SCATTERING AND RADIATION FROM A SLITTED PARALLEL-PLATE WITH RECTANGULAR GROOVES - TE-WAVE

TE-wave scattering and radiation from a slitted parallel-plate wavegui de with rectangular grooves is considered. The Fourier transform and t he mode matching are used to represent the scattered field in terms of the continuous and discrete modes. The simultaneous equations for the discrete modal coefficients are obtained by matching the boundary con ditions. The fast-converging series solutions are presented to evaluat e the far-zone radiation, reflection, and transmission coefficients. T he numerical computations illustrate the angular behaviors of far-zone radiation in terms of the slit size, groove size, and operating frequ ency. The antenna radiation pattern of the slitted parallel-plate is m easured and compared with the theory.