阮存军
博士 教授 博士生导师
北京航空航天大学 电子信息工程学院
长期从事新型毫米波和太赫兹电子器件及其应用电子系统的研究与关键技术攻关工作,研究方向涵盖集成微波电子学、集成微纳真空电子学、太赫兹电子学、大功率毫米波和太赫兹器件、电子注测量与分析等方面研究工作。
个性化签名
- 姓名:阮存军
- 目前身份:在职研究人员
- 担任导师情况:博士生导师
- 学位:博士
-
学术头衔:
博士生导师
- 职称:高级-教授
-
学科领域:
微波技术
- 研究兴趣:长期从事新型毫米波和太赫兹电子器件及其应用电子系统的研究与关键技术攻关工作,研究方向涵盖集成微波电子学、集成微纳真空电子学、太赫兹电子学、大功率毫米波和太赫兹器件、电子注测量与分析等方面研究工作。
阮存军,1974年8月生,博士,教授,博士生导师。
1991-1997年,在清华大学获理学学士学位;1997-2003年,在清华大学同时获理学硕士和博士学位;2001-2002年,在德国Muenster大学进行为期半年的合作研究;2003-2014年,在中国科学院电子学研究所工作;2014年至今,在北京航空航天大学电子信息工程学院工作。
长期从事新型毫米波和太赫兹电子器件及其应用电子系统的研究与关键技术攻关工作,研究方向涵盖集成微波电子学、集成微纳真空电子学、太赫兹电子学、大功率毫米波和太赫兹器件、电子注测量与分析等方面研究工作。先后主持和完成科研项目共18项,包括国家自然科学基金优秀青年科学基金项目和面上项目和青年基金4项,国家863计划4项,预研和基础科研3项,中科院重大科研装备研制和中科院重点实验室自立项目4项,中科院青年创新促进会项目和中科院前沿领域创新项目3项。在国内外重要期刊和学术会议上共发表相关论文160余篇;申请发明专利25项,授权发明专利18项。
主要研究领域
• 毫米波和太赫兹辐射源与放大器研究
• 微纳集成真空电子器件与系统集成
• 半导体真空晶体管器件与系统集成
• 太赫兹谱学与成像系统研究
• 毫米波和太赫兹波与物质相互作用研究
获得主要荣誉
• 2016年度“科学中国人(2016)年度杰出青年科学家奖”获得者
• 2016年度“北京航空航天大学青年拔尖人才支持计划”获得者
• 2013年度“中国科学院电子学研究所菁英人才计划”获得者
• 2012年国家自然科学基金优秀青年科学基金项目获得者
• 2011年度“中国科学院杰出科技成就奖(集体奖)”获得者
• 2010年度“中国科学院卢嘉锡青年人才奖”获得者
社会学术兼职
• IEEE (国际电气和电子工程师协会) Senior Member
• 中国国电子学会高级会员;
• 中国电子学会青年科学家俱乐部会员
• 中国科学院青年创新促进会会员。
-
主页访问
102
-
关注数
0
-
成果阅读
571
-
成果数
8
物理学报,2011,60(8):084105
2011年04月20日
大宽高比的非轴对称带状电子注在微波和毫米波真空电子器件中具有显著的技术优势与应用潜力.采用轴向均匀磁场可以聚焦和传输带状电子注,且具有易于实现电子注与磁场的匹配和调节、聚焦强流电子注以及无传输截止电压限制等优点,但面临严重的Diocotron不稳定性.结合单粒子模型理论和冷流模型理论,对带状电子注传输特性进行的研究及其数值计算表明,通过详细设计带状注电子光学系统物理参数,增强聚焦磁场并在传输通道高度方向上选择较大的电子注填充比,可以有效降低Diocotron不稳定性对带状电子注的影响,并实现其长距离稳定传输.通过对应用于W波段带状注器件的电子枪及电子光学系统三维仿真和参数优化,解决了小尺寸和高精度结构所带来的对准、装配和焊接等工艺与技术问题,完成了带状电子注聚焦与传输实验高真空密封束管的研制.实验获得的电子枪压缩和成形的椭圆带状电子注截面为10mm×0.7mm,且在电子注电压为20—80kV,电流为0.64—4.60A时,在长度为90mm的漂移通道内带状电子注传输的通过率达到95%以上.该结果优于目前国际上采用周期永磁聚焦进行带状电子注传输通过率92%的实验结果.
