A Note on Diffraction and Equivalent Admittance Properties of a Transverse Slit in a Parallel Plate Waveguide Filled with a Homogeneous Dielectric

Jong-Ig LEE  Ji-Hwan KO  Young-Ki CHO  

IEICE TRANSACTIONS on Communications   Vol.E86-B    No.12    pp.3600-3605
Publication Date: 2003/12/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antenna and Propagation
diffraction,  equivalent admittance,  transverse slit,  

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This study examines a slitted parallel plate waveguide (PPW) from the perspective of diffraction and equivalent circuit representation for a narrow slit and radiation, including the surface wave effect, from a wide slit. The fundamental differences between the diffraction and equivalent admittance properties of the slit discontinuities in typical microstrip and waveguide structures are considered by comparing how the waveguide heights of the PPW and dielectric constants filling the inside of the PPW correspond to those of the two structures, respectively.