Title :
A measurement-based design equation for the attenuation of MMIC-compatible coplanar waveguides
Author :
Ponchak, George E. ; Matloubian, Mehran ; Katehi, Linda P B
Author_Institution :
Electron. Device Technol. Branch, NASA Lewis Res. Center, Cleveland, OH, USA
fDate :
2/1/1999 12:00:00 AM
Abstract :
Measured attenuation of coplanar waveguide (CPW) transmission lines with narrow strip and slot widths fabricated on GaAs, high-resistivity Si, and InP is used to derive a new closed form equation to calculate line losses. This new equation is shown to be more accurate than previous expressions, yet simple enough to be programmed into a hand-held calculator since it is based on a simple relationship between attenuation and the product of the strip and slot widths. The derived equation is applicable to CPW´s with aspect ratio and metal thicknesses commonly used in monolithic microwave integrated circuits
Keywords :
MMIC; coplanar waveguides; integrated circuit design; integrated circuit measurement; losses; CPW transmission lines; GaAs; InP; MMIC-compatible CPW; Si; attenuation; closed form equation; coplanar waveguide transmission lines; high-resistivity Si; line losses; measurement-based design equation; monolithic microwave integrated circuits; slot width; strip width; Attenuation measurement; Coplanar transmission lines; Coplanar waveguides; Equations; Gallium arsenide; Indium phosphide; Loss measurement; Propagation losses; Strips; Transmission line measurements;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