无
0
-
46浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用
红外与毫米波学报,-0001,31(6):510-516
-1年11月30日
通过冷流模型理论对均匀场聚焦带状电子注的传输进行了研究,结果表明,通过增强聚焦磁场并提高电子注填充高度因子,可以有效降低Diocotron不稳定性并实现长距离的稳定传输.结合理论研究,对均匀场聚焦带状注电子光学系统进行了三维仿真设计与优化,利用自主开发的二维非线性注波互作用程序SBK2D,对W波段带状注速调管进行了初步分析,结果为输出峰值功率69 kW、效率24%、增益37dB、3dB带宽100 MHz.研制出的具有高机械对准精度的带状注速调管电子束管,带状注截面10 mm×0.5 mm,且在电子注电压20~82 kV,电流0.50~4.27A,长度100 mm的漂移通道内电子注传输直流通过率达到98%以上,高于之前在90 mm漂移通道内获得的95%的实验结果.
无
0
-
60浏览
-
0点赞
-
0收藏
-
0分享
-
1下载
-
0评论
-
引用
【期刊论文】Complete eigenmode analysis of a ladder-type multiple-gap resonant cavity
Chinese Physics B,2014,23():088401
2014年06月10日
A theoretical model is developed for calculating the eigenmodes of the multi-gap resonant cavity. The structure of concern is a kind of ladder-type circuit, offering the advantages of easy fabrication, high characteristic impedance (R/Q), and thermal capacity in the millimeter wave to THz regime. The eigenfunction expansion method is used to establish the field expressions for the gaps and the coupling region. Then, the match conditions at the interface are employed, which leads to a group of complicate boundary equations in the form of an infinite series. To facilitate the mathematical treatments and perform a highly efficient calculation, these boundary equations are transformed into the algebraic forms through the matrix representations. Finally, the concise dispersion equation is obtained. The roots of the dispersion equation include both the axial modes in the gaps, which include the fundamental and the high-order modes, and the cavity modes in the coupling region. Extensive numerical results are presented and the behaviors of the multi-gap resonant cavity are examined.
无
0
-
68浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用
IEEE Transactions on Plasma Science,2013,42(1): 91 - 98
2013年12月16日
In this paper, a multigap extended output cavity was designed by 3-D simulations, which served as the output cavity for a W-band sheet-beam extended interaction klystron (SBEIK). In our numerical design, the circuit dimensions were systematically optimized by parametric finite-difference time-domain simulations, and the equivalent circuit for the output cavity was also analyzed. The proper external loading was selected by using a region of loss in 3-D, and the output power was optimized. The results were verified by using the coupler and the waveguide. The 2π mode of the optimized five-gap extended output cavities had an ohmic Q (Q 0 ) of 1343.5, an external Q (Q e ) of 501.6, and a loaded Q (Q L ) of 365.2 at 94.5 GHz. The 3-D particle-in-cell simulations predict that the output cavity of the SBEIK (75 kV and 4 A) can stably produce more than 50 kW of output power using a prebunched beam.
无
0
-
88浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用
【期刊论文】Researches on an X-Band Sheet Beam Klystron
IEEE Transactions on Electron Devices ,2013,61(1):151 - 158
2013年12月11日
This paper reports the research work of an X-band sheet beam klystron with the aim of principle verification, which is fulfilled at the Institute of Electronics, Chinese Academy of Sciences. This paper includes two phases. The first phase is planned to build the sheet beam electron optics prototype tube using the closed periodically cusped magnetic focusing. The measured data shows that the rectangular beam with the cross section of 50 mm × 4 mm can propagate through ~ 300 mm from the cathode surface to the collector with the transmission of 92.4% at the voltage of 110 kV. This foregoing work successfully solves the beam formation and transportation and becomes the basis for developing the sheet beam klystron. In the second phase, the high-frequency interaction structure is designed and cold tested. The X-band sheet beam klystron is constructed and hot tested in the full voltage. The amplification characteristic can be observed near the voltage of 125 kV. For the drive power of 0.71 kW and the working frequency of 11.69 GHz, the output power of 2.8 MW is achieved with the 3 dB bandwidth of 30 MHz, and, correspondingly, the gain and the efficiency are 35.96 dB and 32.52%, respectively. At the same time, the beam transmission is 73.3%. An over 93% transmission is realized at the voltage of 135 kV, whereas the oscillation occurs in the tube. This research exhibits that the sheet beam klystron is a promising device for the high-power applications, whereas seeking the measures to overcome the oscillation is still an arduous task in the future.
