Submit Article
Asian Journal of Physics Vol 32, Nos 9 – 12 (2023) 425-433

Determination of design parameters of SDV-SWS for a planar high power THz-BWO

Vishnu Srivastava
Ex Scientist, Microwave Tubes Division, CSIR-Central Electronics Engineering Research Institute, Pilani-333 031, (Rajasthan), India

Dedicated to Prof B N Basu

Compact, high power, and efficient, planar THz Backward Wave Oscillators (THz-BWOs) with single sheet electron beam and multiple sheet electron beams are investigated. Staggered double-vane loaded rectangular waveguide slow-wave structure (SDV-SWS) is selected for a compact, planar THz-BWO due to its inherent compatibility for sheet beam operation and having high interaction impedance, low circuit loss and large bandwidth. Also, it is easier to fabricate the SDV-SWS by MEMS technology with high precision and surface finish. The structure can also be easily modified by selecting higher-order mode for operation using two or more sheet beams. Simplified analytical approach is presented for determining initial design parameters of SDV-SWS for a high power planar THz-BWO with single sheet beam and multiple sheet beams. The determined initial design parameters of SDV-SWS for planar THz BWOs are found to be in good agreement with the published results that were confirmed using the 3D electromagnetic simulation code CST. © Anita Publications. All rights reserved.
Keywords: THz sources, THz BWO, THz Microscopy, Spectroscopy, Imaging, Radar, Plasma diagnostic.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
Buy this Article in Print © Anita Publications. All rights reserve

References

  1. Srivastava V, THz vacuum microelectronic devices, J Phys Conf Ser, 114(2008)012015;doi. 10.1088/1742-6596/114/1/012015.
  2. Booske J H, Dobbs R J, Joye C D, Kory C L, Neil G R, Park G S, Temkin R J, Vacuum electronic high power terahertz sources, IEEE Trans Terahertz Sci Technol, 1(2011)54–75.
  3. Mikhail G, High Power Vacuum Electronic Devices from Microwave to THz Band: Way Forward, Electronics, 10(2021)2436;org/10.3390/electronics10192436.
  4. Paoloni C, Gamzina D, Letizia R, Zheng Y, Luhmann N C (Jr), Millimeter wave travelling wave tubes for the 21st Century, J Electromagn Waves Appl, 35(2021)567–603.
  5. Srivastava V, Design of a Micro-fabricated Planar Slow-Wave Structure for a 0.22 THz TWT for Communication, Imaging and Remote Sensing, IETE Tech Rev, 36(2019)501–509.
  6. Srivastava V, Sharma D K, Design of broadband planar SWS for 0.22-THz TWT, Univers J Electr Electr, 5(2017) 9–19.
  7. Srivastava V, Design of a 0.22THz 100W Planar TWT for Ultra Wideband Wireless Communication, Electronics & Communications COJ, 1(2018)1–6.
  8. Srivastava V, Srivastava N, Simplified Analytical Approach of Designing Slow-Wave-Structure for a Compact, High Power, Terahertz Source for Spectroscopy, Imaging and Radar, IEEE-ICRAIE International Conference Proceedings, (2018), DOI:https://doi.org/ 10.1109/ICRAIE.2018.8710392.
  9. Liu G, He W, Cross A W, Yin H, Bowes D, Simulation of a G-Band Sheet Beam Backward Wave Oscillator with Double Staggered Metallic Rod Array, J Phys D: Appl Phys, 46(2013)345102; doi.10.1088/0022-3727/46/34/345102.
  10. Xie W, Cheng Z, Luo J, Liu Q, Theory and simulation of arbitrarily shaped grooved staggered double grating array waveguide, IEEE Transactions on Electron Device, 61(2014)1707–1714.
  11. Srivastava V, Micro and nano fabrication technologies for THz vacuum devices, in Proceedings of the International Conference on Nanotechnology for Better Living,3(2016), p. 42, DOI:https:// doi.org/10.3850/978-981-09-7519-7nbl16-rps-42.
  12. Lu Z, Ge W, Wen R, Wang Z, Gong H, Wei Y, Gong Y, 0.2THz traveling wave tube based on the sheet beam and a novel staggered double corrugated waveguide, IEEE Trans Plasma Sci, 48(2020)3229–3237.
  13. Shu G, Liu G, Chen L, Bambarandage H, Qian Z, THz backward wave Radiation from the interaction of high-order mode and double sheet electron beams, J Phys D: Appl Phys, 51(2018)055107; doi. 10.1088/1361-6463/aaa20e.
  14. Shu G X, Liu G, Qian Z F, Simulation study of a high-order mode terahertz radiation source based on an orthogonal grating waveguide and multiple sheet electron beams, Opt Express, 26(2018)8040–8048.
  15. Srivastava V, SUNRAY-1D and SUNRAY-2.5D codes for large signal analysis of TWT, in Proceedings of the IEEE International Vacuum Electronics Conference, 2013, Paris.
  16. Srivastava V, Latha M, Panda P C, Aditya S, Analysis of different structures TWTs using SUNRAY-1D and SUNRAY-2.5D codes, in Proceedings of the IEEE International Vacuum Electronics Conference, 2015, Beijing.
  17. Srivastava V, Nonlinear analysis of beam-wave interaction in a planar THz travelling-wave tube amplifier, J Electromagn Waves Appl, 32(2018)190–203.
  18. Bansal A, Srivastava V, Gupta R, Integrated Model for Design of SWS and Beam-Wave Interaction Analysis of a Planar THz Sheet-beam TWT, Prog Electromagn Res M, 87(2019)179–187.
  19. Titov V N, Ploskih A E, Ryskin N M, Study of Beam-Wave Interaction in a sub THz Traveling-Wave Tube with a Converging Sheet Electron Beam Focused by a Uniform Magnetic Field, Electronics,11(2022)4208; doi.org/10.3390/electronics11244208.

Related Posts