Title :
Effects of conductor edge profile on transmission properties of conductor-backed coplanar waveguides
Author :
Zhu, Lei ; Yamashita, Eikichi
Author_Institution :
Univ. of Electro-Commun., Tokyo, Japan
fDate :
4/1/1995 12:00:00 AM
Abstract :
A boundary integral equation method is applied to the full-wave analysis of conductor-backed coplanar waveguides with a rectangular or trapezoidal conductor cross-section. Due to a particular choice of Green´s functions for each subregion defined in a given cross-section, electromagnetic fields in each subregion are analytically expressed in terms of equivalent magnetic currents on apertures and resulting integration contours are defined only on aperture surfaces. Consequently, this approach can overcome relative convergence problems even in the case of largely different aperture widths among subregions. Numerical data show that this approach has a stable convergence property and requires a short computation time. Numerical results obtained with this approach are in excellent agreement with other available theoretical data. A series of calculated data for some rectangular and trapezoidal conductor configurations are provided to show the effects of conductor edge profile on transmission properties of conductor-backed coplanar waveguides
Keywords :
Green´s function methods; boundary integral equations; convergence of numerical methods; coplanar waveguides; waveguide theory; Green´s functions; aperture surfaces; aperture widths; apertures; boundary integral equation method; computation time; conductor edge profile; conductor-backed coplanar waveguides; electromagnetic fields; equivalent magnetic currents; full-wave analysis; integration contours; rectangular conductor cross-section; stable convergence property; subregion; transmission properties; trapezoidal conductor cross-section; Apertures; Conductors; Coplanar waveguides; Electromagnetic analysis; Electromagnetic fields; Electromagnetic waveguides; Green´s function methods; Integral equations; Magnetic analysis; Rectangular waveguides;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