无
0
-
78浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用
IEEE Transactions on Plasma Science,2015,43(7):2132 - 213
2015年06月03日
A design study for a high-power, high-efficiency, high-growth-rate wideband traveling wave tube (TWT) in W-band using a staggered double-vane slow-wave structure (SWS) combined with three plan alignment pencil beams is described in this paper. The electromagnetic characteristic simulation shows that it has a wide bandwidth, high interaction impedance (about two to three times higher than those of the same structures with the sheet beam scheme), and a more simply designed input/output coupler. 3-D particle-in-cell simulations predict that the TWT can produce over 2000 W of output power from 91 to 95 GHz just using a 52-period two section SWS with a total length of 70.3 mm when the voltage and current of three pencil beams are set to 22 kV and 140 × 3 mA, respectively. The maximum peak output power is about 2256 W with a corresponding gain of 43.5 dB and an electronic efficiency of 12.2% at 94 GHz. The 3-dB bandwidth can be achieved at about 15 GHz with an instantaneous relative bandwidth of about 15.9%. Finally, the comparisons of sheet beam, multiple beam, and single pencil beam staggered double-vane TWT are presented and analyzed.
无
0
-
73浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用
IEEE Transactions on Electron Devices,2014,61(7):2523 - 253
2014年05月16日
To study the nonlinear beam-wave interaction for sheet beam klystron (SBK), a 2-D simulation code of SBK2D, based on the 2-D rod macroparticle model, has been designed and realized thoroughly in this paper. In our physical model, the sheet beam is simulated by a series of rods with nonzero thickness and length in y and z directions, respectively (y is the direction of sheet beam's narrow dimension, and z is the direction of beam motion). Then, the space-charge forces between the rod macroparticles are calculated by Green's functions approach, and the port-approximation methods are employed to simulate high-frequency fields for each cavity. Furthermore, the relativistic Lorentz motion equation is solved to obtain the parameters for further macroparticle motion, and the specific criterions are introduced to deal with the sheet beam interception problem by the tunnel and cavities. To verify our simulation code, an eight-cavity W-band SBK has been designed, calculated, and analyzed by SBK2D in detail. The good consistency between SBK2D and 3-dimensional Particle in Cell (3-D PIC) program indicates the reliability of the physical model and simulation code for our program. In addition, the calculation time of SBK2D is only about 1% of that of the 3-D PIC, which makes it more feasible and efficient to calculate and optimize the initial physical parameters for the design of complicated SBK.
无
0
-
77浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用
IEEE Transactions on Electron Devices ,2014,61(6):1643 - 165
2014年02月06日
In this paper, the cold-fluid model theory of an intense sheet electron beam is developed to investigate the diocotron instability during its transport in a uniform magnetic field. The model shows that if the magnetic field strength and the beam filling factor are increased separately, the diocotron instability will be suppressed, which extends the sheet-beam transport distance effectively. To verify the above conclusion, a set of complicated instruments, the electron beam measuring and analyzing system (EBMAS), was developed to measure the beam cross section, beam current density, and the 3-D trajectory. The sheet electron beam transport process in a uniform magnetic field with its diocotron instability is investigated on the basis of EBMAS measurements. The measured results agree very well with theoretical calculation and numerical simulation. A sheet-electron-beam tube based on a uniform magnetic field was then manufactured to drive a future W-band sheet-beam klystron (WSBK). Tuning the sheet-beam parameters over a broad range, including a cathode voltage range of 20-82 kV, current range of 0.5-4.27 A, and with a beam cross section of about 10 mm × 0.5 mm, the experimental beam transmission rate is above 98% through a beam tunnel of 100 mm in length.
无
0
-
81浏览
-
0点赞
-
0收藏
-
0分享
-
0下载
-
0评论
-
引用