Analysis of spherical hybrid modes in a corrugated conical horn

Analysis of spherical hybrid modes in a corrugated conical horn

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An approximate analysis of fields in a corrugated horn is considered using spherical hybrid modes. Under the special condition where the slots are about a quarter-wavelength deep, the approximations are slight in the far-field region of the horn. Solutions are presented for the lowest-order spherical hybrid modes, and a procedure is described for the determination of the horn radiation pattern. A first step in the procedure involves the calculation of the hybrid-mode field in the horn aperture. Because diffraction will be minimal in wide-angle corrugated horns, the aperture and radiation patterns should be similar when the far-field approximation applies. This feature is verified for a 120° horn making use of experimental results due to Kay.


    1. 1)
      • Kay, A.F.: `The scalar feed', contract AF19(604)-8057, TRG report, March 1964.
    2. 2)
      • H.C. Minnett , B.M. Thomas . A method of synthesizing radiation patterns with axial symmetry. IEEE Trans. , 654 - 656
    3. 3)
      • G. Bryant . Propagation in corrugated waveguides. Proc. IEE , 203 - 213
    4. 4)
      • P.J.B. Clarricoats , P.K. Saha . Theoretical analysis of cylindrical hybrid modes in a corrugated horn. , 187 - 189
    5. 5)
      • James, J., Longdon, L.: `Predication of arbitrary electromagnetic fields from measured data', URSI symposium on electromagnetic theory, 1968, Stresa, Italy, to be published in Alta Frequenza symposium issue, April 1969.
    6. 6)
      • A.J. Simmons , A.F. Kay . The scalar feed—a high performance feed for large paraboloid antenna. IEE Conf. Publ. 21 , 213 - 217
    7. 7)
      • (1945) , Tables of associated Legendre functions.
    8. 8)
      • Saha, P.K.: `Tables of associated Legendre functions for scalar feed applications', research report, April 1969.
    9. 9)
      • P.D. Potter . Application of spherical wave theory to Cassegrainianfed paraboloids. IEEE Trans. , 727 - 735

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