QUASI-STATIC ANALYSIS OF ARBITRARY COPLANAR WAVE-GUIDE STRUCTURES BY COMBINATION OF CONFORMAL MAPPING AND FINITE-DIFFERENCE METHODS

To evaluate the quasistatic parameters of arbitrary coplanar waveguide (CPW) structures, a new numerical approach based on the combination o f the conformal mapping technique and the finite-difference method is presented. The validity and versatility of the proposed method have be en demonstrated by application in thr ee kinds of CPWs: 1) with conduc tor backing, 2) with finite-extent substrate, and 3) with an enclosed shielding box. Compared with the data published in the literature, the numerical results of this method show very good agreement. (C) 1997 J ohn Wiley & Sons, Inc.