Dr Jin Zhang
Lecturer (Assistant Professor) in Microwave Electronics
Email: jin.zhang@qmul.ac.uk
School of Electronic Engineering and Computer Science (EECS)
Queen Mary University of London
Mile End Road
London, E1 4NS
UK
I am a lecturer (assistant professor) in microwave electronics in School of EECS at Queen Mary University of London, UK. I teach in the Joint Programme (JP) between QMUL and Beijing University of Posts and Telecommunications (BUPT) for the modules:
- Module EBU6366 (module organiser): Microwave, Millimetre-Wave and Optical Transmission;
- Module EBU5476: Microprocessors for Embedded Computing;
- Module EBU6475: Microprocessor System Design.
My research is focused on high-power micro/millimetre/THz waves with applications in clean energy (nuclear fusion and solar power generation), as well as the applications of THz/optical spectroscopy in astrochemistry, with collaborators at QMUL, in the UK and EU. I have been working on laboratory studies on formation and evolution of prebiotic molecules in the universe by performing complementary novel laboratory experiments at larger facilities, including the free-electron laser FELIX Laboratory (an EPSRC National Research Facility) in the Netherlands, the synchrotron radiation source ASTRID in Denmark, etc. I also work on high-power THz sources using vacuum electron devices (VEDs) driven by pseudospark-sourced electron beams.
Education
PhD in Physical Electronics
Southeast University (Mar 2013-Dec 2018, Nanjing, China)
Thesis: Impact of Thermal State on Backward Wave Oscillation in Helix traveling wave tubes (TWTs)
Southeast University (Aug 2011-Jan 2013, Nanjing, China)
Southeast University (Aug 2007-June 2011, Nanjing, China)
Reviewer of
Publications
Peer-reviewed journal papers- Jin Zhang, Y. Alfadhl, X. Chen, L. Zhang and A. W. Cross, "Design, Simulation, and Cold Test of a W-Band Double Nonparallel Staggered Grating Backward Wave Oscillator,"IEEE Transactions on Electron Devices, vol. 69, no. 10, pp. 5814-5818, Oct. 2022, doi: 10.1109/TED.2022.3195484.
- Jin Zhang, Tianzhong Zhang, Yasir Alfadhl, Senior Member, IEEE, Xiaodong Chen, Liang Zhang, Huabi Yin, and Adrian W. Cross, "Study on Wideband THz Backward Wave Oscillator Driven by Pseudospark-Sourced Sheet Electron Beam," IEEE Transactions on Electron Devices, vol. 67, no. 8, pp. 3395-3402, Aug. 2020. DOI: 10.1109/TED.2020.3005362.
- Jin Zhang, Huiyu Yuan, Yanmei Wang, Changsheng Shen, Ningfeng Bai, Hehong Fan, Xingqun Zhao, Jinjun Feng, and Xiaohan Sun, "Impact of Thermal State on Backward Wave Oscillation in Helix TWT under Operation,"IEEE Transactions on Electron Devices, vol. 65, no.6, 2018, pp.2227-2235. DOI: 10.1109/TED.2017.2786029.
- Jin Zhang, Zhongju Yin, Huiyu Yuan, Hehong Fan, Ningfeng Bai, Changsheng Shen,Xingqun Zhao, Jinjun Feng, Fujiang Liao and Xiaohan Sun, "Equivalent Multi-Sector Analytical Method for High-Frequency Characteristics of Integrated Three-Helix TWT," IEEE Transactions on Plasma Science, vol. 46, no. 5, 2018, pp.1747-1754. DOI: 10.1109/TPS.2018.2822701.
- Jin Zhang, Huiyu Yuan, Xingqun Zhao, Ningfeng Bai, Changsheng Shen, Hehong Fan, Xiaohan Sun, Bo Chen, Jinjun Feng, Tiechang Yan, "Impact of Radial Deviation of Electron Beam on Backward Wave Oscillation in Helix TWT," The Journal of Engineering, vol. 2018, no. 14, 2018, pp.686-688. DOI: 10.1049/joe.2018.0097.
- Liang Zhang, Huabi Yin, Wenlong He, Xiaodong Chen, Jin Zhang, and Adrian W. Cross, "Pseudospark-sourced beam and its application in high-power millimeter-wave generation,"Scientific Reports, vol.11, p.19076, 2021. DOI: 10.1038/s41598-021-98564-x.
- Jie Xie, Liang Zhang, Huabi Yin, Wenlong He, Kevin Ronald, A. D. R. Phelps , Xiaodong Chen, Jin Zhang, Yasir Alfadhl, Xuesong Yuan, Lin Meng, and Adrian W. Cross, "Study of a 0.35 THz Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam,"IEEE Transactions on Electron Devices, vol. 67, no. 2, 2020, pp. 652-658. DOI: 10.1109/TED.2019.2957760.
