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, 43:33 | Cite as

Design data for quick development of folded H plane tee at high average power level

  • Harish V Dixit
  • Aviraj R Jadhav
  • Yogesh M Jain
  • Alice N Cheeran
  • Vikas N Gupta
  • P K Sharma
Article

Abstract

At high average power level, waveguide-based structures are indispensable in microwave systems due to their higher power handling capacity. These structures are often used to perform power division and combination operation. Folded H plane tee is one of the many components that can be used for the power division application. Its advantage is that the output arms and input arms are in a single plane along a single axis, thus taking less space in the overall system. However, their proper thermal management is indispensable for its use, as high surface temperature of the waveguide reduces its power handling capacity at high power level. This paper presents quick, easy design steps and methodology for obtaining the structure of a folded H plane tee at any given frequency of operation. Further, a scheme for the thermal management for high input power level (500 kW continuous wave) is presented. The proposed methodology is tested at various frequencies in COMSOL Multiphysics, CST Microwave Studio and HFSS with excellent results. A prototype structure was fabricated for use at 3.7 GHz, which exhibited good agreement with the simulation results.

Keywords

Design methodology microwave devices stress thermal management waveguide junction 

Notes

Acknowledgements

We thank the Board of Research in Nuclear Sciences-Plasma and Fusion Research Committee (BRNS-PFRC) for supporting the project with Grant [39/02/2015]. We would also like to thank P R Parmar and the workshop team at Institute for Plasma Research, Gandhinagar, for all the support extended for fabricating the structure.

References

  1. 1.
    Hillairet J et al 2011 RF modeling of the ITER-relevant lower hybrid antenna. Fusion Eng. Des. 86: 823–826CrossRefGoogle Scholar
  2. 2.
    Hillairet J et al 2012 Lower hybrid antennas for nuclear fusion experiments. In: Proceedings of the 6th European Conference on Antennas and Propagation (EUCAP), Prague, pp. 1–4Google Scholar
  3. 3.
    Ekedahl A et al 2011 Long pulse operation with the ITER-relevant LHCD antenna in Tore Supra. AIP Conf. Proc. 1406: 399–406CrossRefGoogle Scholar
  4. 4.
    Ridolfini V P et al 2004 Experimental test of an ITER-like passive active multijunction lower hybrid RF launcher on the FTU Tokamak. In: Proceedings of the 31st EPS Conference on Plasma Physics, London, vol. 28G, p. 2.105Google Scholar
  5. 5.
    Olivier J C and McNamara D A 1992 Analysis of multiport rectangular waveguide devices using pulsed finite-difference time-domain (FDTD) technique. Electron. Lett. 28(2): 129–131CrossRefGoogle Scholar
  6. 6.
    Panda D K and Chakraborty A 2008 Analysis of folded H-plane tee junction using multiple cavity modeling technique. In: Proceedings of the IEEE Region 10 and the Third International Conference on Industrial and Information Systems, vol. 214, pp. 1–6Google Scholar
  7. 7.
    Yang S and Fathy A E 2009 Design equations of arbitrary power split ratio waveguide T-junctions using a curve fitting approach. Int. J. RF Microw. Comput. Aided Eng. 19(1): 91–98Google Scholar
  8. 8.
    Marcuvitz N 1951 Waveguide handbook. New York: McGraw-Hill Book CompanyGoogle Scholar
  9. 9.
    Ragan G L 1948 Microwave transmission circuits. New York: McGraw-Hill Book CompanyGoogle Scholar
  10. 10.
    Pozar D M 2009 Microwave engineering. Hoboken: WileyGoogle Scholar

Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  • Harish V Dixit
    • 1
  • Aviraj R Jadhav
    • 2
  • Yogesh M Jain
    • 3
  • Alice N Cheeran
    • 1
  • Vikas N Gupta
    • 2
  • P K Sharma
    • 3
  1. 1.Veermata Jijabai Technological InstituteMumbaiIndia
  2. 2.Vidyavardhini’s College of Engineering and TechnologyVasaiIndia
  3. 3.Institute for Plasma Research, HBNIGandhinagarIndia

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