Title :
Picosecond characterization of bent coplanar waveguides
Author :
Alexandrou, Sotiris ; Sobolewski, Roman ; Nakano, Hiroyuki ; Tousley, Bradford C. ; Hsiang, Thomas Y.
Author_Institution :
Rochester Univ., NY, USA
Abstract :
Picosecond electrical pulse propagation on Au coplanar waveguides fabricated on semi-insulating GaAs substrates has been analyzed. Propagation speed and signal distortion between the straight and bent transmission lines of different geometries were measured and compared with the aid of an electrooptic sampling system. The results indicate that the bent coplanar waveguides are capable of linking electronic devices operating in the sub-THz frequency regime. It is also found that smoothing of the bends can considerably improve high-frequency performance of these lines.<>
Keywords :
III-V semiconductors; gallium arsenide; gold; microwave measurement; waveguides; Au-GaAs; GaAs; bent coplanar waveguides; bent transmission lines; electrical pulse propagation; electrooptic sampling system; high-frequency performance; picosecond characterization; propagation speed; semi-insulating substrates; signal distortion; smoothing; sub-THz frequency regime; Coplanar transmission lines; Coplanar waveguides; Distortion measurement; Gallium arsenide; Geometry; Gold; Joining processes; Sampling methods; Transmission line measurements; Velocity measurement;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
