Title :
Full-wave analysis of discontinuities in conductor-backed coplanar waveguides using the method of lines
Author :
Chung, Shyh-Jong ; Chrang, Tun-Ruey
Author_Institution :
Inst. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
9/1/1993 12:00:00 AM
Abstract :
A three-dimensional analysis using the method of lines with nonequidistant discretization is described to investigate the discontinuities in shielded conductor-backed coplanar waveguides (CBCPW´s). An extended approach concerning the treatment of the boundary conditions at the input and output ports is proposed in which the reflection and transmission coefficients can be directively obtained in a single calculation. The validity and convergence of the numerical results are checked and gaps with various shapes in CBCPW´s are analyzed and compared. Finally, the frequency response of a simple step discontinuity is calculated as an application to nonsymmetrical structures
Keywords :
S-parameters; boundary-value problems; convergence of numerical methods; finite difference methods; frequency response; waveguide theory; CBCPW; boundary conditions; conductor-backed coplanar waveguides; convergence; discontinuities; finite difference expressions; frequency response; full-wave analysis; method of lines; nonequidistant discretization; nonsymmetrical structures; reflection coefficients; step discontinuity; three-dimensional analysis; transmission coefficients; Boundary conditions; Coplanar waveguides; Equations; Impedance; Magnetic analysis; Microstrip; Reflection; Transmission line discontinuities; Waveguide discontinuities; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