Peer-reviewed conference papers
- Jin Zhang, Lei Zhang, Jinyan Wang, Yanmei Wang, Xiaohan Sun*, Jinjun Feng, Baoliang Hao, "A Novel Method for Testing the Inner Temperature of Helix TWT under Operation using FBG," 2019 IEEE International Vacuum Electronics Conference (IVEC), Busan, Korea (South), 2019, pp. 1-2.
- Jin Zhang, Jinyan Wang, Xiaohan Sun*, Baoliang Hao, Lei Zhang, Yanmei Wang, Jinjun Feng, "Impacts of an embedded fiber inside a Helix TWT on its performance," 2018 IEEE International Vacuum Electronics Conference (IVEC), Monterey, CA, USA, 2018, pp. 341-342.
- Jin Zhang, Huiyu Yuan, Xingqun Zhao, Ningfeng Bai, Changsheng Shen, Hehong Fan, Xiaohan Sun*,Bo Chen, Jinjun Feng, Tiechang Yan, "Full Thermal Analyses for Slow-Wave Structure in Helix-TWT under Operation," 2017 IEEE International Vacuum Electronics Conference (IVEC), London, UK, 2017, pp. 1-2.
- Jin Zhang, Feng Wang, Huiyu Yuan, Ningfeng Bai, Hehong Fan, Xiaohan Sun*, Bo Chen, Jinjun Feng, Tiechang Yan, "Impacts of cubic Boron Nitride (CBN) support rods on TWT performance," 2016 IEEE International Vacuum Electronics Conference (IVEC), Monterey, CA, USA, 2016, pp. 1-2.
- Jin Zhang, Feng Wang, Huiyu Yuan, Pu Wei, Xiaohan Sun*, Yanmei Wang, Bo Chen, Jinjun Feng, Tiechang Yan, "Impact of FBG array embedded on/in helix support rods on TWT performance," 2015 IEEE International Vacuum Electronics Conference (IVEC), Beijing, China, 2015, pp. 1-2.
- Jin Zhang, Yasir Alfadhl, Xiaodong Chen, "Design of Dual-Band High-Power Backward Wave Oscillator using Double Staggered Grating and Pseudospark-Sourced Sheet Beam," 2021 14th IEEE UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT), Lancaster, UK, 2021, pp. 1-3.
- Jin Zhang, Huabi Yin, Tianzhong Zhang, Yasir Alfadhl, Xiaodong Chen*, Adrian Cross, Wenlong He and Jie Xie, "Design of 0.365-THz Backward Wave Oscillator using Staggered Double Grating SWS and Sheet Beam," 2019 12th IEEE UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT), London, UK, 2019, pp. 1-3.
- Jinyan Wang, Jin Zhang,Suiren Wan and Xiaohan Sun, "Effect of Thermal Deformation on Thermal Contact Resistance Between Helix and Support Rods in Helix TWT," 2019 International Vacuum Electronics Conference (IVEC), Busan, Korea (South), 2019, pp. 1-2.
- Jinyan Wang, Jin Zhang, Suiren Wan and Xiaohan Sun, "Performance analysis for segmented multiple support rods helix TWT suppressing thermal deformation," 2018 IEEE International Vacuum Electronics Conference (IVEC), Monterey, CA, USA, 2018, pp. 127-128.
Activities
- General Secretary of 2020 National Vacuum Electronics Conference (NVEC 2020), London, UK, 9 November 2020.
- Session Chair: "Millimeter wave sources and applications", at 2019 National Vacuum Electronics Conference (NVEC 2019), Glasgow, UK, 13 November 2019.
- Local Co-Organiser of 2019 12th IEEE UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT 2019), London, UK, 20-22 August 2019.
Projects
- EPSRC Project: EP/S009582/1 SHeet Electron beam vacuum eLectronic DevIces
for the Generation of High-power THz radiation (SHED_LIGHT_THz):
Development of a kW high-power, 365GHz backward-wave oscillator (BWO) with 10% bandwidth which is difficult to reach with solid-state devices, enabling a wide range of THz wave applications such as sub-millimetre wave radar and THz magnetic resonance spectroscopy and spectroscopy of materials.
- Impact of Thermal State on Backward Wave Oscillation in Helix traveling wave tubes (TWTs):
Carried out multiphysics analysis on TWT performance, including beam-wave interaction analysis, thermal analysis, mechanical analysis; found that thermal deformation due to temperature rise could be one of the contributing factors to backward wave oscillation; analysed the effects of transverse offset of the electron beam on BWO.
- Testing system for thermal contact resistance in helix traveling wave tubes:
Tested the temperature on the helix with fiber Bragg grating (FBG) sensors; tested the temperature on the tube shell with thermocouples; calculated the thermal contact resistance using the temperatures on different components. analysed the contacting condition between the supporting rods and the helix.