RESONANCE IN A SUPERSTRATE-LOADED CYLINDRICAL-RECTANGULAR MICROSTRIP STRUCTURE

The complex resonant frequencies of the cylindrical-rectangular micros trip structure loaded with a dielectric superstrate layer is studied b y using a rigorous full-wave analysis and the numerical results are ob tained by using the Galerkin's moment method calculation. The numerica l convergence for the selected sinusoidal basis functions with and wit hout the edge singularity condition is also discussed. Numerical resul ts for the dependence of the real and imaginary parts of the complex r esonant frequencies on the superstrate permittivity and thickness are calculated and analyzed, which are also compared with those obtained f or the planar microstrip structure.