Title :
Wide band CAD model for coplanar waveguide using FDTD technique
Author :
Lan, E. ; El-Ghazaly, S.M. ; Nair, E. ; Eisenbeiser, K. ; Ooms, B.
Author_Institution :
Phoenix Corp. Res. Labs., Motorola Inc., Tempe, AZ, USA
Abstract :
The coplanar waveguide (CPW) is one of the most suitable transmission lines for millimeter-wave circuits. This paper presents the development of a very wide band CAD model for the CPW and its discontinuities. The propagation characteristics of CPW and its discontinuities on semiconductor substrates are modeled using the FDTD technique. Empirical equations suitable for implementation in commercial software packages are developed. Several CPW structures were fabricated on GaAs substrates and tested. Very good agreement between the measurement and the model is observed over a wide frequency band, from 1 to 110 GHz.
Keywords :
S-parameters; circuit CAD; coplanar waveguides; finite difference time-domain analysis; integrated circuit design; millimetre wave integrated circuits; millimetre wave propagation; waveguide discontinuities; 1 to 110 GHz; FDTD technique; GaAs; coplanar waveguide; discontinuities; millimeter-wave circuits; propagation characteristics; semiconductor substrates; software packages; wide band CAD model; Coplanar transmission lines; Coplanar waveguides; Distributed parameter circuits; Finite difference methods; Millimeter wave circuits; Semiconductor waveguides; Substrates; Time domain analysis; Transmission line discontinuities; Wideband;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.596657
