Vol. 12

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2010-05-03

New Formula for the Reflection Coefficient of an Open-Ended Rectangular Waveguide with OR Without an Infinite Flange

By Jong-Heon Kim, Bayanmunkh Enkhbayar, Jae-Hoon Bang, Bierng-Chearl Ahn, and Eun-Jong Cha
Progress In Electromagnetics Research M, Vol. 12, 143-153, 2010
doi:10.2528/PIERM10033104

Abstract

New formulas are presented for the reflection coefficient at the open end of a rectangular waveguide radiating into air including the effect of wall thickness or flange. Existing formulas require significant amount of numerical calculations and do not cover the practical range of waveguide dimensions. Reflection coefficients of open-ended standard waveguides are simulated using commercial electromagnetic software and curve-fitted to derive new formulas. Proposed formulas include the effects of waveguide wall thickness and broad-to-narrow wall aspect ratio. The accuracy of proposed formulas is compared with existing analytical, numerical and experimental results.

Citation


Jong-Heon Kim, Bayanmunkh Enkhbayar, Jae-Hoon Bang, Bierng-Chearl Ahn, and Eun-Jong Cha, "New Formula for the Reflection Coefficient of an Open-Ended Rectangular Waveguide with OR Without an Infinite Flange," Progress In Electromagnetics Research M, Vol. 12, 143-153, 2010.
doi:10.2528/PIERM10033104
http://jpier.org/PIERM/pier.php?paper=10033104

References


    1. Yaghjian, A. D., "Approximate formulas for the far field and gain of open-ended rectangular waveguide," IEEE Trans. Antennas Propagat., Vol. 32, 378-384, 1984.
    doi:10.1109/TAP.1984.1143332

    2. Selvan, K. T., "Studies on the classical gain approximations and the aperture-reflection coefficient of rectangular waveguide antennas," IEEE Trans. Electromag. Compat., Vol. 40, 343-347, 1998.
    doi:10.1109/15.736220

    3. Paramesha, S. and A. Chakraborty, "Waveguide as a near-field measuring probe of the two-element array radiator," Progress In Electromagnetics Research B, Vol. 7, 245-255, 2008.
    doi:10.2528/PIERB08032401

    4. Selvan, K. T. and V. Venkatesan, "A note on the aperture-reflection coefficient of open-ended rectangular waveguide," IEEE Trans. Electromag. Compat., Vol. 45, 663-664, 2003.
    doi:10.1109/TEMC.2003.819069

    5. Selvan, K. T., "Approximate formula for the phase of the aperture-reflection coefficient of open-ended rectangular waveguide," IEEE Trans. Antennas Propagat., Vol. 52, 318-321, 2004.
    doi:10.1109/TAP.2003.822449

    6. Gardiol, F. E., "Open-ended waveguides: Principles and applications," Advances in Electronics and Electron Physics, P. W. Hawes, Ed., Academic Press, London, Vol. 63, 139-187, 1985.

    7. Hasar, U. C., "Permittivity determination of fresh cement-based materials by an open-ended waveguide probe using amplitude-only measurements ," Progress In Electromagnetics Research, Vol. 97, 27-43, 2009.
    doi:10.2528/PIER09071409

    8. Bhattacharya, A., S. Gupta, and A. Chakraborty, "Analysis of rectangular waveguides and thick windows as EMI sensors," Progress In Electromagnetics Research, Vol. 22, 231-258, 1999.
    doi:10.2528/PIER98081002

    9. Tan, W. and Z. Shen, "An accelerating technique for analyzing open-ended rectangular waveguides," Microwave Opt. Technol. Lett., Vol. 50, 1061-1066, 2008.
    doi:10.1002/mop.23283

    10. Bois, K. J., A. D. Benally, and R. Zoughi, "Multimode solution for the reflection properties of an open-ended rectangular waveguide radiating into a dielectric half-space: The forward and inverse problems," IEEE Trans. Instru. Measur., Vol. 48, 1131-1140, 1999.
    doi:10.1109/19.816127

    11. Bodnar, D. G. and D. T. Paris, "New variational principle in electromagnetics," IEEE Trans. Antennas Propagat., Vol. 18, 216-223, 1970.
    doi:10.1109/TAP.1970.1139642

    12. Baudrand, H., J.-W. Tao, and J. Atechian, "Study of radiating properties of open-ended rectangular waveguides," IEEE Trans. Antennas Propagat., Vol. 36, 1071-1077, 1988.
    doi:10.1109/8.7219

    13. Shen, Z., C. L. Law, and R. H. MacPhie, "Application of anisotropic PML in mode-matching analysis of open-ended waveguides," IEEE Trans. Magnet., Vol. 38, 733-736, 2002.
    doi:10.1109/20.996190

    14. Chuang, C. W. and P. H. Pathak, "Ray analysis of modal reflection for three-dimensional open-ended waveguides," IEEE Trans. Antennas Propagat., Vol. 37, 339-346, 1989.
    doi:10.1109/8.18730

    15. Serizawa, H. and K. Hongo, "Radiation from a flanged rectangular waveguide," IEEE Trans. Antennas Propagat., Vol. 53, 3953-3962, 2005.
    doi:10.1109/TAP.2005.859748

    16. Das, S. and A. Chakrabarty, "A novel modeling technique to solve a class of rectangular waveguide based circuits and radiators," Progress In Electromagnetics Research, Vol. 61, 231-252, 2006.
    doi:10.2528/PIER06010302