Numerical Analysis of Dielectric Rod Waveguide with Corrugation of Nonintegral-Ratio Period Waves

Hiroshi KUBO  Kimihisa FUKUSHIMA  Ikuo AWAI  

IEICE TRANSACTIONS on Electronics   Vol.E78-C   No.10   pp.1402-1408
Publication Date: 1995/10/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electromagnetic Theory)
dielectric rod waveguide,  corrugation,  radiation pattern,  numerical analysis,  electromagnetic theory,  microwave and millimeter wave technology,  

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The dielectric rod waveguides with corrugation consisting of nonintegral-ratio period waves are investigated numerically. The leakage characteristics of HE11-type wave in the waveguide is analyzed by applying Yasuura's method. The complex propagation constants and the far field patterns are presented. The radiation pattern of a fabricated waveguide with corrugation agrees well with the calculated value. The dependence of radiation characteristics on the corrugation form is discussed. It is shown that the leakage directions and the intensity of leaky waves are controlled independently one another. The radiation pattern can be synthesized by choosing the geometric parameters of the corrugation properly.