NUMERICAL-ANALYSIS OF DIELECTRIC ROD WAVE-GUIDE WITH CORRUGATION OF NONINTEGRAL-RATIO PERIOD WAVES

The dielectric rod waveguides with corrugation consisting of nonintegr al-ratio period waves are investigated numerically. The leakage charac teristics of HE(11)-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 wavegui de with corrugation agrees well with the calculated value. The depende nce of radiation characteristics on the corrugation form is discussed. It is shown that the leakage directions and the intensity of leaky wa ves are controlled independently one another. The radiation pattern ca n be synthesized by choosing the geometric parameters of the corrugati on properly.