Title :
Radiation characteristics of dielectric-coated coaxial waveguide periodic slot with finite and zero thickness
Author :
Lee, Chang-Won ; Son, Hyun
Author_Institution :
Dept. of Electron., Kyungpook Nat. Univ., Taegu, South Korea
fDate :
1/1/1999 12:00:00 AM
Abstract :
The leaky wave radiated from the dielectric-coated coaxial waveguide periodic slot with finite and zero thickness is investigated theoretically for the infinite and finite periodic structures. For the infinite periodic structure, mode-matching technique and integral equation method are applied to the analysis of finite and zero thickness slot cases, respectively. The integral equations are derived for the finite periodic structure by use of the Fourier transform and mode expansion and simultaneous linear equations are obtained. The effects of the slot thickness, the finite slot number and the dielectric coating are analyzed. Results for finite periodic slots are compared with those of the infinite extent structure and good agreement is found
Keywords :
antenna radiation patterns; coaxial waveguides; integral equations; leaky wave antennas; millimetre wave antenna arrays; mode matching; periodic structures; waveguide theory; Fourier transform; MM wave omnidirectional antenna; dielectric-coated coaxial waveguide periodic slot; finite periodic slots; finite periodic structure; finite thickness; infinite periodic structure; integral equation method; leaky wave antenna; mode expansion; mode matching; mode-matching technique; radiation characteristics; simultaneous linear equations; slot thickness; zero thickness; Boundary conditions; Coatings; Coaxial components; Dielectrics; Integral equations; Leaky wave antennas; Millimeter wave technology; Periodic structures; Transducers; Waveguide theory;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
