Simulation of an elevated coplanar waveguide using 2-D FDTD

Author

Hofschen, S. ; Wolff, I.

Author_Institution

Dept. of Electr. Eng., Gerhard Mercator Univ., Duisburg, Germany

Volume

6

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

28

Lastpage

30

Abstract

Nonlinear transmission lines (NLTLs) are commonly used together with sampling circuits for millimeter-wave instruments. Recently, the use of an elevated coplanar waveguide (CPW) has been proposed to increase the bandwidth of sampling circuits. A full-wave analysis between 10 and 500 GHz of such an elevated CPW using 2-D FDTD is presented. The influence of the elevation heights on the capacitance and the loss behavior of the transmission line is discussed. The analysis shows that the distributed capacitance of the elevated CPW is four times lower and, the losses are at least divided by two in comparison to a normal CPW at 300 GHz

Keywords

capacitance; coplanar waveguides; current distribution; electromagnetic wave propagation; finite difference time-domain analysis; losses; waveguide theory; 10 to 500 GHz; 2D FDTD; bandwidth; current distribution; distributed capacitance; effective dielectric constant; elevated coplanar waveguide simulation; elevation heights; full-wave analysis; loss behavior; millimeter-wave instruments; nonlinear transmission lines; sampling circuits; Capacitance; Circuit simulation; Coplanar transmission lines; Coplanar waveguides; Distributed parameter circuits; Finite difference methods; Instruments; Millimeter wave circuits; Sampling methods; Time domain analysis;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.482061

Filename

482061