Submit Article

Asian Journal of Physics Vol. 33, Nos 9 & 10 (2024) 625-631

Design of a 140 GHz extended interaction klystron

Vemula Bhanu Naidua, Dipanjan Gopeb and Subrata Kumar Dattaa
aMicrowave Tube Research and Development Centre (MTRDC), DRDO, Bengaluru-560 013, India
bDepartment of Electrical Communication Engineering, Indian Institute of Science, Bengaluru -560 012, India
This paper is dedicated to Dr Shrinivas Joshi

Feasibility of an extended interaction klystron amplifier was explored analytically through 3D electromagnetic simulation. A design study of a ladder type interaction circuit for a high-power extended interaction klystron (EIK) operating around 140 GHz was carried out. The beam-wave interaction analysis of the RF interaction structure was carried out using an electron beam accelerating potential of 18 kV and current of 0.6 A at the 2π-mode of operation employing uniform (solenoidal) magnetic focusing. The device is configured using an input cavity, three buncher cavities and an output cavity and the design was optimized through simulation in CST Microwave Studio. Particle-in-cell simulation promises peak output power of ~ 1.6 kW with gain of ~ 49.05 dB and electronic efficiency of ~ 14.8%. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.33.9-10.2024.625-631
Keywords: Extended interaction klystron; Extended interaction klystron, Multi-gap resonant cavity, Particle-in-cell (PIC) simulation.

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

References

  1. Gilmour A S (Jr), Microwave Tubes (Artech House, Norwood, MA, 1986). ISBN: 9780890061817
  2. Chodorow M, Wessel-Berg T, A high-efficiency klystron with distributed interaction, IRE Trans Electron Devices, 8(1961)44–55.
  3. Chodorow M, Kulke B, An extended-interaction klystron: efficiency and bandwidth, IEEE Trans Electron Devices, 13(1966)439–447.
  4. Roitman A, Berry D, Steer B, State-of-the-art W-band extended interaction klystron for the CloudSat program, IEEE Trans Electron Devices, 52(2005)895–898.
  5. Berry D, Deng H, Dobbs R, Horoyski P, Hyttinen M, Kingsmill A, MacHattie R, Roitman A, Sokol E, Steer B, Practical aspects of EIK technology, IEEE Trans Electron Devices, 61(2014)1830–1835.
  6. Booske J H, Dobbs R J, Joye C D, Kory K L, Neil G R, Park G, Park J, Temkin R J, Vacuum electronic high power terahertz sources, IEEE Trans Terahertz Sci Technol, 1(2011)54–75.
  7. Kowalski E J, Shapiro M A, Temkin R J, An overmoded W-Band coupled-cavity TWT, IEEE Trans Electron Devices, 62(2015)1609–1616.
  8. Pasour J, Wright E, Nguyen K T, Balkcum A, Wood F N, Myers R E, Levush B, Demonstration of a multikilowatt, solenoidally focused sheet beam amplifier at 94 GHz, IEEE Trans Electron Devices, 61(2014)1630–1636.
  9. Stephens J C, Rosenzweig G, Shapiro M A, Temkin R J, Tucek J C, Basten M A, Kreischer K E, Subterahertz photonic crystal klystron amplifier, Phys Rev Lett, 123(2019)244801; doi: 10.1103/PhysRevLett.123.244801.
  10. Naidu V B, Gope D, Datta S K, Exploration of a PBG-based cavity structure for a multiple-beam extended interaction klystron, J Electromagn Waves Appl, 37(2023)347–358.
  11. Gilmour A S, Ebrary I, Klystrons, Traveling Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons, (Artech House, Norwood, MA), 2011
  12. Dassault systemes Simulia Electromagnetic-simulation – 2023 manual https://www.3ds.com/products/simulia/electromagnetic-simulation.

Related Posts