Quasistatic solutions of elliptical coplanar waveguides

Abstract

Fast, accurate, and simple closed‐form expressions are presented for calculating the quasistatic TEM parameters of elliptical coplanar waveguides. The effect of the elliptical curvature of the present CPW structure on the line parameters is investigated by using the formulas derived by conformal mapping techniques. It has been shown that both the eccentricity and the parameter p=a2−a1 lead to a significant change of the quasi‐TEM parameters. Comparisons are also made between the present results and the results available in the literature for both cylindrical and planar CPWs. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 20: 385–389, 1999.

Method of moments modelling of cylindrical microwave integrated circuits interconnections

“…The thickness of the substrate along the major axis is p ¼ a 2 À a 1 : 13 and 14 show the characteristic impedance Z 0 and the effective permittivity e eff as a function of the aspect ratio y 1 =ðy 1 þ y 2 Þ for the case e 1 ¼ 0:95; e r ¼ 10 when y 1 þ y 2 ¼ 22:58 and y 1 þ y 2 ¼ 308; respectively. These results are in agreement with the data presented in Reference [17]. Zo, Ohm Effective relative permittivity Figure 13.…”

Conductor loss calculation of elliptical, cylindrical coplanar waveguides and coplanar waveguides with finite conductor thickness

“…Hence such waveguides have many potential applications in the design of various passive elements like transitions, baluns, and impedance transformers. As known, the electrical parameters of elliptical and cylindrical coplanar waveguide have been investigated by many researchers [6][7][8][9][10][11][12]. Analyses of these transmission lines by using existing numerical approaches need much more calculation time and computer resources.…”

“…In the literature, CCPW was proposed firstly by Zargari [6] and analyzed using CMT. Then, CPW structure was analyzed as elliptical and cylindrical configurations [8][9][10][11]. Furthermore, the effect of conductor thickness on the characteristic impedance for CCPW has studied in [12].…”