun. Periodic permanent magnetic focusing system for X-band coupled cavity traveling wave tube[J]. High Power Laser and Particle Beams, 2010, 22(04): 0- .
[8]	xiao haiying, li chundong, jia jin, ye bangjiao, yang dezhuang, he shiyu. Slow-positron annihilation analysis on optical degradation of ZnO white paint irradiated by protons[J]. High Power Laser and Particle Beams, 2009, 21(10): 0- .
[9]	huang shaoyan, liu minbo, tang benqi, chen wei, xiao zhigang, wang zujun, zhang yong. Proton irradiation effects on multi-quantum-well laser diodes and their annealing characteristics[J]. High Power Laser and Particle Beams, 2009, 21(09): 0- .
[10]	wu chu-mao, yang jun, . Periodic permanent magnet focusing system for multi-beam traveling wave tube[J]. High Power Laser and Particle Beams, 2008, 20(03): 0- .
[11]	hu quan, huang tao, yang zhong-hai, li bin, li jian-qing, liao li, xiao li, zhu xiao-fang. Design and implementation of periodic permanent magnetic focusing[J]. High Power Laser and Particle Beams, 2008, 20(02): 0- .
[12]	peng jun, fu shi-nian. Design of 7 MeV drift tube linac as injector of proton accelerator for cancer therapy[J]. High Power Laser and Particle Beams, 2008, 20(04): 0- .
[13]	zhu tuo, yang jia-min, wang zhe-bin, zhao yang, zhang ji-yan, hu zhi-min, ding yao-nan. Experimental study about angular distribution of protons emitted from thin solid target irradiated by supershort laser[J]. High Power Laser and Particle Beams, 2008, 20(10): 0- .
[14]	tang cui, gu yu-qiu, zhou wei-min, yang xiang-dong, wen xian-lun, hong wei, wen tian-shu. Measuring energy spectra of proton generated by 100 TW laser-plasma interaction at rear side of target[J]. High Power Laser and Particle Beams, 2007, 19(01): 0- .
[15]	chu jian-hua, zhao zhen-tang. Cavity beam position monitor based on two off-axis resonant cavities by comparison method[J]. High Power Laser and Particle Beams, 2007, 19(10): 0- .
[16]	yue jun-hui, yuan ren-xian, ma li, cao jian-she. Design and simulation of the stripline kicker for the BEPCⅡ transverse feedback system[J]. High Power Laser and Particle Beams, 2004, 16(10): 0- .
[17]	zhou wei-min, gu yu-qiu, ding yong-kun, zheng zhi-jian, cai da-feng, chunyu shu-tai, wen tian-shu, chen hao, jiao chun-ye, ge fang-fang, wang guang-chang, you yong-lu, he ying-ling, . Measurement of proton jet in the interaction of ultra-short ultra-intense laser with Cu foil target[J]. High Power Laser and Particle Beams, 2004, 16(11): 0- .
[18]	ge zhao-yun, lin li-bin. I-V Curve of GaAs photoconduction detector irradiated by double beams of proton[J]. High Power Laser and Particle Beams, 2004, 16(04): 0- .
[19]	he chao-hui, geng bin, yang hai-liang, chen xiao-hua, zhang zheng-xuan, li guo-zheng. Accelerators simulation experiment on single event effects in semiconductor devices[J]. High Power Laser and Particle Beams, 2002, 14(01): 0- .
[20]	yang hai-liang, li guo-zheng, jiang jing-he, he chao-hui, chen xiao-hua. A research for measuring proton fluence with TLD[J]. High Power Laser and Particle Beams, 2001, 13(02): 0- .